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1/24 XC6421 series 300ma small high speed dual ldo regulat or, built-in inrush current protection ? typical application circuits etr0353-003 general description the XC6421 series is an ultra small cmos dual ldo r egulator, mounting 300ma 2-c hannel small high speed ldo. the series features high accuracy, high ripple rejection and low dropout voltage. the series is capable of high density board installation by the ultra small package of two low on-resistance regulators. both output accuracies are 1% by laser trimming. each regulator can be turned off independently to be in stand-by mode by controlling en pin. in this state, the electric c harge at the output capacitor (c l ) is discharged via the internal auto-discharge switch, and as a result the v out voltage quickly returns to the v ss level. the output stabilization capacitor (c l ) is also compatible with low esr ceramic capacitors. the high level of output stability is maintained even during frequent load fluctuations, due to the excellent transient respons e performance. over current protection circuit and over he at protection circuit are mounted, these circuits star t working when output current reaches junction temperature or limit current. the two regulators are completely isolated so that a cross talk during load fluctuations is minimized features maximum output current : 300ma operating voltage range : 1.6v 5.5v output voltages : 1.2v 3.6v (0.05v increments) output accuracy : 1% (v out R 2.00v) 20mv(v out Q 1.95v) dropout voltage : 210mv@i out =300ma v out =3.0v low power consumption : 90 a / ch (typ.) stand-by current : 0.1 a ripple rejection : 75db@1khz on/off control : active high c l discharge protection current limit 450ma (typ.) short circuit 125ma (typ.) inrush current protection thermal shutdown low esr capacitor : 1.0 f ceramic capacitor operating ambient temperature : -40 +85 package : usp-6c environmentally friendly : eu rohs compliant, pb free a pplications ? mobile phones ? portable game consoles ? portable multimedia player ? digital still cameras, camcorders ? typical performance characteristics XC6421(v out =1.8v) 0 20 40 60 80 100 0.1 1 10 100 1000 ripple frequency : f (khz) ripple rejection : rr (db) iout=0.1ma iout=1ma iout=30ma iout=100ma v in =3.0v+0.5v p- pac , ta=25 c in =0.1f(ceramic), c l =1.0f(ceramic ) www.datasheet.co.kr datasheet pdf - http://www..net/
2/24 XC6421 series pin configuration pin assignment ? ? ? ? ? ? pin number usp-6c pin name functions 1 en2 on/off control 2 2 v in power input 3 en1 on/off control 1 4 v ss ground 5 v out1 output 1 6 v out2 output 2 en2 v in en1 v out2 v out1 v ss * the dissipation pad for the usp-6c package should be solder-plated in recommended mount pattern and metal masking to enhance mounting strength and heat release. if the pad needs to be c onnected to other pins, it should be connected to the v ss (no. 4) pin. www.datasheet.co.kr datasheet pdf - http://www..net/
3/24 XC6421 series ? product classification ? ? designator ?? : output voltage ?? vr1(v) vr2(v) ?? vr1(v) vr2(v) 01 1.20 1.20 34 2.80 3.00 02 1.20 1.50 35 2.80 3.30 03 1.20 2.50 36 1.20 3.60 04 1.20 2.85 37 3.60 1.20 05 1.20 3.00 38 1.20 2.80 06 1.20 3.30 39 3.30 2.00 07 1.50 1.50 40 3.00 3.30 08 1.50 1.80 41 3.30 3.30 09 1.50 2.50 42 1.30 1.50 10 1.50 2.85 43 2.60 2.80 11 1.50 3.00 44 3.10 3.30 12 1.50 3.30 45 1.50 2.60 13 1.80 1.80 46 2.60 3.30 14 1.80 2.50 47 3.40 3.40 15 2.85 2.85 48 2.85 2.60 16 1.80 2.85 49 3.30 1.80 17 1.80 3.00 50 1.80 1.20 18 3.00 1.80 51 3.10 3.10 19 1.80 3.30 52 1.50 3.10 20 2.50 2.50 53 3.30 2.80 21 2.50 2.80 54 3.00 2.80 22 2.50 2.85 55 3.30 3.00 23 3.30 1.50 56 3.60 3.60 24 2.50 3.00 57 3.30 3.10 25 2.50 3.30 58 3.10 3.00 26 2.85 3.00 59 3.10 2.90 27 2.85 3.30 60 3.10 2.50 28 3.00 3.00 61 3.00 2.90 29 1.20 1.80 62 3.00 2.50 30 1.30 2.80 63 1.80 1.90 31 1.50 2.80 64 1.80 1.85 32 1.80 2.80 65 1.70 1.70 33 2.80 2.80 *for other output voltage combinations, please contact your local torex sales office or representative. designator item symbol description basic function a en1: active high , en2: active high built-in thermal shutdown inrush current protection v out1 : c l discharge, v out2 : c l discharge enable pin b en1: with pull-down en2: with pull-down ? output voltage 01 ? see the chart below ?