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product structure silicon monolithic integrated circuit this product is not designed protection against rad ioactive rays . 1/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 tsz22111 ? 14 ? 001 www.rohm.com datasheet middle power class-d speaker amplifier series 15w+15w class d speaker amplifier for digital input BD5452AMUV general description BD5452AMUV is a class d speaker amplifier designed for flat-panel tvs in particular for space-saving an d low-power consumption, delivers an output power of 15w+15w. this ic employs state-of-the-art bipolar, cmos, and dmos (bcd) process technology. with this technology, the ic can achieve high efficiency. in addition, the ic is packaged in a compact reverse h eat radiation type power package to achieve low power consumption and low heat generation and eliminates necessity of external heat-sink up to a total outpu t power of 30w. this product satisfies both needs for drast ic downsizing, low-profile structures and many functio n, high quality playback of sound system. features this ic has one system of digital audio interface. (i2s format, sdata: 16 / 20 / 24bit, lrclk: 32khz / 44.1khz / 48khz, bclk: 64fs(fixed), mclk: 256fs / 512fs) low supply current at reset mode. the decrease in sound quality because of the chang e of the power supply voltage is prevented with the feedback circuitry of the output. in addition, a lo w noise and low distortion are achieved. eliminate large electrolytic-capacitors for high performance of power supply rejection. power limit function. (at rl =8 ? , 10w /5w /off) available for monaural mode. within the wide range of the power supply voltage, it is possible to operate in a single power supply. (1 0 to 18v) it contributes to miniaturizing, making to the thi n type, and the power saving of the system by high efficien cy and low heat. eliminates pop noise generated when the power supply goes on/off, or when the power supply is suddenly shut off. high quality muting performance is realized by using the soft-muting technology. this ic is a highly reliable design to which it ha s various protection functions. (high temperature protection, under voltage protection, output short protection, output dc voltage protection and clock stop protection, (mclk, bclk, lrclk) small package (vqfn032v5050 package) contributes to reduction of pcb area. applications flat panel tvs (lcd, plasma), home audio, desktop pc, amusement equipments, electronic music equipments, etc. key specifications supply voltage: 10v to 18v speaker output power: 15w+15w (vcc=16v, rl=8 , power limit=off) total harmonic distortion: 0.08 (po=4.5w) crosstalk: 80db(typ.) psrr: 65db(typ.) output noise voltage: 100 vrms(typ.) standby current: 100 a (typ.) operating temperature range: -25 to +85 package(s) w(typ.) x d(typ.) x h(max.) vqfn032v5050 5.00mm x 5.00mm x 1.00mm typical application circuit plmit0 plmit1 bclk lrclk rstx sdata digital audio source -con mute sp ch1 (lch) sp ch2 (rch) error out1p out1n out2p out2n mclk figure 1. typical application circuit vqfn032v5050 downloaded from: http:///
d a t a s h e e t 2/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV pin configuration figure 2. pin configuration pin description pin no. symbol i/o pin no. symbol i/o pin no. symbol i/o pin no. symbol i/o 1 sdata i 9 fila o 17 vccp1 i 25 gndp2 - 2 bclk i 10 gnda - 18 i 26 out2p o 3 lrclk i 11 out1n o 19 plimt0 i 27 o 4 rstx i 12 o 20 plimt1 i 28 gndp2 - 5 mutex i 13 gndp1 - 21 clk_mod i 29 out2n o 6 reg_g o 14 out1p o 22 error o 30 o 7 reg3 o 15 o 23 vccp2 i 31 vcca i 8 filp o 16 gndp1 - 24 i 32 mclk i (top view) downloaded from: http:///
a t a s h e e t 3/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV block diagram 1 2 3 4 5 6 7 8 i/f i 2 s i/f driver fet 1p driver fet 1n 9 10 11 12 13 14 15 16 24 23 22 21 20 19 18 17 32 31 30 29 28 27 26 25 driver fet 2p driver fet 2n under voltage protection over voltage protection clock stop protection output short protection output dc voltage protection high temperature protection 8 over sampling digital filter pwm modulator vccp1 vccp2 vcca reg3 fila filp reg_g i/f sdata plimt1 plimt0 vccp1 out1p fila filp reg3 reg_g out1p gndp1 out1n gnda mutex rstx lrclk bclk mclk out2n out2p vcca out2n out2p vccp2 gndp2 gndp2 clk_mod error vccp2 out1n gndp1 vccp1 figure 3. block diagram downloaded from: http:///
a t a s h e e t 4/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV absolute maximum ratings item symbol limit unit conditions supply voltage vccmax -0.3 to 22 v pin 17,18,23,24,31 1 2 power dissipation pd 3.26 w 3 4.56 w 4 input voltage vin -0.3 to 4.5 v pin 1 to 5, 19 to 21, 32 terminal voltage 1 vpin1 -0.3 to 7.0 v pin 6,8,9 terminal voltage 2 vpin2 -0.3 to 4.5 v pin 7 terminal voltage 3 5 vpin3 -0.3 to 22 v pin 11,12,14,15,26,27,29,30 open-drain terminal voltage verr -0.3 to 22 v pin 22 operating temperature range topr -25 to +85 storage temperature range tstg -55 to +150 maximum junction temperature tjmax +150 1 the voltage that can be applied reference to gnd (pi n 10, 13, 16, 25, 28). 2 do not, however exceed pd and tjmax=150 . 3 74.2mm74.2mm1.6mm, fr4, 4-layer glass epoxy board (top and bottom layer back copper foil size: 20.2mm 2 , 2nd and 3rd layer back copper foil size: 5505mm 2 ) derating in done at 26.1mw/ for operating above ta 25 . there are thermal via on the board. 5 (reference info.) it is confirmed to this terminal to be able to tolerate undershoot within the range o f the following figure 4 with rohm evaluation board. figure 4. undershoot tolerance range recommended operating rating item symbol limit unit conditions supply voltage v cc 10 to 18 v minimum load impedance r l 3.6 ? v cc Q 18v 3.2 ? v cc Q 16v downloaded from: http:///
a t a s h e e t 5/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV electrical characteristics unless otherwise specified ta=25 , vcc=12v, f=1khz, rl=8 ? , rstx=3.3v, mutex=3.3v, plimt0=l, plimt1=l, fs=48kh z, mclk=256fs, output lc filter l=10uh, c=0.1uf item symbol limit unit pin condition min typ max total circuit circuit current (reset mode) icc1 - 0.1 0.2 ma no load, rstx=0v, mutex=0v circuit current (mute mode) icc2 - 15 25 ma no load, rstx=3.3v, mutex=0v circuit current (sampling mode) icc3 - 50 80 ma no load, rstx=3.3v, mutex=3.3v open-drain terminal low level voltage verr - - 0.8 v pin22, i o =0.5ma regulator output voltage 1 vregg 4.7 5.0 5.3 v pin6 regulator output voltage 2 vreg3 3 3.3 3.6 v pin7 high level input voltage vih 2 - 3.3 v pin 1 to 5, 1921, 32 low level input voltage vil 0 - 0.9 v pin 1 to 5, 19 to 21, 32 input current iih 50 66 95 a pin 1 to 5, 19 to 21, 32, vin = 3.3v (input pull-down terminal) speaker output maximum output power 1 po1 - 15 - w vcc=16v, thd+n=10%, plimt0=l, plimt1=l 6 maximum output power 2 po2 10 - - w vcc=16v, thd+n=10%, plimt0=h, plimt1=l 6 maximum output power 3 po3 5 - - w vcc=16v, thd+n=10%, plimt0=h, plimt1=h 6 voltage gain1 gv26 25 26 27 db po=1w, plimt0=l, plimt1=l 6 voltage gain2 gv20 19 20 21 db po=1w, plimt0=h, plimt1=l 6 voltage gain3 gv17 16 17 18 db po=1w, plimt0=h, plimt1=h 6 total harmonic distortion1 thd1 - 0.16 - % p o =1w, bw=20 to 20khz (aes17) plimt0=h , plimt1=l 6 total harmonic distortion2 thd2 - 0.08 - % p o =4.5w, bw=20 to 20khz (aes17) plimt0=h , plimt1=l 6 total harmonic distortion3 thd3 - 0.24 0.3 % p o =1w, bw=20 to 20khz (aes17) vcc=15.7v, plimt0=h , plimt1=l 6 crosstalk ct 60 80 - db p o =1w, bw=ihf-a plimt0=h, plimt1=l 6 psrr (sampling mode) psrr - 65 - db vripple=1vrms, f=1khz 6 plimt0=h, plimt1=l 6 output noise voltage (sampling mode) vno - 100 200 vrms - dbfs, bw=ihf-a 6 plimt0=h, plimt1=l pwm sampling frequency fpwm1 - 256 - khz fs=32khz 6 fpwm2 - 352.8 - khz fs=44.1khz 6 fpwm3 - 384 - khz fs=48khz 6 6 these items show the typical performance of device and de pend on board layout, parts, and power supply. the standard value is in mounting device and parts on su rface of rohms board directly. downloaded from: http:///
a t a s h e e t 6/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV typical performance curves (reference) (1/8) unless otherwise specified ta=25 , vcc=12v, f=1khz, rl=8 ? , rstx=3.3v, mutex=3.3v, plimt0=l, plimt1=l, fs=48kh z, mclk=256fs, output lc filter l=10uh, c=0.1uf 0 10 20 30 40 50 60 70 80 90 100 0 5 10 15 output power [w/ch] efficiency [%] 0.0 0.5 1.0 1.5 2.0 2.5 0 5 10 15 output power [w/ch] icc [a] 0 10 20 30 40 50 60 70 80 8 10 12 14 16 18 20 vcc [v] icc [ma] 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 8 10 12 14 16 18 20 vcc [v] icc [ma] figure 5. vcc vs. icc figure 6. vcc vs. icc figure 7. output power vs. efficiency plimt0=l, plimt1=l figure 8. output power vs. icc plimt0=l, plimt1=l rstx=mutex=l rl=8 ? no signal mutex=h rstx=h rl=8 ? no signal mutex=l rl=8 rl=6 rl=4 rl=8 rl=6 rl=4 downloaded from: http:///
