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5-channel motor driver for dvd player AM5668 data sheet 1 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited general description the AM5668 is a five-channel btl driver ic, in which four channels are vol tage-type btl drivers for tracking and focus actuators, sled and spindle motors, the other one channel is dc motor driver for tray which supports forward/reverse control. this ic also contains two general-purpose independent precise voltage comparators. the AM5668 is available in standard hsop-28 pack- age. features 4-channel dc motor btl driver 1-channel forward/reverse control dc motor btl driver two built-in comparators built-in level shift circuit built-in mute mode built-in thermal shutdown circuit operating voltage: 4.3v to 13.2v application dvd player figure 1. package type of AM5668 hsop-28
5-channel motor driver for dvd player AM5668 data sheet 2 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited pin configuration figure 2. pin configuration of AM5668 (top view) m28 package hsop-28
2 9 10 11 12 13 14 8 6 1 3 4 5 7 28 27 26 25 24 23 22 21 20 19 18 17 15 16 mute bias vintk vinsp gnd vctl v cc2 vosp- vosp+ votk- votk+ vinfc op2in- vinsl fwd rev v cc1 votr- votr+ vosl+ vosl- vofc- vofc+ op2in+ op2out op1in- op1in+ op1out (pgnd) (pgnd)
5-channel motor driver for dvd player AM5668 data sheet 3 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited pin description (note 1) pin number pin name function 1 vinfc input for focus driver 2 op2in- comparator 2 input (-) 3 op2in+ comparator 2 input (+) 4 vinsl input for the sled driver 5 op2out comparator 2 output 6 fwd tray driver forward input 7 rev tray driver reverse input 8v cc1 v cc for pre-driver block and power block of sled and tray 9 votr- tray driver output (-) 10 votr+ tray driver output (+) 11 vosl+ sled driver output (+) 12 vosl- sled driver output (-) 13 vofc- focus driver output (-) 14 vofc+ focus driver output (+) 15 votk+ tracking driver output (+) 16 votk- tracking driver output (-) 17 vosp+ spindle driver output (+) 18 vosp- spindle driver output (-) 19 v cc2 v cc for power block of spindle, tracking and focus 20 op1out comparator 1 output 21 vctl speed control input of tray driver 22 gnd ground 23 vinsp input for spindle driver 24 op1in- comparator 1 input (-) 25 op1in+ comparator 1 input (+) 26 vintk input for tracking driver 27 bias input for reference voltage 28 mute input for mute control note 1: symbols of + and - (output of drivers) mean polarity with respect to input pin. (for example, if voltage of pin 1 is high, pin 14 is high and pin 13 is low.)
5-channel motor driver for dvd player AM5668 data sheet 4 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited functional block diagram figure 3. functional block diagram of AM5668 42.5k sled driver (4x) actuator driver (6x) 42.5k 17k spindle driver (4x) actuator driver (6x) mute bias vintk op1in+ op1in- vinsp gnd vctl op1out v cc2 vosp- vosp+ votk- votk+ vinfc op2in- op2in+ vinsl op2out fwd rev v cc1 votr- votr+ vosl+ vosl- vofc- vofc+ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 mute thermal shut down v cc2 v cc2 v cc1 tray driver pre-drv pgnd pgnd v cc2 v cc1 17k 17k 17k 42.5k 25.5k
5-channel motor driver for dvd player AM5668 data sheet 5 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited ordering information absolute maximum ratings (t a =25 o c) (note 2) recommended operating conditions (t a =25 o c) parameter symbol value unit supply voltage v cc1, 2 13.5 v power dissipation p d 1.7 (note 3, 4) w operating junction temperature t j 150 o c storage temperature t stg -55 to 150 o c esd (human body model) esd 2000 v esd (machine model) esd 200 v parameter symbol min max unit supply voltage v cc1 4.3 13.2 v v cc2 4.3 to v cc1 v operating temperature t a 070 o c note 2: stresses greater than those listed under "a bsolute maximum ratings" may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. exposure to "absolute max- imum ratings" for extended periods may affect device reliability. note 3: a. when mounted on a 70mm x 70mm x 1.6mm glass epoxy board. b. reduced by 13.6mw for each increase in t a of 1 o c over 25 o c . note 4: do not exceed p d and soa and t j =150 o c values. package temperature range part number marking id packing type tin lead lead free tin lead lead free hsop-28 0 to 70 AM5668m28 AM5668m28-e1 AM5668m28 AM5668m28-e1 tube bcd semiconductor's pb-free products, as designated with "e1" suffix in th e part number, are rohs compliant. circuit type package m28: hsop-28 e1: lead free blank: tin lead AM5668 -