- package (order unit) er -g usp-6c (3,000/reel) XC6421 ?????- (*1) ? orderin g information (*1) the ?-g? suffix indicates that the products are halogen and antimony free as well as being fully rohs compliant. www.datasheet.co.kr datasheet pdf - http://www..net/
4/24 XC6421 series block diagram absolute maximum ratings parameter symbol ratings units input voltage v in vss-0.3 vss +7.0 v output current i out1 +i out2 800 (*1) ma output voltage 1, output voltage2 v out1, v out2 v ss -0.3 v in +0.3 Q vss +7.0 v en1, en2 input voltage v en1, v en2 v ss -0.3 vss +7.0 v 120 power dissipation usp-6c pd 1000 (pcb mounted) (*2) mw operating ambient te mperature topr -40 +85 storage temperature tstg -55 +125 (*1) pd > { (v in -v out1 )i out1 + (v in -v out2 )i out2 } (*2) the power dissipation figure shown is pcb mount ed. please refer to page 22 for details. * diodes inside the circuits are esd protection diodes and parasitic diodes. www.datasheet.co.kr datasheet pdf - http://www..net/
5/24 XC6421 series electrical characteristics XC6421 series regulator 1, regulator 2 parameter symbol conditions min. typ. max. units circuits v out R 2.0v, v en =v in , i out =10ma v out(t) 0.99 (*2) v out(t) (*3) v out(t) 1.01 (*2) v output voltage v out(e) (*2) v out 2.0v, v en =v in , i out =10ma v out(t) ? 20mv (*2) v out(t) (*3) v out(t) +20mv (*2) v maximum output current i outmax v en =v in 300 - - ma load regulation v out v en =v in , 0.1ma Q i out Q 300ma - 25 45 mv dropout voltage (*4) vdif i out =300ma, v en =v in see the chart below mv supply current i ss v en =v in , i out =0ma - 90 190 a stand-by current i stb v en =v ss 0.01 0.1 a 2.5v Q v in Q 5.5v, v out(t) Q 2.0v , v en =v in , i out =30ma line regulation v out / ( v in ? v out ) v out(t) +0.5v Q v in Q 5.5v, v out(t) R 2.05v , v en =v in , i out =30ma - 0.02 0.1 %/v input voltage v in - 1.6 - 5.5 v output voltage temperature characteristics (r&d value) v out / ( ta ? v out ) v en =v in , i out =10ma, -40 Q ta Q 85 - 100 - ppm / ripple rejection rate psrr v en= v in , v in = v out(t) +1.0 +0.5vp-pac i out =30ma, f=1khz - 75 - db limit current i lim v en =v in 310 450 - ma short-circuit current i short v en =v in , v out =v ss - 125 - ma en?h?level voltage v enh - 1.0 - 5.5 v en?l?level voltage v enl - 0 - 0.3 v en?h?level current i enh v en =v in =5.5v 2.9 6.0 9.5 a en?l?level current i enl v en =v ss -0.1 - 0.1 a c l discharge resistance r dchg v in =5.5v, v en =v ss , v out =2.0v - 230 - ? inrush current i rush - - 150 - ma thermal shutdown detect temperature t tsd junction temperature - 150 - thermal shutdown release temperature t tsr junction temperature - 125 - thermal shutdown release temperature t tsd t tsr junction temperature - 25 - ? ? ? ? note: unless otherwise stated, {v in =v out(t) +1.0v} each channel is measured when the other channel is turned off (v en =v ss ). *1 v out(e) : effective output voltage (see the voltage chart) (ie. the output voltage when ?v out(t) +1.0v? is provided at the v in pin while maintaining a certain i out value. *2 characteristics of the actual v out(e) by nominal output voltage is shown in the voltage chart. *3 v out(t) : nominal output voltage *4 vdif {v in1 v out1 } v out1 : a voltage equal to 98% of the output voltage whenever an amply stabilized {v out(t) +1.0v} is input with every i out . v in1 : the input voltage when v out1 appears as input voltage is gradually decreased. ta = 2 5 www.datasheet.co.kr datasheet pdf - http://www..net/