a t a s h e e t 7/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV typical performance curves (reference) (2/8) unless otherwise specified ta=25 , vcc=12v, f=1khz, rl=8 ? , rstx=3.3v, mutex=3.3v, plimt0=l, plimt1=l, fs=48kh z, mclk=256fs, output lc filter l=10uh, c=0.1uf dotted line means internal dissipation is over pac kage power. 5v/div vcc=12v rl=8 ? po=1w fin=500hz mutex(5pin) 2v/div speaker output 5ms/div figure 9. waveform of soft start 5v/div vcc=12v rl=8 ? po=1w fin=500hz mutex(5pin) 2v/div speaker output 5ms/div figure 10. waveform of soft mute 0 5 10 15 20 8 10 12 14 16 18 20 vcc [v] output power [w/ch] figure 11. vcc vs. output power plimt0=l, plimt1=l figure 12. output power vs. icc plimt0=l, plimt1=l thd+n=10% thd+n=1% rl=8 0 0.5 1 1.5 2 2.5 3 0 5 10 15 20 output power [w/ch] icc [a] vcc=10v vcc=12v vcc=16v vcc=18v rl=8 downloaded from: http:///
a t a s h e e t 8/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV typical performance curves (reference) (3/8) unless otherwise specified ta=25 , vcc=12v, f=1khz, rl=8 ? , rstx=3.3v, mutex=3.3v, plimt0=l, plimt1=l, fs=48kh z, mclk=256fs, output lc filter l=10uh, c=0.1uf dotted line means internal dissipation is over pac kage power. dotted line means internal dissipation is over pac kage power. figure 13. vcc vs. output power plimt0=l, plimt1=l figure 14. output power vs. icc plimt0=l, plimt1=l figure 15. vcc vs. output power plimt0=l, plimt1=l figure 16. output power vs. icc plimt0=l, plimt1=l 0 5 10 15 20 8 10 12 14 16 18 20 vcc [v] output power [w/ch] thd+n=10% thd+n=1% rl=6 0 5 10 15 20 8 10 12 14 16 18 20 vcc [v] output power [w/ch] thd+n=10% thd+n=1% rl=4 0 0.5 1 1.5 2 2.5 3 0 5 10 15 output power [w/ch] icc [a] vcc=10v vcc=12v rl=6 vcc=16v vcc=18v 0 0.5 1 1.5 2 2.5 3 0 2 4 6 8 10 output power [w/ch] icc [a] vcc=10v vcc=12v rl=4 vcc=16v vcc=18v downloaded from: http:///
a t a s h e e t 9/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV typical performance curves (reference) (4/8) unless otherwise specified ta=25 , vcc=12v, f=1khz, rl=8 ? , rstx=3.3v, mutex=3.3v, plimt0=l, plimt1=l, fs=48kh z, mclk=256fs, output lc filter l=10uh, c=0.1uf -140 -120 -100 -80 -60 -40 -20 0 10 100 1k 10k 100k freq [hz] noise fft [dbv] figure 17. fft of output noise voltage out1 out2 no signal b.w. none rl=8 10 15 20 25 30 10 100 1k 10k 100k freq [hz] voltage gain [db] figure 18. freq vs. voltage gain out1 out2 po=1w b.w. none rl=8 0.01 0.1 1 10 100 0.01 0.1 1 10 po [w] thd+n [%] figure 19. po vs. thd+n b.w. 20 to 20khz aes17 rl=8 f=1khz f=100hz f=10khz 0.01 0.1 1 10 10 100 1k 10k 100k freq [hz] thd+n [%] figure 20. freq vs. thd+n b.w. 20 to 20khz aes17 rl=8 out1 out2 downloaded from: http:///
a t a s h e e t 10/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV typical performance curves (reference) (5/8) unless otherwise specified ta=25 , vcc=12v, f=1khz, rl=8 ? , rstx=3.3v, mutex=3.3v, plimt0=l, plimt1=l, fs=48kh z, mclk=256fs, output lc filter l=10uh, c=0.1uf -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 0.01 0.1 1 10 po [w] crosstalk [db] figure 21. po vs. crosstalk rl=8 out2 to out1 out1 to out2 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1k 10k 100k freq [hz] crosstalk [db] figure 22. freq vs. crosstalk out2 to out1 out1 to out2 rl=8 -140 -120 -100 -80 -60 -40 -20 0 10 100 1k 10k 100k freq [hz] noise fft [dbv] figure 23. fft of output noise voltage out1 out2 no signal b.w. none rl=6 10 15 20 25 30 10 100 1k 10k 100k freq [hz] voltage gain [db] figure 24. freq vs. voltage gain out1 out2 po=1w b.w. none rl=6 downloaded from: http:///
a t a s h e e t 11/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV typical performance curves (reference) (6/8) unless otherwise specified ta=25 , vcc=12v, f=1khz, rl=8 ? , rstx=3.3v, mutex=3.3v, plimt0=l, plimt1=l, fs=48kh z, mclk=256fs, output lc filter l=10uh, c=0.1uf 0.01 0.1 1 10 100 0.01 0.1 1 10 100 po [w] thd+n [%] figure 25. po vs. thd+n b.w. 20 to 20khz aes17 rl=6 f=1khz f=100hz f=10khz 0.01 0.1 1 10 10 100 1k 10k 100k freq [hz] thd+n [%] figure 26. freq vs. thd+n b.w. 20 to 20khz aes17 rl=6 out1 out2 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 0.01 0.1 1 10 100 po [w] crosstalk [db] figure 27. po vs. crosstalk rl=6 out2 to out1 out1 to out2 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1k 10k 100k freq [hz] crosstalk [db] figure 28. freq vs. crosstalk out2 to out1 out1 to out2 rl=6 downloaded from: http:///
a t a s h e e t 12/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV typical performance curves (reference) (7/8) unless otherwise specified ta=25 , vcc=12v, f=1khz, rl=8 ? , rstx=3.3v, mutex=3.3v, plimt0=l, plimt1=l, fs=48kh z, mclk=256fs, output lc filter l=10uh, c=0.1uf -140 -120 -100 -80 -60 -40 -20 0 10 100 1k 10k 100k freq [hz] noise fft [dbv] figure 29. fft of output noise voltage out1 out2 no signal b.w. none rl=4 10 15 20 25 30 10 100 1k 10k 100k freq [hz] voltage gain [db] figure 30. freq vs. voltage gain out1 out2 po=1w b.w. none rl=4 0.01 0.1 1 10 100 0.01 0.1 1 10 100 po [w] thd+n [%] figure 31. po vs. thd+n b.w. 20 to 20khz aes17 rl=4 f=1khz f=100hz f=10khz 0.01 0.1 1 10 10 100 1k 10k 100k freq [hz] thd+n [%] figure 32. freq vs. thd+n b.w. 20 to 20khz aes17 rl=4 out1 out2 downloaded from: http:///

a t a s h e e t 13/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV typical performance curves (reference) (8/8) unless otherwise specified ta=25 , vcc=12v, f=1khz, rl=8 ? , rstx=3.3v, mutex=3.3v, plimt0=l, plimt1=l, fs=48kh z, mclk=256fs, output lc filter l=10uh, c=0.1uf -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 0.01 0.1 1 10 100 po [w] crosstalk [db] figure 33. po vs. crosstalk rl=4 out2 to out1 out1 to out2 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1k 10k 100k freq [hz] crosstalk [db] figure 34. freq vs. crosstalk out2 to out1 out1 to out2 rl=4 figure 36. audio characteristics measurement environm ent 0 5 10 15 20 8 10 12 14 16 18 20 vcc [v] maximum output power [w/ch] figure 35. vcc vs. maximum output power 26db 17db b.w. 20 to 20khz aes17 rl=8 f=1khz thd+n=1% 20db downloaded from: http:///
a t a s h e e t 14/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV about digital audio input 1) input digital audio signal sampling frequency (f s) explanation pwm sampling frequency, soft-start, soft-mute time, and the detection time of the dc voltage protectio n in the speaker depends on sampling frequency (fs) of the digital audio input. sampling frequency of the digital audio input (fs) pwm sampling frequency (fpwm) soft-start / soft-mute time dc voltage protection in the speaker detection time 32khz 256khz 32msec. 1.02sec 44.1khz 352.8khz 23msec. 0.74sec 48khz 384khz 21.5msec. 0.68sec 2) format of digital audio input mclk: it is system clock input signal. it will input lrclk, bclk, sdata that synchronizes wi th this clock that are 256 times of sampling frequency (256fs) or 512 times of sampling freque ncy (512fs). lrclk: it is l/r clock input signal. it corresponds to 32khz/44.1khz/48khz with that c lock(fs) which are same to the sampling frequency (fs). the data of a left channel and a right channel for one sample is input to this section bclk: it is bit clock input signal. it is used for the latch of data in every one bit by sampling frequencys 64 times sampling frequency (64fs). sdata: it is data input signal. it is amplitude data. the data length is differen t according to the resolution of the input digital audio data. it corresponds to 16/ 20/ 24 bit. 3) i2s data format the low section of lrclk becomes lch, the high secti on of lrclk becomes rch. after changing lrclk, second bit becomes msb. figure 37. i2s data format 64fs, 24bit data figure 38. i2s data format 64fs, 20bit data figure 39 . i2s data format 64fs, 16bit data downloaded from: http:///
a t a s h e e t 15/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 4) audio interface format and timing recommended timing and operating conditions(mclk, bcl k, lrclk and sdata) limit no. parameter symbol mclk=256fs mclk=512fs unit min. max. min. max. 1 mclk frequency fmclk 8.192 12.288 16.384 24.576 mhz 2 lrclk frequency flrclk 32 48 32 48 khz 3 bclk frequency fbclk 2.048 3.072 2.048 3.072 mhz 4 setup time, lrclk 7 tsu;lr 20 20 ns 5 hold time, lrclk 7 thd;lr 20 20 ns 6 setup time, sdata tsu;sd 20 20 ns 7 hold time, sdata thd;sd 20 20 ns 8 mclk, dyty dmclk 40 60 40 60 % 9 lrclk, dyty dlrclk 40 60 40 60 % 10 bclk, duty dbclk 40 60 40 60 % 7 this regulation is to keep rising edge of lrck and r ising edge of bclk from overlapping. figure 40. clock timing figure 41. audio interface timing mclk 1/ lrclk 1/flrclk bclk 1/fbclk / mclk lrclk bclk sdata thd;lr tsu;lr thd ; sd ; tsu ; sd ; downloaded from: http:///
a t a s h e e t 16/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV timing chart 1) power supply start-up sequence vccp1 (17, 18pin) vccp2 (23, 24pin) vcca (31pin) reg3 (7pin) reg_g (6pin) reg_g reg_3 t t t t t mutex (5pin) rstx (4pin) t mclk (32pin) sdata(1pin) bclk(2pin) lrclk(3pin) filp fila (9pin) speaker output power up vcca, vccp1, vccp2 simultaneously. digital audio data communication. after rstx=lh wait more than 20msec to mutex=lh set rstx to high after power up. soft-start 21.5msec(fs=48khz) fila filp (8pin) with vcc>10v, waiting time unnecessary. with vcc>10v, there are no problem sending digital audio data at rstx=l. more than 20msec figure 42. power supply start-up sequence downloaded from: http:///