5-channel motor driver for dvd player AM5668 data sheet 6 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited electrical characteristics parameter symbol conditions min typ max unit quiescent current i qc no load 20 ma mute on voltage v ston 00.5v mute off voltage v stoff 2.0 v cc1 v focus driver output offset voltage v ooffc -50 50 mv maximum output voltage v omfc at 10 ? load 3.1 3.4 v closed-loop voltage gain g vfc v in =v bias 0.2v 23.5 db tracking driver output offset voltage v ooftk -50 50 mv maximum output voltage v omtk at 10 ? load 3.1 3.4 v closed-loop voltage gain g vtk v in =v bias 0.2v 23.5 db spindle motor driver output offset voltage v oofsp -50 50 mv maximum output voltage v omsp at 8 ? load 3.1 3.3 v closed-loop voltage gain g vsp v in =v bias 0.2v 13.3 15.5 17.5 db gain error by polarity ? g vsp v in =v bias 0.2v 012db sled motor driver output offset voltage v oofsl -100 100 mv maximum output voltage v omsl at 8 ? load 3.1 3.3 v closed-loop voltage gain g vsl v in =v bias 0.2v 18.0 20.0 22.0 db tray motor driver output saturation voltage 1 v sat1tr upper + lower saturation, i l =200ma 1.4 1.6 v (t a =25 o c , v cc1 =v cc2 =5v, v bias =2.5v, c vcc1 =c vcc2 =0.1 f, unless otherwise specified.)
5-channel motor driver for dvd player AM5668 data sheet 7 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited electrical characteristics (continued) parameter symbol conditions min typ max unit output saturation voltage between fwd and rev ? v sat1tr output saturation voltage 1 between fwd and rev 0.1 v output saturation voltage 2 v sat2tr upper + lower saturation, i l =500ma 2.3 2.5 v output adjustable gain on "h" side voltage g vtrh "h" side output for input (vctl=1v) 7.4 9.2 11 db tray motor driver input logic high level input voltage v ih 2.0 v cc1 v low level input voltage v il 00.8v high level input current i ih v fwd =v rev =5v 180 270 a comparator input offset voltage v io 3mv input common-mode volt- age range v cm 0 v cc1 ? 1.5 v voltage gain g v r l 15k ? 80 db output sink current i sink v out < 1.5v 6.0 ma saturation voltage v sat i sink 2ma 250 500 mv
5-channel motor driver for dvd player AM5668 data sheet 8 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited test circuit figure 4. test circuit of AM5668 r l5 r l1 r l3 r l4 r l2 v1 v4 v6 v7 v8 45 8 10 v28 v27 v26 8 v19 10 v23 21 15 16 17 18 19 20 22 23 24 25 26 27 28 8 14 13 12 11 10 9 7 6 5 4 3 2 1 AM5668 v21 v3 v2 v5 v24 v25 v20 v v c vcc1 c vcc2
5-channel motor driver for dvd player AM5668 data sheet 9 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited typical performance characteristics figure 5. focus driver characteristics (note 5) figure 8. spindle driver characteristics (note 5) figure 7. sled driver characteristics (note 5) -0.4 -0.2 0.0 0.2 0.4 -4 -3 -2 -1 0 1 2 3 4 v cc1 =v cc2 =5v v bias =2.5v r l =8 ? input voltage: v in (v) output voltage: v o (v) -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 -4 -3 -2 -1 0 1 2 3 4 v cc1 =v cc2 =5v v bias =2.5v r l =10 ? input voltage: v in (v) output voltage: v o (v) -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 -4 -3 -2 -1 0 1 2 3 4 v cc1 =v cc2 =5v v bias =2.5v r l =8 ? output voltage: v o (v) input voltage: v in (v) figure 6. tracking driver characteristics (note 5) -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 -4 -3 -2 -1 0 1 2 3 4 v cc1 =v cc2 =5v v bias =2.5v r l =10 ? input voltage: v in (v) output voltage: v o (v) note 5: input voltage herein is referenced to bias pin voltage.