6/24 XC6421 series output voltage chart ? regulator 1, regulator 2 ? voltage chart ? ? ? ? ? nominal output voltae (v) output voltage (v) dropout voltage (mv) nominal output voltae (v) output voltage (v) dropout voltage (mv) v out(e) vdif v out(e) vdif v out(t) min. max. typ. max. v out(t) min. max. typ. max. 1.200 1.1800 1.2200 2.500 2.4750 2.5250 1.250 1.2300 1.2700 580 680 2.550 2.5245 2.5755 1.300 1.2800 1.3200 2.600 2.5740 2.6260 1.350 1.3300 1.3700 515 610 2.650 2.6235 2.6765 1.400 1.3800 1.4200 2.700 2.6730 2.7270 1.450 1.4300 1.4700 2.750 2.7225 2.7775 1.500 1.4800 1.5200 2.800 2.7720 2.8280 1.550 1.5300 1.5700 460 550 2.850 2.8215 2.8785 1.600 1.5800 1.6200 2.900 2.8710 2.9290 1.650 1.6300 1.6700 2.950 2.9205 2.9795 240 290 1.700 1.6800 1.7200 3.000 2.9700 3.0300 1.750 1.7300 1.7700 380 450 3.050 3.0195 3.0805 1.800 1.7800 1.8200 3.100 3.0690 3.1310 1.850 1.8300 1.8700 3.150 3.1185 3.1815 1.900 1.8800 1.9200 3.200 3.1680 3.2320 1.950 1.9300 1.9700 330 390 3.250 3.2175 3.2825 2.000 1.9800 2.0200 3.300 3.2670 3.3330 2.050 2.0295 2.0705 3.350 3.3165 3.3835 2.100 2.0790 2.1210 3.400 3.3660 3.4340 2.150 2.1285 2.1715 3.450 3.4155 3.4845 2.200 2.1780 2.2220 3.500 3.4650 3.5350 2.250 2.2275 2.2725 3.550 3.5145 3.5855 2.300 2.2770 2.3230 3.600 3.5640 3.6360 210 260 2.350 2.3265 2.3735 2.400 2.3760 2.4240 2.450 2.4255 2.4745 295 350 ta = 2 5 www.datasheet.co.kr datasheet pdf - http://www..net/
7/24 XC6421 series operational explanation ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? the voltage divided by resistors rx1 & rx2 is compared with the internal reference voltage by the error amplifier. the p-channel mosfet which is c onnected to the output pin (v out ) is then driven by the subseque nt control signal. the output voltage at the output pin (v out ) is controlled and stabilized by a system of neg ative feedback. the current limit circuit, short circuit protection and thermal protection operate in relation to the level of output current a nd heat dissipation. further, th e ic?s internal circuitry can be shutdown via the en pin signal. the XC6421 series needs an output capacitor (c l ) for phase compensation. in order to ensure the stable phase compensation, please place an output capacitor (c l ) of 1.0 f or bigger at the v out pin and v ss pin as close as possible. for a stable power input, please connect an input capacitor (c in ) of 1.0 f between v in pin and v ss pin. the XC6421 series has current limiter and droop shape of fo ld-back circuit. when the load current reaches the current limit, the droop current limiter circuit op erates and the output voltage drops. w hen the output voltage dr opped, the fold-back circuit operates and the output current goes to decrease. the output current finally falls at the level of 125ma when the outp ut pin is short-circuited. the ic's internal circuitry can be shutdown via the signal from the en pin. in shutdown mode, the XC6421 series enables the electric charge at the output capacitor (c l ) to be discharged via the internal auto-dischar ge switch, and as a result the output pin (v out ) quickly returns to the ground pin (v ss ) level. on the other hand, the XC6421 series has a pull-down resistor at the en pin inside, so that the en pin input current flows. if this en pin voltage is set with the specified voltage range, the logic is fixed and the ic will operate normally. however, the supply current may increase as a result of shoot-through current in the ic's internal circuitry when a medium voltage is input to the en pin. + - error amp voltage reference r11 r12 c fb v in en1 v ss v out 1 tsd + - error amp r21 r22 c fb en2 v out 2 on/off control on/off control voltage reference in-rush- current- prevent in-rush- current- prevent XC6421abxxxxseries current limit current limit r dchg 2 r dchg 1 www.datasheet.co.kr datasheet pdf - http://www..net/