a t a s h e e t 17/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 2) power supply shut-down sequence with vcc10v, there are no problem sending digital audio data even by rstx=l speaker output reg_g reg_3 t t t t t t filp set mutex to low. after stopping speaker output, turn off the transmission of digital audio signal. set rstx to low power down vcca, vccp1, vccp2, simultaneously. soft-mute 21.5msec(fs=48khz) fila vccp1 (17, 18pin) vccp2 (23, 24pin) vcca (31pin) reg3 (7pin) reg_g (6pin) mutex (5pin) rstx (4pin) mclk (32pin) sdata(1pin) bclk(2pin) lrclk(3pin) fila (9pin) filp (8pin) figure 43. power supply shut-down sequence downloaded from: http:///
a t a s h e e t 18/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 3) about changing audio signal the output pwm frequency of BD5452AMUV becomes the fr equency of eight times of the sampling frequency fs . therefore output pwm frequency becomes unstable wh en mclk seems to become unstable at the time of chan nel switching at input switching and so on, too. it is possible that the lc resonance is occurred and a s hort protections function worked. if you can expect mclk unstable period, we suggest following process. 1. mute audiodata from scalar ic.(a) 2. after muting audiodata from scalar ic (b), set mut ex=l(c). 3. after mclk go to stable state, set mutex=h(d). 4. release mute audiodara from scalar ic(e). mclk audiodata mutex outx a b c d e pwm stop mclk unstable period no matter of order d and e figure 44. action at mclk unstable1 figure 45. action at mclk unstable2 downloaded from: http:///
a t a s h e e t 19/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV about the protection function protection function detecting & releasing condition pwm error output output output short protection detecting condition detecting current = 10a (typ.) hiz_low l (latch) (latch) dc voltage protection in the speaker detecting condition at speaker output, impressed dc voltage over 0.68sec (fs=48khz) over 3.5vbetween (power limit off), 1.75v(power limit 10w) or 1.225v(power limit 5w) hiz_low (latch) l (latch) high temperature protection detecting condition chip temperature to be above 150 (typ.) hiz_low l releasing condition chip temperature to be below 120 (typ.) normal operation under voltage protection detecting condition power supply voltage to be below 8v (typ.) hiz_low h releasing condition power supply voltage to be above 9v (typ.) normal operation over voltage protection detecting condition power supply voltage to be above 20v(typ.) hiz_low h releasing condition power supply voltage to be below 19.5v(typ.) normal operation clock stop protection detecting condition no change to mclk more than 1usec (typ.) or hiz_low h no change to bclk more than 1usec (typ.) or no change to lrclk more than 21usec (at fs=48khz.). releasing condition normal input to mclk, bclk and lrclk. normal operation * the error pin is nch open-drain output. * once an ic is latched, the circuit is not released autom atically even after an abnormal status is removed. the following procedures or is available for recovery. after turning mutex terminal to low(holding time to low = 10msec(min.)) turn back to high again. restore power supply after dropping to power supply vo ltage vcc 3v(10msec (min.) holding) which internal power on re set circuit activates. downloaded from: http:///
a t a s h e e t 20/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 1) output short protection short to the power supply this ic has the pwm output short protection circui t that stops the pwm output when the pwm output is short-circuited to the power supply due to abnorma lity. detecting condition - it will detect when mutex pi n is set high and the current that flows in the pwm output pin becomes 10a(typ.) or more. the pwm output ins tantaneously enters the state of hiz-low if detected, and ic does the latch. releasing method - after turning mutex terminal to low(holding time to low = 10msec(min.)) turn back to high again. restore power supply after dropping to power supply voltage vcc 3v(10msec (min.) holding) which internal power on reset circuit a ctivates. figure 46. sequence of the output short protection error (22pin) t t out1p(14,15pin) out1n(11,12pin) out2p(26,27pin) out2n(29,30pin) 10a(typ.) t mutex(5pin) sec(typ.) t short to vcc release from short to vcc pwm out : ic latches with hiz-low. released from latc h state. over current latch release 10msec(min.) downloaded from: http:///
a t a s h e e t 21/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 2) output short protection short to gnd this ic has the pwm output short protection circuit that stops the pwm output when the pwm output is short-circuited to gnd due to abnormality. detecting condition - it will detect when mutex p in is set high and the current that flows in the pwm output terminal becomes 10a(typ.) or more. t he pwm output instantaneously enters the state of hiz-low if detected, and ic does the latch. releasing method - after turning mutex terminal to low(holding time to low = 10msec(min.)) turn back to high again. restore power supply after dropping to power supply voltage vcc 3v (10msec (min.) holding) which internal power on res et circuit activates. sec(typ.) t t t 10a(typ.) t short to gnd release from short to gnd pwm out : ic latches with hiz-low. released from latch state. over current latch release 10msec(min.) error (22pin) out1p(14,15pin) out1n(11,12pin) out2p(26,27pin) out2n(29,30pin) mutex(5pin) figure 47. sequence of the output short protection downloaded from: http:///
a t a s h e e t 22/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 3) dc voltage protection in the speaker1 when the dc voltage in the speaker is impressed du e to abnormality, this ic has the protection circui t where the speaker is defended from destruction. detecting condition - it will detect when mutex p in is set high and speaker output is more than 3.5v(typ, power limit off setting), 1.75v(typ, power limit 10w setting), 1.225v(typ, power limit 5w setting), 0.68sec(fs=4 8khz) or above. once detected, the pwm output instantaneously e nters the state of hiz-low, and ic does the latch. releasing method - after turning mutex terminal to low(holding time to low = 10msec(min.)) turn back to high again. restore power supply after dropping to power supply voltage vcc 3v (10msec (min.) holding) which internal power on res et circuit activates. power limit off settings figure 48. sequence of dc voltage protection in the speaker1 downloaded from: http:///
a t a s h e e t 23/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 4) dc voltage protection in the speaker2 about dc voltage protection at pwm output duty=0% o r 100% when the dc voltage in the speaker is impressed du e to abnormality, this ic has the protection circui t where the speaker is defended from destruction. detecting condition - it will detect when mutex p in is set high or low and pwm output duty=0% or 100% , 43msec(fs=48khz) or above. once detected , the pwm output instantaneously enters the state of hiz-low, an d ic does the latch. releasing method - after turning mutex terminal to low(holding time to low = 10msec(min.)) turn back to high again. restore power supply after dropping to power supply voltage vcc 3v (10msec (min.) holding) which internal power on res et circuit activates. figure 49. sequence of dc voltage protection in the speaker2 downloaded from: http:///
a t a s h e e t 24/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 5) high temperature protection this ic has the high temperature protection circui t that prevents thermal reckless driving under an a bnormal state for the temperature of the chip to exceed tjmax=150 . detecting condition - it will detect when mutex p in is set high and the temperature of the chip beco mes 150 (typ.) or more. speaker output turns mute immediately , when high temperature protection is detected. releasing condition - it will release when mutex pin is set high and the temperature of the chip bec omes 120 (typ.) or less. the speaker output is outputted thro ugh a soft-start when released. (auto recovery) temperature of ic chip junction() speaker output hi-z low 150 120 3.3v error (22pin) t t t t soft-start 21.5msec(fs=48khz) out1p(14,15pin) out1n(11,12pin) out2p(26,27pin) out2n(29,30pin) figure 50. sequence of high temperature protection downloaded from: http:///
a t a s h e e t 25/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 6) under voltage protection this ic has the under voltage protection circuit t hat make speaker output mute once detecting extreme drop of the power supply voltage. detecting condition - it will detect when mutex p in is set high and the power supply voltage becomes lower than 8v(typ.).speaker output turn mute immedi ately, when under voltage protection is detected. releasing condition - it will release when mutex pin is set high and the power supply voltage becomes more than 9v(typ.). the speaker output is outputted through a soft-start when released. (auto recovery) figure 51. sequence of under voltage protection downloaded from: http:///