5-channel motor driver for dvd player AM5668 data sheet 10 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited typical performance ch aracteristics (continued) figure 9. power dissipation curve (note 3) 0 50 100 150 0.0 0.4 0.8 1.2 1.6 2.0 power dissipation: p d (w) ambient temperature: t a ( o c)
5-channel motor driver for dvd player AM5668 data sheet 11 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited typical application figure 10. typical application of AM5668 in dvd player 5v 5v mute spindle servo -com sled focus tracking v ref rev fwd m m focus coil m tracking coil 21 15 16 17 18 19 20 22 23 24 25 26 27 28 8 14 13 12 11 10 9 7 6 5 4 3 2 1 AM5668 tray voltage control servo spin- spin+ spin+ spin- servo
5-channel motor driver for dvd player AM5668 data sheet 12 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited application information fwd (pin6) rev (pin7) votr+ (pin10) votr- (pin9) function l l open open open mode lh l h reverse mode hl h l forward mode hh l l brake mode 1. the built-in thermal shutdown circuit mutes the output current when the chip temperature reaches 175 o c (typ). the hyster esis is set to 25 o c (typ), so the circuit will start up again when the chip temperature falls to 150 o c (typ). 2. in case mute pin voltage is under 0.5v or this pin is not connected, output curren t is muted (except for tray motor driver). mute pin voltage should be more than 2.0v for normal application. 3. bias pin (pin 27) should be pulled up to more than 1.2v. in case the bias pin voltage is pulled down below 0.9v (typ), the output current is muted. 4. insert the bypass capacitor (about 0.1 f) between v cc pin and gnd pin as close as possible to this chip. 5. heat dissipation fins are attached to the gnd on the inside of the package. make sure to connect them to the external gnd. 6. tray driver logic input: input circuit of pins 6 and 7 is designed to avoid simultaneous activation of upper and lower output tray; however, in order to improve reliability, apply motor forward/reverse input once through open mode. we recommend time period for open longer than 10msec. "h" side output voltage on output pins (votr+ or votr-) varies depending on output control terminal for tray (pin 21). "h" side output voltage is set to three times (9.2db typ) the voltage of vctl (pin 21). and, "l" side output voltage is equal to output saturation voltage.
5-channel motor driver for dvd player AM5668 data sheet 13 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited mechanical dimensions hsop-28 unit: mm(inch) 17.890(0.704) 0.204(0.008) 0 o _ 8 o 18.190(0.716) 0.360(0.014) 0.400(0.016) 1.270(0.050) 10.000(0.394) 10.650(0.419) 7.400(0.291) 7.600(0.300) 0.230(0.009) 0.470(0.019) 0.100(0.004) 0.300(0.012) 2.280(0.090) 2.630(0.104) 2.180(0.086) 2.330(0.092) 0.800(0.031) typ 5.050(0.199) 5.250(0.207)
important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing limited 800, yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 bcd semiconductor manufacturing limited main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd. shenzhen office advanced analog circuits (shanghai) corporation shenzhen office room e, 5f, noble center, no.1006, 3rd fuzhong road, futian district, shenzhen 518026, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 taiwan office bcd semiconductor (taiwan) company limited 4f, 298-1, rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656 2808 fax: +886-2-2656 2806 usa office bcd semiconductor corporation 30920 huntwood ave. hayward, ca 94544, u.s.a tel : +1-510-324-2988 fax: +1-510-324-2788 - ic design group advanced analog circuits (shanghai) corporation 8f, zone b, 900, yi shan road, shanghai 200233, china tel: +86-21-6495 9539, fax: +86-21-6485 9673 bcd semiconductor manufacturing limited http://www.bcdsemi.com

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