8/24 XC6421 series operational explanation (continued) XC6421 series can quickly discharge the el ectric charge at the output capacitor (c l ), when a low signal is inputted to the en pin, which enables a part of the ic circuit put into off st ate, via the n-channel transistor located between the v out pin and the v ss pin (cf. block diagram). the c l discharge resistance is set to 230
when v in is 5.5v (typ.) and v out is 2.0v (typ.). moreover, discharge time of the output capacitor (c l ) is set by the c l auto-discharge resistance and the output capacitance (c l ). by setting time constant of a c l auto-discharge resistance [r dchg ] and an output capacitance (c l ) as ( = c l x r dchg ), the output voltage after discharge via the n channel transistor is calculated by the following formulas. v = v out(e) x e ?t/ , or t= in ( v out(e) / v ) v : output voltage after discharge v out(e) : output voltage t: discharge time, : r dchg c l c l output capacitance r dchg c l auto-discharge resistance when the junction temperature of the bui lt-in driver transistor reaches the te mperature limit, the thermal shutdown circuit operates and the driver transistor will be set to of f. the ic resumes its operation when the thermal shutdown function is released and the ic?s operation is automatically restored because the junction temperature drops to the level of the ther mal shutdown release voltage. the inrush current protection circuit is built in the XC6421 series. when the ic starts to operate, the pr otection circuit limits the inrush current as 150ma (typ.) from input pin (v in ) to output pin (v out ) for charging c l capacitor. www.datasheet.co.kr datasheet pdf - http://www..net/
9/24 XC6421 series notes on use ? ? ? 1 for temporary, transitional voltage drop or voltage rising phe nomenon, the ic is liable to malfunction should the ratings be exceeded. 2. ? where wiring impedance is high, operations may become uns table due to the noise and/or phase lag depending on output current. please strengthen v in and v ss wiring in particular. 3. please wire the input capacitor (c in ) and the output capacitor (c l ) as close to the ic as possible. 4. torex places an importance on impr oving our products and its reliability. however, by any possibility, we would request user fa il-safe design and post-aging tr eatment on system or equipment. www.datasheet.co.kr datasheet pdf - http://www..net/
10/24 XC6421 series test circuits ? ? v en1 en2 v in v ss v out1 v out2 v a v a c l =1uf ( ceramic ) c l =1uf ( ceramic ) i out1 i out2 c in =0.1uf ( ceramic ) ? ? ? ? ? ? circuit ? ? circuit ? ? circuit ? www.datasheet.co.kr datasheet pdf - http://www..net/
11/24 XC6421 series typical performance characteristics ? (1)outputvoltage vs. outputcurrent XC6421(v out =1.2v) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0 50 100 150 200 250 300 350 400 450 500 outputcurrent : i out (ma) outputvoltage : v out (v) ta=85 ta=25 ta=-40 v in =2.2v, c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =1.2v) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0 50 100 150 200 250 300 350 400 450 500 outputcurrent : i out (ma) outputvoltage : v out (v) vin=1.6v vin=2.2v vin=2.7v vin=5.5v XC6421(v out =1.8v) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 50 100 150 200 250 300 350 400 450 500 outputcurrent : i out (ma) outputvoltage : v out (v) vin=1.9v vin=2.3v vin=2.8v vin=3.3v vin=5.5v XC6421(v out =1.8v) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 50 100 150 200 250 300 350 400 450 500 outputcurrent : i out (ma) outputvoltage : v out (v) ta=85 ta=25 ta=-40 v in =2.8v, c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =2.5v) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 50 100 150 200 250 300 350 400 450 500 outputcurrent : i out (ma) outputvoltage : v out (v) vin=2.6v vin=3v vin=3.5v vin=4v vin=5.5v XC6421(v out =2.5v) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 50 100 150 200 250 300 350 400 450 500 outputcurrent : i out (ma) outputvoltage : v out (v) ta=85 ta=25 ta=-40 v in =3.5v, c in =1.0f(ceramic), c l =1.0f(ceramic) ta=25 c in =1.0f(ceramic), c l =1.0f(ceramic) ta=25 c in =1.0f(ceramic), c l =1.0f(ceramic) ta=25 c in =1.0f(ceramic), c l =1.0f(ceramic) www.datasheet.co.kr datasheet pdf - http://www..net/
12/24 XC6421 series typical performance characteristics (continued) ? (1)outputvoltage vs. outputcurrent (2)outputvoltage vs. inputvoltage XC6421(v out =3.6v) 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0 0 50 100 150 200 250 300 350 400 450 500 outputcurrent : i out (ma) outputvoltage : v out (v) vin=3.7v vin=4.1v vin=4.6v vin=5.1v vin=5.5v XC6421(v out =3.6v) 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0 0 50 100 150 200 250 300 350 400 450 500 outputcurrent : i out (ma) outputvoltage : v out (v) ta=85 ta=25 ta=-40 v in =4.6v, c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =1.2v) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0.0 1.0 2.0 3.0 4.0 5.0 6.0 inputvoltage : v in (v) outputvoltage : v out (v) iout=1ma iout=10ma iout=30ma iout=100ma ta=25 c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =1.8v) 0.0 0.5 1.0 1.5 2.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 inputvoltage : v in (v) outputvoltage : v out (v) iout=1ma iout=10ma iout=30ma iout=100ma ta=25 c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =1.2v) 1.05 1.10 1.15 1.20 1.25 1.30 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 inputvoltage : v in (v) outputvoltage : v out (v) iout=1ma iout=10ma iout=30ma iout=100ma ta=25 c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =1.8v) 1.65 1.70 1.75 1.80 1.85 1.90 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 inputvoltage : v in (v) outputvoltage : v out (v) iout=1ma iout=10ma iout=30ma iout=100ma ta=25 c in =1.0f(ceramic), c l =1.0f(ceramic) ta=25 c in =1.0f(ceramic), c l =1.0f(ceramic) www.datasheet.co.kr datasheet pdf - http://www..net/
13/24 XC6421 series typical performance characteristics (continued) ? (2)outputvoltage vs. inputvoltage (3)dropoutvoltage vs. outputcurrent XC6421(v out =3.6v) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 inputvoltage : v in (v) outputvoltage : v out (v) iout=1ma iout=10ma iout=30ma iout=100ma ta=25 c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =2.5v) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 inputvoltage : v in (v) outputvoltage : v out (v) iout=1ma iout=10ma iout=30ma iout=100ma ta=25 c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =3.6v) 3.45 3.50 3.55 3.60 3.65 3.70 4.0 4.5 5.0 5.5 inputvoltage : v in (v) outputvoltage : v out (v) iout=1ma iout=10ma iout=30ma iout=100ma ta=25 c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =2.5v) 2.35 2.40 2.45 2.50 2.55 2.60 3.0 3.5 4.0 4.5 5.0 5.5 inputvoltage : v in (v) outputvoltage : v out (v) iout=1ma iout=10ma iout=30ma iout=100ma ta=25 c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =1.2v) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0 50 100 150 200 250 300 outputcurrent : i out (ma) dropout voltage : vdif (v) ta=85 ta=25 ta=-40 c in =1.0f(ceramic), c l =1.0f(ceramic) below the minimum operating voltage XC6421(v out =1.8v) 0.0 0.1 0.2 0.3 0.4 0.5 0 50 100 150 200 250 300 outputcurrent : i out (ma) dropout voltage : vdif (v) ta=85 ta=25 ta=-40 c in =1.0f(ceramic), c l =1.0f(ceramic) www.datasheet.co.kr datasheet pdf - http://www..net/