a t a s h e e t 26/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 7) over voltage protection this ic has the under voltage protection circuit t hat make speaker output mute once detecting extreme drop of the power supply voltage. detecting condition - it will detect when mutex p in is set high and the power supply voltage becomes more than 20v(typ.).speaker output turn mute immedi ately, when over voltage protection is detected. releasing condition - it will release when mutex pin is set high and the power supply voltage become s lower than 19.5v(typ.). the speaker output is out putted through a soft-start when released. (auto recovery) error (22pin) 19.5v 20v 3.3v t t t t speaker output hiz-low soft-start (auto recovery) 21.5msec(fs=48khz) vccp1 (17, 18pin) vccp2 (23, 24pin) vcca (31pin) out1p(14,15pin) out1n(11,12pin) out2p(26,27pin) out2n(29,30pin) figure 52. sequence of over voltage protection downloaded from: http:///
a t a s h e e t 27/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 8) clock stop protection(mclk) this ic has the clock stop protection circuit that make the speaker output mute when the mclk signal o f the digital audio input stops. detecting condition - it will detect when mutex p in is set high and the mclk signal stops for about 1usec or more. speaker output turn mute immediate ly, clock stop protection is detected. releasing condition - it will release when mutex pin is set high and the mclk signal returns to the normal clock operation. the speaker output is o utputted through a soft-start when released. (auto recovery) figure 53. sequence of clock stop protection(mclk) downloaded from: http:///
a t a s h e e t 28/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 9) clock stop protection(bclk) this ic has the clock stop protection circuit that make the speaker output mute when the bclk signal o f the digital audio input stops. detecting condition - it will detect when mutex p in is set high and the bclk signal stops for about 1usec or more. speaker output turns mute immediat ely, when clock stop protection is detected. releasing condition - it will release when mutex pin is set high and the bclk signal returns to the normal clock operation. the speaker output is o utputted through a soft-start when released. (auto recovery) figure 54. sequence of clock stop protection(bclk) downloaded from: http:///
a t a s h e e t 29/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 10) clock stop protection(lrclk) this ic has the clock stop protection circuit that make the speaker output mute when the lrclk signal of the digital audio input stops. detecting condition - it will detect when mutex p in is set high and the lrclk signal stops for about 21usec(at fs=48khz) or more. speaker output turn mute immediately, when clock stop protection is detected. releasing condition - it will release when mutex pin is set high and the lrclk signal returns to the normal clock operation. the speaker output is o utputted through a soft-start when released. (auto recovery) lrclk (3pin) error (22pin) clock stop clock recover hiz-low protection start about 21sec(fs=48khz) clock stop 3.3v t t t t out1p(14,15pin) out1n(11,12pin) out2p(26,27pin) out2n(29,30pin) speaker output soft-start (auto recovery) 21.5msec(fs=48khz) figure 55. sequence of clock stop protection(lrclk) downloaded from: http:///
a t a s h e e t 30/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV application circuit example1 stereo btl output, rl=8 ? , vcc=10v to 16v 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 bom list1 stereo btl output, r l =8 , vcc=10v to 16v parts parts no. value company product no. rated voltage tolerance size ic u1 rohm BD5452AMUV 5.0mmx5.0mm inductor l11, l14, l26, l30 10 h toko b1047as-100m - (20%) 7.6mm7.6mm resistor r22 100k ? rohm mcr03ezpj104 1/10w j(5%) 1.6mm0.8mm capacitor c17, c23, c31 10uf murata grm31cb11e106ka75l 25v b(10% 3.2mm1.6mm c6, c7 c8, c9 0.1uf grm188b11a104ka92d 10v b(10% 1.6mm0.8mm c11, c14, c26, c30 0.1uf grm188b11e104ka01d 25v b(10% 1.6mm0.8mm as return of current regenerated by back emf of outpu t coil happens, take steps such as putting capacito r between power supply and gnd as an electric pathway for the regenerated current. be sure that there is no prob lem with each property such as emptied capacity at lower temperat ure regarding electrolytic capacitor to decide capa city value. if the connected power supply does not have sufficient cur rent absorption capacity, regenerative current will cause the voltage on the power supply line to rise, which com bined with the product and its peripheral circuitry may exceed the absolute maximum ratings. it is recommended to impl ement a physical safety measure such as the inserti on of a voltage clamp diode between the power supply and gn d pins. figure 56. application circuit1 downloaded from: http:///
a t a s h e e t 31/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV application circuit example 2 monaural btl output, rl=8 ? , vcc=10v to 16v bom list2 monaural btl output, r l =8 , vcc=10v to 16v parts parts no. value company product no. rated voltage tolerance size ic u1 rohm BD5452AMUV 5.0mmx5.0mm inductor l11, l14 10 h toko b1047as-100m - (20%) 7.6mm7.6mm resistor r22 100k ? rohm mcr03ezpj104 1/10w j(5%) 1.6mm0.8mm capacitor c17, c31 10uf murata grm31cb11e106ka75l 25v b(10% 3.2mm1.6mm c6, c7 c8, c9 0.1uf grm188b11a104ka92d 10v b(10% 1.6mm0.8mm c11, c14 0.1uf grm188b11e104ka01d 25v b(10% 1.6mm0.8mm as return of current regenerated by back emf of outpu t coil happens, take steps such as putting capacito r between power supply and gnd as an electric pathway for the regenerated current. be sure that there is no prob lem with each property such as emptied capacity at lower temperat ure regarding electrolytic capacitor to decide capa city value. if the connected power supply does not have sufficient cur rent absorption capacity, regenerative current will cause the voltage on the power supply line to rise, which com bined with the product and its peripheral circuitry may exceed the absolute maximum ratings. it is recommended to impl ement a physical safety measure such as the inserti on of a voltage clamp diode between the power supply and gn d pins. figure 57. application circuit 2 downloaded from: http:///
a t a s h e e t 32/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 application circuit example 3 stereo btl output, r l =8 , vcc=16v to 18v to prevent going over absolute maximum rating by th e leap out of power supply and the linking of pwm o utput wave form, please provide countermeasure shown below diagram ( dot-line) when using at vcc 16v. bom list 3 stereo btl output, r l =8 , vcc=16v to 18v parts parts no. value company product no. rated tolerance size ic u1 rohm BD5452AMUV 5.0mmx5.0mm inductor l11, l14, l26, l30 10 h toko b1047as-100m - (20%) 7.6mm7.6mm resistor r22 100k ? rohm mcr03ezpj104 1/10w j(5%) 1.6mm0.8mm r11, r14, r26, r30 6.8 ? mcr03ezpfl6r80 1/10w f(5%) 1.6mm0.8mm capacitor c17, c23, c31 10uf murata grm31cb11e106ka75l 25v b(10% 3.2mm1.6mm c6, c7 c8, c9 0.1uf grm188b11a104ka92d 10v b(10% 1.6mm0.8mm c11, c14, c26, c30 0.1uf grm188b11a104ka01d 25v b(10% 1.6mm0.8mm c11b, c14b, c26b, c30b 680pf grm188b11e681ka01 25v b(10% 1.6mm0.8mm electrolytic capacitor c17b 220 f panasonic eca1emh221 25v 20% 8mm11.5mm as return of current regenerated by back emf of outpu t coil happens, take steps such as putting capacito r between power supply and gnd as an electric pathway for the regenerated current. be sure that there is no prob lem with each property such as emptied capacity at lower temperat ure regarding electrolytic capacitor to decide capa city value. if the connected power supply does not have sufficient cur rent absorption capacity, regenerative current will cause the voltage on the power supply line to rise, which com bined with the product and its peripheral circuitry may exceed the absolute maximum ratings. it is recommended to impl ement a physical safety measure such as the inserti on of a voltage clamp diode between the power supply and gn d pins. figure 58. application circuit example 3 downloaded from: http:///
a t a s h e e t 33/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV application circuit example 4 monaural btl output, r l =8 , vcc=16v to 18v to prevent going over absolute maximum rating by th e leap out of power supply and the linking of pwm o utput wave form, please provide countermeasure shown below diagram ( red dot-line) when using at vcc 16v. bom list 4 monaural btl output, r l =8 , vcc=16v to 18v parts parts no. value company product no. rated tolerance size ic u1 rohm BD5452AMUV 5.0mmx5.0mm inductor l11, l14 10 h toko b1047as-100m - (20%) 7.6mm7.6mm resistor r22 100k ? rohm mcr03ezpj104 1/10w j(5%) 1.6mm0.8mm r11, r14 6.8 ? mcr03ezpfl6r80 1/10w f(5%) 1.6mm0.8mm capacitor c17, c31 10uf murata grm31cb11e106ka75l 25v b(10% 3.2mm1.6mm c6, c7 c8, c9 0.1uf grm188b11a104ka92d 10v b(10% 1.6mm0.8mm c11, c14 0.1uf grm188b11a104ka01d 25v b(10% 1.6mm0.8mm c11b, c14b 680pf grm188b11e681ka01 25v b(10% 1.6mm0.8mm electrolytic capacitor c17b 220 f panasonic eca1emh221 25v 20% 8mm11.5mm as return of current regenerated by back emf of outpu t coil happens, take steps such as putting capacito r between power supply and gnd as an electric p athway for the regenerated current. be sure that the re is no problem with each property such as emptied capacity at lower temperat ure regarding electrolytic capacitor to decide capa city value. if the connected power supply does not have sufficient cur rent absorption capacity, regenerative current will caus e the voltage on the power supply line to rise, which combined wi th the product and its peripheral circuitry may exc eed the absolute maximum ratings. it is recommended to implement a p hysical safety measur e such as the insertion of a voltage clamp diode between the power supply and gnd pins. sp 1ch c14 l14 c11 l11 10h 10h 0.1f 0.1f (8) gndp1 c14b r14 6.8 r11 6.8 c11b 880pf 220f c17b vcc: 16v18v 880pf 1 2 3 4 5 6 7 8 i/f i 2 s i/f driver fet 1p driver fet 1n 9 10 11 12 13 14 15 16 24 23 22 21 20 19 18 17 32 31 30 29 28 27 26 25 driver fet 2p driver fet 2n 8 over sampling digital filter pwm modulator vccp1 gndp1 gndp2 vccp2 error 100k r22 reg3 vcca c31 10f gnda gnda lrclk bclk sdata mclk reg3 0.1f c8 fila filp reg_g 0.1f c7 0.1f c6 gndp2 plimt1 plimt0 clk_mod c17 10f gndp1 rstx mutex i/f 0.1f c9 out1n out1p 3.3v vss 3.3v vss 3.3v vss under voltage protection over voltage protection clock stop protection output short protection output dc voltage protection high temperature protection figure 59. application circuit example 4 downloaded from: http:///
a t a s h e e t 34/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV about circuit board layout be careful of the following order of priority, and design a circuit board layout. c13 ? c27 ? c31(10uf) put shortest compared with vcc and gnd. c6 ? c7 ? c8 ? c9(0.1uf) put shortest compared with vcc and gnd. the thermal pattern on the back connected with the gnd. each gnd line connected by one point without common impedance. each power supply and each gnd are divided gnd pattern of both side connected with the a lot o f via electric contacts to lower the impedance of gn d. gnd area of the heat radiation area widen to improv e the heat radiation ability. reference rohm designed 4 layer board figure 60. rohm designed 4layer board downloaded from: http:///
a t a s h e e t 35/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV reference rohm designed 4 layer board silkscreen rohm designed 4 layer board copper layer figure 61. top layer silk screen (top view) figure 62. bottom layer silk screen (top view) figure 63. top copper layer (top view) figure 64. mid copper layer1 (top view) figure 66. bottom copper layer (top view) figure 65. mid copper layer2 (top view) downloaded from: http:///
! a t a s h e e t 36/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV about the two pieces use of BD5452AMUV be careful of the following point, when you have two BD5452AMUVs used at the same time. it is charged with electricity to gnd of lc-filter for the sw element removal. when you have two bd5452 amuvs used at the same time and pwm output synchronized , there i s common impedance in gnd of filter, the gnd electri c potential is raised, and it becomes the aggravation cause of the noise. the gnd of filter is to short in one point when you use two BD5452AMUVs at the same time. there is no mechanism of the phase control in BD5452AMUV. how to select an application parts 1) output lc filter circuit an output filter is required to eliminate radio-fre quency components exceeding the audio-frequency reg ion supplied to a load (speaker). because this ic uses sampling clock frequencies from 256khz(fs=32khz) to 384khz(f s=48khz) in the output pwm signals, the high-frequency comp onents must be appropriately removed. this section takes an example of an lc type lpf shown below, in which coi l l and capacitor c compose a differential filter w ith an attenuation property of -12db/oct. a large part of s witching currents flow to capacitor c, and only a s mall part of the currents flow to speaker rl. this filter reduces u nwanted emission this way. in addition, coil l and capacitor cg compose a filter against in-phase components, redu cing unwanted emission further. r l c l c l 11,12 or 29,30 14,15 or 26,27 figure 69. output lc filter figure 67. output lc filter figure 68. circuit at the time of the two use downloaded from: http:///
" a t a s h e e t 37/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV following presents output lc filter constants with typical load impedances. r l l c 4 ? 10 h 0.47 f 6 ? 10 h 0.15 f 8 ? 10 h 0.1 f use coils with a low direct-current resistance and with a sufficient margin of allowable currents. a h igh direct-current resistance causes power losses. in addition, select a closed magnetic circuit type pro duct in normal cases to prevent unwanted emission. use capacitors with a low equivalent series resist ance, and good impedance characteristics at high fr equency ranges (100khz or higher). also, select an item with suff icient withstand voltage because flowing massive am ount of high-frequency currents is expected. 2) the value of the lc filter circuit computed equa tion the output lc filter circuit of BD5452AMUV is as it i s shown in figure 70. the lc filter circuit of figu re 70 is thought to substitute it like figure 71 on the occasion of the computation of the value of the lc filter circu it. figure 70. output lc filter 1 figure 71. output lc filter 2 the transfer function h(s) of the lc filter circui t of figure 71 becomes the following. the and q become the followings here. therefore, l and c become the followings. the rl and l should be made known, and fcl is set up, and c is decided. 2 2 2 2 q 1 1 1 )( + + = + + = s s lc s cr s lc sh lc 1 = 2 l c r 2 1 = l c r=q l q f4 r = c 1 =l cl l 2 l cl r f q = r q =c cl f2= lc 2 1 = f cl downloaded from: http:///
# a t a s h e e t 38/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 3) the settlement of the l value of the coil a standard for selection of the l value of a coil to use is to take the following back anti-matter in to consideration except for the factor such as a low castigation, miniaturization, pale pattern. it is b eing made l=10uh with BD5452AMUV in consideration of a balan ce of the total. when l value was made small. (1) circuit electric currents increase without a s ignal. and, efficiency in the low output gets bad. (2) direct current resistance value is restrained small when the coil of other l value and size are m ade the same. therefore, maximum output is easy to take out. a nd, it can be used in the low power supply voltage because dc electric current (allowable electric current) va lue can be taken greatly. when l value was made large. (1) circuit electric current is restrained low wit hout a signal. efficiency in the low output improve s. (2) direct current resistance value grows big when the coil of other l value and size are made the sa me. therefore, maximum output is hard to take out. and, becaus e it becomes small, use becomes difficult the dc electric current (allowable electric current) value in the low power supply voltage, too. 4) the settlement of the f cl as for the settlement of the fixed number of the l c filter circuit, it is taken into consideration ab out two points of the following, and set up. the pwm sampling frequency fpwm (=8fs) of bd5452amu v is set up in 384khz (@fs=48khz). it is set up with fc < fpwm to restrain career fre quency omission after the lc filter circuit. when fc is lowered too much, the voltage profit of the voice obi stage (especially, the neighborhood o f 20khz) declines in the speaker output frequency character of the difference movement mode. and, the speaker output frequency character of the difference movement mode becomes the following. rl=8 ? rl=6 ? rl=4 ? l[uh] c[uf] fc[khz] q l[uh] c[uf] fc[khz] q l[uh] c[uf] fc[khz] q 10 0.1 75.32 0.40 10 0.1 51.01 0.30 10 0.1 32.19 0.20 0.15 80.85 0.49 0.15 54.76 0.37 0.15 33.35 0.24 0.22 86.79 0.59 0.22 56.73 0.44 0.22 34.55 0.30 0.33 89.92 0.73 0.33 63.1 0.54 0.33 35.8 0.36 0.47 86.79 0.87 0.47 66.68 0.65 0.47 38.37 0.43 15 0.1 46.99 0.33 15 0.1 33.11 0.24 15 0.1 21.68 0.16 0.15 49.66 0.40 0.15 34.36 0.30 0.15 22.08 0.20 0.22 53.46 0.48 0.22 35.65 0.36 0.22 22.49 0.24 0.33 57.54 0.59 0.33 38.37 0.44 0.33 22.91 0.30 0.47 59.7 0.71 0.47 41.3 0.53 0.47 23.77 0.35 22 0.1 30.76 0.27 22 0.1 22.49 0.20 22 0.1 14.72 0.13 0.15 31.92 0.33 0.15 22.91 0.25 0.15 14.72 0.17 0.22 33.73 0.40 0.22 23.77 0.30 0.22 15 0.20 0.33 36.31 0.49 0.33 24.66 0.37 0.33 15.28 0.24 0.47 39.08 0.58 0.47 26.06 0.44 0.47 15.56 0.29 downloaded from: http:///
$ a t a s h e e t 39/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 5) about the emi countermeasure it can be confirmed with chip common mode choke co il( dly5atn401 ) manufactured by murata manufacturi ng, chip inductor lcc3225t2r2mr manufactured by taiyoy uden as a part emi countermeasure except for the ou tput lc filter recommended with p.30/46 p.33/46. application circuit example5 stereo btl output, r l =8 , vcc=10v 16v figure 72. application circuit example5 bom list 5 stereo btl output, r l =8 , vcc=10v 16v parts parts no. value company product no. rated voltage tolerance size ic u1 rohm BD5452AMUV 5.0mmx5.0mm inductor l11, l14, l26, l30 2.2 h taiyo yuden lcc3225t2r2mr 1.5a (20%) 3.2mm2.5mm resistor r22 100k ? rohm mcr03ezpj104 1/10w j(5%) 1.6mm0.8mm capacitor c17, c23, c31 10uf murata grm31cb11e106ka75l 25v b(10% 3.2mm1.6mm c6, c7 c8, c9 0.1uf grm188b11a104ka92d 10v b(10% 1.6mm0.8mm c11, c14, c26, c30 1000pf grm188b11h102ka01d 50v b(10% 1.6mm0.8mm as return of current regenerated by back emf of out put coil happens, take steps such