14/24 XC6421 series typical performance characteristics (continued) ? (3)dropoutvoltage vs. outputcurrent (4)supplycurrent vs. inputvoltage XC6421(v out =2.5v) 0.0 0.1 0.2 0.3 0.4 0.5 0 50 100 150 200 250 300 outputcurrent : i out (ma) dropout voltage : vdif (v) ta=85 ta=25 ta=-40 c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =3.6v) 0.0 0.1 0.2 0.3 0.4 0.5 0 50 100 150 200 250 300 outputcurrent : i out (ma) dropout voltage : vdif (v) ta=85 ta=25 ta=-40 c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =1.2v) 0 25 50 75 100 125 150 0123456 inputvoltage : v in (v) supplycurrent : i ss (a) ta=85 ta=25 ta=-40 c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =1.8v) 0 25 50 75 100 125 150 0123456 inputvoltage : v in (v) supplycurrent : i ss (a) ta=85 ta=25 ta=-40 c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =2.5v) 0 25 50 75 100 125 150 0123456 inputvoltage : v in (v) supplycurrent : i ss (a) ta=85 ta=25 ta=-40 c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =3.6v) 0 25 50 75 100 125 150 0123456 inputvoltage : v in (v) supplycurrent : i ss (a) ta=85 ta=25 ta=-40 c in =1.0f(ceramic), c l =1.0f(ceramic) www.datasheet.co.kr datasheet pdf - http://www..net/
15/24 XC6421 series typical performance characteristics (continued) ? (5)outputvoltage vs. ambienttemperature (6)supplycurrent vs. ambienttemperature (7)en threshold voltag e vs. ambienttemperature XC6421(v out =1.2v) 1.10 1.15 1.20 1.25 1.30 -50 -25 0 25 50 75 100 ambienttemperature : ta () outputvoltage : v out (v) iout=1ma iout=10ma iout=30ma iout=100ma v in =2.2v, c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =1.8v) 1.70 1.75 1.80 1.85 1.90 -50 -25 0 25 50 75 100 ambienttemperature : ta () outputvoltage : v out (v) iout=1ma iout=10ma iout=30ma iout=100ma v in =2.8v, c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =3.6v) 3.50 3.55 3.60 3.65 3.70 -50 -25 0 25 50 75 100 ambienttemperature : ta () outputvoltage : v out (v) iout=1ma iout=10ma iout=30ma iout=100ma v in =4.6v, c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421(v out =2.5v) 2.40 2.45 2.50 2.55 2.60 -50 -25 0 25 50 75 100 ambienttemperature : ta () outputvoltage : v out (v) iout=1ma iout=10ma iout=30ma iout=100ma v in =3.5v, c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421 50 60 70 80 90 100 110 120 130 140 150 160 -50 -25 0 25 50 75 100 ambienttemperature : ta () supplycurrent : i ss (a) vout=1.2v vout=1.8v vout=2.5v vout=3.6v v in =v out +1.0v, c in =1.0f(ceramic), c l =1.0f(ceramic) XC6421 0.0 0.2 0.4 0.6 0.8 1.0 1.2 -50 -25 0 25 50 75 100 ambienttemperature : ta () en threshold voltage : v en (v) en"h"level en"l"level c in =1.0f(ceramic), c l =1.0f(ceramic) www.datasheet.co.kr datasheet pdf - http://www..net/
16/24 XC6421 series typical performance characteristics (continued) ? (8)rising response time (9)input transient response XC6421(v out =1.2v) -1.8 -0.8 0.2 1.2 2.2 3.2 4.2 time (100s/div) input voltage : v in (v) 1.17 1.18 1.19 1.20 1.21 1.22 1.23 output voltage : v out (v) iout=0.1ma iout=1ma iout=30ma iout=100ma in p ut volta g e output voltage v in =2.2v?3.2v, tr=tf=5s, ta=25 c in =0.1f(ceramic), cl=1.0f(ceramic) XC6421(v out =1.8v) -1.2 -0.2 0.8 1.8 2.8 3.8 4.8 time (100s/div) input voltage : v in (v) 1.77 1.78 1.79 1.80 1.81 1.82 1.83 output voltage : v out (v) iout=0.1ma iout=1ma iout=30ma iout=100ma in p ut volta g e out p ut volta g e v in =2.8v?3.8v, tr=tf=5s, ta=25 c in =0.1f(ceramic), cl=1.0f(ceramic) XC6421(v out =1.2v) -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 time (40s/div) input voltage : v in (v) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 output voltage : v out (v) iout=0.1ma iout=1ma iout=30ma iout=100ma input voltage output voltage v in =0v2.2v, tr=5s, ta=25 c in =0.1f(ceramic), c l =1.0f(ceramic) XC6421(v out =1.8v) -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 time (40s/div) input voltage : v in (v) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 output voltage : v out (v) iout=0.1ma iout=1ma iout=30ma iout=100ma input voltage output voltage v in =0v2.8v, tr=5s, ta=25 c in =0.1f(ceramic), c l =1.0f(ceramic) XC6421(v out =2.5v) -6.0 -4.0 -2.0 0.0 2.0 4.0 6.0 time (40s/div) input voltage : v in (v) 0.0 1.0 2.0 3.0 4.0 5.0 6.0 output voltage : v out (v) iout=0.1ma iout=1ma iout=30ma iout=100ma input voltage v in =0v3.5v, tr=5s, ta=25 c in =0.1f(ceramic), c l =1.0f(ceramic) output voltage XC6421(v out =3.6v) -6.0 -4.0 -2.0 0.0 2.0 4.0 6.0 time (40s/div) input voltage : v in (v) 0.0 1.0 2.0 3.0 4.0 5.0 6.0 output voltage : v out (v) iout=0.1ma iout=1ma iout=30ma iout=100ma input voltage output voltage v in =0v4.6v, tr=5s, ta=25 c in =0.1f(ceramic), c l =1.0f(ceramic) www.datasheet.co.kr datasheet pdf - http://www..net/
17/24 XC6421 series typical performance characteristics (continued) ? (9)input transient response (10)load transient response XC6421(v out =1.2v) 1.05 1.10 1.15 1.20 1.25 1.30 time (20s/div) output voltage : v out (v) 0 100 200 300 400 500 output current : i out (ma) 100ma 1ma output current output voltage i out =1ma?100ma, tr=tf=0.5s, ta=25 v in =2.2v, c in =c l =1.0f(ceramic) XC6421(v out =1.8v) 1.65 1.70 1.75 1.80 1.85 1.90 time (20s/div) output voltage : v out (v) 0 100 200 300 400 500 output current : i out (ma) 100ma 1ma output current output voltage i out =1ma?100ma, tr=tf=0.5s, ta=25 v in =2.8v, c in =c l =1.0f(ceramic) XC6421(v out =2.5v) -0.5 0.5 1.5 2.5 3.5 4.5 5.5 time (100s/div) input voltage : v in (v) 2.47 2.48 2.49 2.50 2.51 2.52 2.53 output voltage : v out (v) iout=0.1ma iout=1ma iout=30ma iout=100ma in p ut volta g e out p ut volta g e v in =3.5v?4.5v, tr=tf=5s, ta=25 c in =0.1f(ceramic), c l =1.0f(ceramic) XC6421(v out =3.6v) 0.5 1.5 2.5 3.5 4.5 5.5 6.5 time (100s/div) input voltage : v in (v) 3.57 3.58 3.59 3.60 3.61 3.62 3.63 output voltage : v out (v) iout=0.1ma iout=1ma iout=30ma iout=100ma in p ut volta g e out p ut volta g e v in =4.6v?5.5v, tr=tf=5s, ta=25 c in =0.1f(ceramic), c l =1.0f(ceramic) XC6421(v out =1.2v) 0.9 1.0 1.1 1.2 1.3 1.4 time (100s/div) output voltage : v out (v) 0 300 600 900 1200 1500 output current : i out (ma) 300ma 0.1ma output current output voltage i out =0.1ma?300ma, tr=tf=0.5s, ta=25 v in =2.2v, c in =c l =1.0f(ceramic) XC6421(v out =1.8v) 1.5 1.6 1.7 1.8 1.9 2.0 time (100s/div) output voltage : v out (v) 0 300 600 900 1200 1500 output current : i out (ma) 300ma 0.1ma output current output voltage i out =0.1ma?300ma, tr=tf=0.5s, ta=25 v in =2.8v, c in =c l =1.0f(ceramic) www.datasheet.co.kr datasheet pdf - http://www..net/
18/24 XC6421 series typical performance characteristics (continued) ? (10)load transient response (11)en rising respose time XC6421(v out =2.5v) 2.35 2.40 2.45 2.50 2.55 2.60 time (20s/div) output voltage : v out (v) 0 100 200 300 400 500 output current : i out (ma) 100ma 1ma output current output voltage i out =1ma?100ma, tr=tf=0.5s, ta=25 v in =3.5v, c in =c l =1.0f(ceramic) XC6421(v out =3.6v) 3.45 3.50 3.55 3.60 3.65 3.70 time (20s/div) output voltage : v out (v) 0 100 200 300 400 500 output current : i out (ma) 100ma 1ma output current output voltage i out =1ma?100ma, tr=tf=0.5s, ta=25 v in =4.6v, c in =c l =1.0f(ceramic) XC6421(v out =2.5v) 2.2 2.3 2.4 2.5 2.6 2.7 time (100s/div) output voltage : v out (v) 0 300 600 900 1200 1500 output current : i out (ma) 300ma 0.1ma output current output voltage i out =0.1ma?300ma, tr=tf=0.5s, ta=25 v in =3.5v, c in =c l =1.0f(ceramic) XC6421(v