as putting capaci tor between power supply and gnd as an electric pathway for the regenerated current. be sure that there is no prob lem with each property such as emptied capacity at lower temperat ure regarding electrolytic capacitor to decide capa city value. if the connected power supply does not have sufficient cur rent absorption capacity, regenerative current will cause the voltage on the power supply line to rise, which com bined with the product and its peripheral circuitry may exceed the absolute maximum ratings. it is recommended to impl ement a physical safety measure such as the inserti on of a voltage clamp diode between the power supply and gn d pins. 1 2 3 4 5 6 7 8 control i/f i 2 s i/f driver fet 1p driver fet 1n 9 10 11 12 13 14 15 16 24 23 22 21 20 19 18 17 32 31 30 29 28 27 26 25 driver fet 2p driver fet 2n under voltage protection over voltage protection clock stop protection high temperature protection output short protection output dc voltage protection 8 over sampling digital filter pwm modulator vccp1 gndp1 feedback feedback feedback feedback gndp2 feedback feedback feedback feedback feedback feedback feedback feedback feedback feedback feedback feedback vccp2 error 100k r22 reg3 vcca vcca: 10v16v c31 10f gnda gnda digital audio source lrclk bclk sdata mclk reg3 0.1f c8 fila filp reg_g 0.1f c7 0.1f c6 -con vccp2: 10v16v c26 l26 c30 l30 1000pf 1000pf c23 10f gndp2 plimt1 plimt0 clk_mod vccp1: 10v16v c14 l14 c11 l11 1000pf 1000pf c17 10f gndp1 rstx mutex to control i/f 0.1f c9 out1n out1p out2n out2p sp 2ch (rch) (8) sp 1ch (lch) (8) 3.3v vss 3.3v vss 3.3v vss taiyo yuden l=2.2uh (chip inductor) downloaded from: http:///
% a t a s h e e t 40/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV application circuit example 6 stereo btl output, r l =8 ? , vcc=10v 16v figure 73. application circuit example6 bom list 6 stereo btl output, r l =8 , vcc=10v 16v parts parts no. value company product no. rated voltage tolerance size ic u1 rohm BD5452AMUV 5.0mmx5.0mm common mode choke coil l11, l26 dc 0.024 murata dly5atn401sq2 30v (40%) 3.6mmx5.0mm resistor r22 100k ? rohm mcr03ezpj104 1/10w j(5%) 1.6mm0.8mm capacitor c17, c23, c31 10uf murata grm31cb11e106ka75l 25v b(10% 3.2mm1.6mm c6, c7 c8, c9 0.1uf grm188b11a104ka92d 10v b(10% 1.6mm0.8mm c11, c11_2,c14, c26, c26_2,c30 1000pf grm188b11h102ka01d 50v b(10% 1.6mm0.8mm as return of current regenerated by back emf of out put coil happens, take steps such as putting capaci tor between power supply and gnd as an electric pathway for the regenerated current. be sure that there is no prob lem with each property such as emptied capacity at lower temperat ure regarding electrolytic capacitor to decide capa city value. if the connected power supply does not have sufficient cur rent absorption capacity, regenerative current will cause the voltage on the power supply line to rise, which com bined with the product and its peripheral circuitry may exceed the absolute maximum ratings. it is recommended to impl ement a physical safety measure such as the inserti on of a voltage clamp diode between the power supply and gn d pins. 1 2 3 4 5 6 7 8 control i/f i 2 s i/f driver fet 1p driver fet 1n 9 10 11 12 13 14 15 16 24 23 22 21 20 19 18 17 32 31 30 29 28 27 26 25 driver fet 2p driver fet 2n under voltage protection over voltage protection clock stop protection high temperature protection output short protection output dc voltage protection 8 over sampling digital filter pwm modulator vccp1 gndp1 feedback feedback feedback feedback gndp2 feedback feedback feedback feedback feedback feedback feedback feedback feedback feedback feedback feedback vccp2 error 100k r22 reg3 vcca vcca: 10v16v c31 10f gnda gnda digital audio source lrclk bclk sdata mclk reg3 0.1f c8 fila filp reg_g 0.1f c7 0.1f c6 -con vccp2: 10v16v c26 l26 c30 1000pf 1000pf c23 10f gndp2 plimt1 plimt0 clk_mod vccp1: 10v16v c17 10f rstx mutex to control i/f 0.1f c9 out2n out2p sp 2ch (rch) (8) 3.3v vss 3.3v vss 3.3v vss c26_2 1000pf c14 l11 c11 1000pf 1000pf gndp1 out1n out1p sp 1ch (lch) (8) c11_2 1000pf murata common mode choke coil downloaded from: http:///
& a t a s h e e t 41/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV measurement data unless otherwise specified ta=25 , vcc=12v, f=1khz, rl=8 ? , rstx=3.3v, mutex=3.3v, plimt0=l, plimt1=l, fs=48kh z, mclk=256fs, measured by rohm designed 4 layer board. figure 74. frequency response figure 75. no input signal, test output noise (fft) -140 -120 -100 -80 -60 -40 -20 0 10 100 1k 10k 100k freq [hz] noisefft [dbv] 10uh-out1 10uh-out2 2.2uh-out1 2.2uh-out2 dly401-out1 dly401_out2 no signal 10 12 14 16 18 20 22 24 26 28 30 10 100 1k 10k 100k freq [hz] voltage gain [db] 10uh-out1 10uh-out2 2.2uh-out1 2.2uh-out2 dly401-out1 dly401-out2 po=1w downloaded from: http:///
' a t a s h e e t 42/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV measurement data unless otherwise specified ta=25 , vcc=12v, f=1khz, rl=8 ? , rstx=3.3v, mutex=3.3v, plimt0=l, plimt1=l, fs=48kh z, mclk=256fs, output lc filter l=10uh, c=0.1uf measured by rohm designed 4 layer board. figure 76. thd+n C output power figure 77. thd+n C frequency thd+n =1% 8.5w thd+n=10% 11.0w 0.01 0.1 1 10 100 0.01 0.1 1 10 po [w/ch] thd+n [%] 10uh-out1 10uh-out2 2.2uh-out1 2.2uh-out2 dly401-out1 dly401-out2 =1hz bw=2020khz aes17 0.01 0.1 1 10 100 10 100 1k 10k 100k freq [hz] thd+n [%] 10uh-out1 10uh-out2 2.2uh-out1 2.2uh-out2 dly401-out1 dly401-out2 po=1w bw=2020khz aes17 downloaded from: http:///
( a t a s h e e t 43/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV measurement data unless otherwise specified ta=25 , vcc=12v, f=1khz, rl=8 ? , rstx=3.3v, mutex=3.3v, plimt0=l, plimt1=l, fs=48kh z, mclk=256fs, output lc filter l=10uh, c=0.1uf measured by rohm designed 4 layer board. figure 78. crosstalk C frequency -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1k 10k 100k freq [hz] crosstalk [db] 10uh-out2 to out1 10uh-out1 to out2 2.2uh-out2 to out1 2.2uh-out1 to out2 dly401-out2 to out1 dly401-out1 to out2 po=1w bw=2020khz aes17 downloaded from: http:///
) a t a s h e e t 44/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV 6) the settlement of the snubber measure the spike resonance frequency f1 of the pwm output wave shape (when it stands up.) by using fet probe in the out terminal. (figure 80) the fet probe is to monitor very near pin and shorten grou nd lead at the time of that. measure resonance frequency f2 of the spike as a sn ubber circuit fixed number r=0 ? only with the condenser c, to connect gnd at this time, the value of the condenser c is adju sted until it becomes half of the frequency (2f2=f1) of the resonance frequency f1 of . the value of c which it could get here is three t imes of the parasitic capacity cp that a spike is formed. (c=3cp) parasitic inductance lp is looked for at the next f ormula. the character impedance z of resonance is looked f or from the parasitic capacity cp and the parasitis m inductance lp at the next formula. a snubber circuit fixed number r is set up in the v alue which is the same as the character impedance z . a snubber circuit fixed number c is set up in the value of 4-10 times of the parasitic capacity cp. (c=4cp 10cp) decide it with trade-off with the character because switching electric currents increase when the value of c is enlarged too much. figure 80. snubber schematic ( ) p c f 2 1 p 2 1 l = p p c l = z figure 79. pwm output waveform measure of spike resonance frequency spike resonance frequency 5nsec/div downloaded from: http:///
* a t a s h e e t 45/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV power dissipation measuring instrument th-156 shibukawa kuwano electrical instruments co., ltd. measuring conditions installation on rohm s board board size 74.2mm 74.2mm 1.6mm with thermal via on board material fr4 ? the board on exposed heat sink on the back of packa ge are connected by soldering. pcb ? 4- layer board (top and bottom layer back copper fo il size: 20.2mm2, 2nd and 3rd layer back copper foil size: 5505mm2) , ja = 36.48 /w pcb ? 4-layer board back copper foil size: 5505mm2 , ja = 26.08 /w use a thermal design that allows for a sufficient m argin in light of the power dissipation (pd) in act ual operating conditions. this ic exposes its frame of the backside of packag e. note that this part is assumed to use after prov iding heat dissipation treatment to improve heat dissipation efficiency. t ry to occupy as wide as possible with heat dissipat ion pattern not only on the board surface but also the backside. class d speaker amplifier is high efficiency and lo w heat generation by comparison with conventional a nalog power amplifier. however, in case it is operated continuo usly by maximum output power, power dissipation (pd iss) may exceed package dissipation. please consider about heat des ign that power dissipation (pdiss) does not exceed package dissipation (pd) in average power (poav). tjmax maximum junction temperature=150 , ta peripheral temperature[ ], ja thermal resistance of package[ /w], poav average power[w], efficiency package dissipation : pd w = tjmax - ta ja power dissipation : pdiss w = poav 1 - 1 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 0 25 50 75 100 125 150 ta [ ] pd [w] pcb 4.56w pcb 3.26w vqfn032v5050 figure 81. allowable power dissipation downloaded from: http:///
+ a t a s h e e t 46/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV pin function explanation (provided pin voltages are typ. values) (1/2) pin no. pin name pin voltage pin explanation internal equivalence ci rcuit 4 rstx 0v reset pin for digital circuit h: reset off l: reset on 5 mutex 0v speaker output mute control pin h: mute off l: mute on 1 2 3 32 sdata bclk lrclk mclk digital audio signal input pin 19 20 plimt0 plimt1 power limit setting terminal 21 clk_mod mclk setting terminal 10 gnda 0v gnd pin for analog signal 8 filp 1.6 to 2.4v bias pin for pwm signal please connect the capacitor. 7 reg3 3.3v internal power supply pin for digital circuit please connect the capacitor. 22 error error flag pin please connect pull-up resister. h: while normal l: while error 6 reg_g 5.0v internal power supply pin for gate driver please connect the capacitor. downloaded from: http:///
, a t a s h e e t 47/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV pin function explanation (provided pin voltages are typ. values) (2/2) pin no. pin name pin voltage pin explanation internal equivalence ci rcuit 9 fila 2.5v bias pin for pwm signal. please connect the capacitor. 31 vcca vcc power supply pin for analog signal 23,24 vccp2 vcc power supply pin for ch2 pwm signal please connect the capacitor. 26,27 out2p vcc to 0v output pin of ch2 positive pwm please connect to output lpf. 25,28 gndp2 0v gnd pin for ch2 pwm signal 29,30 out2n vcc to 0v output pin of ch2 negative pwm please connect to output lpf. 11,12 out1n vcc to 0v output pin of ch1 negative pwm please connect to output lpf. 13,16 gndp1 0v gnd pin for ch1 pwm signal 14,15 out1p vcc to 0v output pin of ch1 positive pwm please connect to output lpf. 17,18 vccp1 power supply pin for ch1 pwm signal please connect the capacitor. terminal setting 1) rstx pin, mutex pin function rstx mutex normalcy error detecting pwm output out1p, 1n, 2p, 2n error output pwm output out1p, 1n, 2p, 2n error output l l/h hiz_l (reset_mode) h hiz_l (reset_mode) h h l hiz_l (mute_on) h hiz_l (mute_on) l h h normal operation (mute_off) h hiz_l (mute_on) l rstx(4pin)terminal, mutex(5pin)terminal are interna lly pulled down by 50 k (typ.) with rstx=l data of every register within ic (i 2 s / i/f part, 8 over sampling digital filter part, latch circuit whe n detecting error) becomes unnecessary. downloaded from: http:///
- a t a s h e e t 48/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV c r dc cg r l r dc cg vcc r ds vcc r ds on on off off 2) clk_mod pin function clk_mod mclk input l 256fs h 512fs because care for the pop sound isn't being done, m ake it mute condition, and change clk_mod terminal logic when you change the mode during the movement . 3) plimt pin function plimt1 plimt0 gain setting(btl) condition of power limit l l 26db off l h 20db min. 10 w(at 8 ) h l h h 17db min. 5 w(at 8 ) dont use this condition. because care for the pop sound isn't being done, m ake it mute condition, and change clk_mod terminal logic when you change the mode during the movement . and, powerlimit function of BD5452AMUV is decided as follows. set it up corresponding to the used spe aker because maximum output value varies according to t he speaker load resistance value as mentioned in th e mention in the following. ( ) l l dc ds l g v thd o r r r r r p btl in 2 20 20 %)1 ( 2 10 10 ? ? ? ? ? ? ? ? + + ? ? ? ? ? ? ? ? = ?? ? ?? ? = ( ) l dc ds l g dsp o sp o r r r r v v btl + + = ? ? ? ? ? ? 2 10 20 _ _ vin i2s input level [dbfs] gbtl gain setting [db] rl load resistance [ ? ] rds resistance of fet [ ? ] typ.=0.3 ? rdc dc resistance of coil [ ? ] figure.75 schematic of output equivalent downloaded from: http:///
. a t a s h e e t 49/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV notes for use 1 ) absolute maximum ratings use of the ic in excess of absolute maximum ratings such as the applied voltage or operating temperatu re range may result in ic damage. assumptions should not be made regarding the state of the ic (short mode or open mode) when such damage is suffered. a physical safety measure such as a fuse should be implemented when use of th e ic in a special mode where the absolute maximum ratings may be exceeded is anticipated. 2 ) power supply lines as return of current regenerated by back emf of out put coil happens, take steps such as putting capaci tor between power supply and gnd as an electric pathway for the regenerated current. be sure that there is no prob lem with each property such as emptied capacity at lower temperat ure regarding electrolytic capacitor to decide capa city value. if the connected power supply does not have sufficient cur rent absorption capacity, regenerative current will cause the voltage on the power supply line to rise, which com bined with the product and its peripheral circuitry may exceed the absolute maximum ratings. it is recommended to impl ement a physical safety measure such as the inserti on of a voltage clamp diode between the power supply and gn d pins. 3 ) gnd potential pin 10, 13, 16, 25, 28 . any state must become the lowest voltage about gnd terminal and vss terminal. 4 ) input terminal the parasitic elements are formed in the ic because of the voltage relation. the parasitic element ope rating causes the wrong operation and destruction. therefore, please be careful so as not to operate the parasitic eleme nts by impressing to input terminals lower voltage than gn d and vss. please do not apply the voltage to the i nput terminal when the power-supply voltage is not impressed. 5 ) actions in strong magnetic field use caution when using the ic in the presence of a strong magnetic field as doing so may cause the ic to malfunction. 6 ) thermal shutdown circuit this product is provided with a built-in thermal sh utdown circuit. when the thermal shutdown circuit o perates, the output transistors are placed under open status. th e thermal shutdown circuit is primarily intended to shut down the ic avoiding thermal runaway under abnormal conditions with a chip temperature exceeding tjmax = 150 . 7 ) shorts between pins and miss installation when mounting the ic on a board, pay adequate atten tion to orientation and placement discrepancies of the ic. if it is missing installed and the power is turned on, the i c may be damaged. it also may be damaged if it is s horted by a foreign substance coming between pins of the ic or between a pin and a power supply or a pin and a gnd . 8 ) power supply on/off pin 17, 18, 23, 24, 31 in case power supply is started up, rstx pin 4 and mutex(pin 5) always should be set low. and in c ase power supply is shut down, it should be set low likewise. then it is possible to eliminate pop noise when po wer supply is turned on/off. and also, all power supply terminals should start up and shut down together. 9 ) error terminal pin 22 an error flag is outputted when output short protec tion and dc voltage protection in the speaker are o perated. these flags are the function which the condition of this product is shown in. 10) precautions for speaker-setting if the impedance characteristics of the speakers at high-frequency range while increase rapidly, the i c might not have stable-operation in the resonance frequency range o f the lc-filter. therefore, consider adding damping-circuit, etc., depending on the impedance of the speaker 11) about short to vcc or gnd after the lc filter though this ic has a short protection function, whe n short to vcc or gnd after the lc filter a short p rotection function operate by over-electric current. but, be fully car eful because over/undershoot which exceeds a maximu m standard by back electromotive force of the coil absolutely occ urs and sometimes reaches it for the destruction. 12) about reg terminals the reg terminal of BD5452AMUV doesn't aim at suppl ying it to the outside. therefore, don't connect the one except for pullup of the condenser for the stabilization and the erro r terminal. status of this document the japanese version of this document is formal sp ecification. a customer may use this translation ve rsion only for a reference to help reading the formal ve rsion. if there are any differences in translation versio n of this document formal version takes priority downloaded from: http:///
/ a t a s h e e t 50/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV ordering information b d 5 4 5 2 a m u v e 2 part number package muv: vqfn032v5050 packaging and forming specification e2: embossed tape and reel physical dimension tape and reel information marking diagram(s)(top view) (unit : mm) vqfn032v5050 0.08 s s 1.0max (0.22) 0.02 +0.03 - 0.02 24 8 1 9 32 16 25 17 0.5 0.75 0.4 0.1 3.4 0.1 3.4 0.1 0.25 +0.05 - 0.04 c0.2 5.0 0.1 5.0 0.1 1pin mark ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape tapequantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 2500pcs e2 ( ) direction of feed reel 1pin vqfn032v5050(top view) d 5 4 5 2 a part number marking lot number 1pin mark downloaded from: http:///
0 a t a s h e e t 51/51 tsz02201-0v1v0e954520-1- 2 ? 2012 rohm co., ltd. all rights reserved. 04.oct.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 BD5452AMUV revision history date revision changes 04.oct.2012 001 new release downloaded from: http:///
datasheet d a t a s h e e t notice - ge rev.002 ? 2014 rohm co., ltd. all rights reserved. notice precaution on using rohm products 1. our products are designed and manufac tured for application in ordinary elec tronic equipments (such as av equipment, oa equipment, telecommunication equipment, home electroni c appliances, amusement equipment, etc.). if you intend to use our products in devices requiring ex tremely high reliability (such as medical equipment (note 1) , transport equipment, traffic equipment, aircraft/spacecra ft, nuclear power controllers, fuel c ontrollers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property (specific applications), please consult with the rohm sale s representative in advance. unless otherwise agreed in writing by rohm in advance, rohm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ro hms products for specific applications. (note1) medical equipment classification of the specific applications japan usa eu china class class class b class class | class 2. rohm designs and manufactures its products subject to strict quality control system. however, semiconductor products can fail or malfunction at a certain rate. please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe desi gn against the physical injury, damage to any property, which a failure or malfunction of our products may cause. the following are examples of safety measures: [a] installation of protection circuits or other protective devices to improve system safety [b] installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. our products are designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditio ns, as exemplified below. accordin gly, rohm shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of an y rohms products under any special or extraordinary environments or conditions. if you intend to use our products under any special or extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] use of our products in any types of liquid, incl uding water, oils, chemicals, and organic solvents [b] use of our products outdoors or in places where the products are exposed to direct sunlight or dust [c] use of our products in places where the products ar e exposed to sea wind or corrosive gases, including cl 2 , h 2 s, nh 3 , so 2 , and no 2 [d] use of our products in places where the products are exposed to static electricity or electromagnetic waves [e] use of our products in proximity to heat-producing components, plastic cords, or other flammable items [f] sealing or coating our products with resin or other coating materials [g] use of our products without cleaning residue of flux (ev en if you use no-clean type fluxes, cleaning residue of flux is recommended); or washing our products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] use of the products in places subject to dew condensation 4. the products are not subjec t to radiation-proof design. 5. please verify and confirm characteristics of the final or mounted products in using the products. 6. in particular, if a transient load (a large amount of load applied in a short per iod of time, such as pulse. is applied, confirmation of performance characteristics after on-boar d mounting is strongly recomm ended. avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading c ondition may negatively affect product performance and reliability. 7. de-rate power dissipation (pd) depending on ambient temper ature (ta). when used in seal ed area, confirm the actual ambient temperature. 8. confirm that operation temperat ure is within the specified range described in the product specification. 9. rohm shall not be in any way responsible or liable for fa ilure induced under deviant condi tion from what is defined in this document. precaution for mounting / circuit board design 1. when a highly active halogenous (chlori ne, bromine, etc.) flux is used, the resi due of flux may negatively affect product performance and reliability. 2. in principle, the reflow soldering method must be used; if flow soldering met hod is preferred, please consult with the rohm representative in advance. for details, please refer to rohm mounting specification downloaded from: http:///
datasheet d a t a s h e e t notice - ge rev.002 ? 2014 rohm co., ltd. all rights reserved. precautions regarding application examples and external circuits 1. if change is made to the constant of an external circuit, pl ease allow a sufficient margin considering variations of the characteristics of the products and external components, including transient characteri stics, as well as static characteristics. 2. you agree that application notes, re ference designs, and associated data and in formation contained in this document are presented only as guidance for products use. theref ore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. rohm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. precaution for electrostatic this product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. please take proper caution in your manufacturing process and storage so that voltage exceeding t he products maximum rating will not be applied to products. please take special care under dry condit ion (e.g. grounding of human body / equipment / solder iron, isolation from charged objects, se tting of ionizer, friction prevention and temperature / humidity control). precaution for storage / transportation 1. product performance and soldered connections may deteriora te if the products are stor ed in the places where: [a] the products are exposed to sea winds or corros ive gases, including cl2, h2s, nh3, so2, and no2 [b] the temperature or humidity exceeds those recommended by rohm [c] the products are exposed to di rect sunshine or condensation [d] the products are exposed to high electrostatic 2. even under rohm recommended storage c ondition, solderability of products out of recommended storage time period may be degraded. it is strongly recommended to confirm sol derability before using products of which storage time is exceeding the recommended storage time period. 3. store / transport cartons in the co rrect direction, which is indicated on a carton with a symbol. otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. use products within the specified time after opening a humidity barrier bag. baking is required before using products of which storage time is exceeding the recommended storage time period. precaution for product label qr code printed on rohm products label is for rohms internal use only. precaution for disposition when disposing products please dispose them proper ly using an authorized industry waste company. precaution for foreign exchange and foreign trade act since our products might fall under cont rolled goods prescribed by the applicable foreign exchange and foreign trade act, please consult with rohm representative in case of export. precaution regarding intellectual property rights 1. all information and data including but not limited to application example contained in this document is for reference only. rohm does not warrant that foregoi ng information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. rohm shall not be in any way responsible or liable for infringement of any intellectual property rights or ot her damages arising from use of such information or data.: 2. no license, expressly or implied, is granted hereby under any intellectual property rights or other rights of rohm or any third parties with respect to the information contained in this document. other precaution 1. this document may not be reprinted or reproduced, in whol e or in part, without prior written consent of rohm. 2. the products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of rohm. 3. in no event shall you use in any wa y whatsoever the products and the related technical information contained in the products or this document for any military purposes, incl uding but not limited to, the development of mass-destruction weapons. 4. the proper names of companies or products described in this document are trademarks or registered trademarks of rohm, its affiliated companies or third parties. downloaded from: http:///
datasheet datasheet notice C we rev.001 ? 2014 rohm co., ltd. all rights reserved. general precaution 1. before you use our pro ducts, you are requested to care fully read this document and fully understand its contents. rohm shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny rohms products against warning, caution or note contained in this document. 2. all information contained in this docume nt is current as of the issuing date and subj ec t to change without any prior notice. before purchasing or using rohms products, please confirm the la test information with a rohm sale s representative. 3. the information contained in this doc ument is provi ded on an as is basis and rohm does not warrant that all information contained in this document is accurate an d/or error-free. rohm shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information. downloaded from: http:///

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