out =3.6v) 3.3 3.4 3.5 3.6 3.7 3.8 time (100s/div) output voltage : v out (v) 0 300 600 900 1200 1500 output current : i out (ma) 300ma 0.1ma output current output voltage i out =0.1ma?300ma, tr=tf=0.5s, ta=25 v in =4.6v, c in =c l =1.0f(ceramic) XC6421(v out =1.2v) -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 time (40s/div) en input voltage : v en (v) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 output voltage : v out (v) iout=0.1ma iout=1ma iout=30ma iout=100ma en input voltage output voltage v en =0v2.2v, tr=5s, ta=25 v in =2.2v, c in =c l =1.0f(ceramic) XC6421(v out =1.8v) -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 time (40s/div) en input voltage : v en (v) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 output voltage : v out (v) iout=0.1ma iout=1ma iout=30ma iout=100ma en input voltage output voltage v en =0v2.8v, tr=5s, ta=25 v in =2.8v, c in =c l =1.0f(ceramic) www.datasheet.co.kr datasheet pdf - http://www..net/
19/24 XC6421 series typical performance characteristics (continued) ? (11)en rising respose time (12)ripple rejection rate XC6421(v out =1.2v) 0 20 40 60 80 100 0.1 1 10 100 1000 ripple frequency : f (khz) ripple rejection : rr (db) iout=0.1ma iout=1ma iout=30ma iout=100ma v in =3.0v+0.5v p-pac , ta=25 c in =0.1f(ceramic), c l =1.0f(ceramic) XC6421(v out =1.8v) 0 20 40 60 80 100 0.1 1 10 100 1000 ripple frequency : f (khz) ripple rejection : rr (db) iout=0.1ma iout=1ma iout=30ma iout=100ma v in =3.0v+0.5v p-pac , ta=25 c in =0.1f(ceramic), c l =1.0f(ceramic) XC6421(v out =2.5v) 0 20 40 60 80 100 0.1 1 10 100 1000 ripple frequency : f (khz) ripple rejection : rr (db) iout=0.1ma iout=1ma iout=30ma iout=100ma v in =3.5v+0.5v p-pac , ta=25 c in =0.1f(ceramic), c l =1.0f(ceramic) XC6421(v out =3.6v) 0 20 40 60 80 100 0.1 1 10 100 1000 ripple frequency : f (khz) ripple rejection : rr (db) iout=0.1ma iout=1ma iout=30ma iout=100ma v in =4.6v+0.5v p-pac , ta=25 c in =0.1f(ceramic), c l =1.0f(ceramic) XC6421(v out =2.5v) -6.0 -4.0 -2.0 0.0 2.0 4.0 6.0 time (40s/div) en input voltage : v en (v) 0.0 1.0 2.0 3.0 4.0 5.0 6.0 output voltage : v out (v) iout=0.1ma iout=1ma iout=30ma iout=100ma en input voltage output voltage v en =0v3.5v, tr=5s, ta=25 v in =3.5v, c in =c l =1.0f(ceramic) XC6421(v out =3.6v) -6.0 -4.0 -2.0 0.0 2.0 4.0 6.0 time (40s/div) en input voltage : v en (v) 0.0 1.0 2.0 3.0 4.0 5.0 6.0 output voltage : v out (v) iout=0.1ma iout=1ma iout=30ma iout=100ma en input voltage output voltage v en =0v4.6v, tr=5s, ta=25 v in =4.6v, c in =c l =1.0f(ceramic) www.datasheet.co.kr datasheet pdf - http://www..net/
20/24 XC6421 series typical performance characteristics (continued) ? (13)inrush current response (14)cross talk XC6421(v out1 =1.8v, v out2 =1.8v) 1.65 1.70 1.75 1.80 1.85 1.90 time [100us/div] output voltage(vr1)v out (v) 0 100 200 300 400 500 output current(vr2)i out (ma) i out1 =30ma, i out2 =1ma?150ma, tr=tf=0.5s, ta=25 v in =2.8v, c in =c l1 =c l2 =1.0f(ceramic) output current vr2 : 1ma?150ma) output voltage(vr1 : 30ma) XC6421(v out1 =3.6v, v out2 =3.6v) 3.45 3.50 3.55 3.60 3.65 3.70 time [100us/div] output voltage (vr1)v out (v) 0 100 200 300 400 500 output current (vr2)i out (ma) i out1 =30ma, i out2 =1ma?150ma, tr=tf=0.5s, ta=25 v in =4.6v, c in =c l1 =c l2 =1.0f(ceramic) output current vr2 : 1ma?150ma) output voltage(vr1 : 30ma) XC6421(v out =1.2v) -4.0 -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 4.0 time [10us/div] voltage [v] 0 50 100 150 200 250 300 350 400 rush current:i rush [ma] v in =2.2v, tr=tf=5s, ta=25 v en =0vv in , c in =c l =1.0f(ceramic) en input voltage output voltage rush current XC6421(v out =1.8v) -4.0 -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 4.0 time [10us/div] voltage [v] 0 50 100 150 200 250 300 350 400 rush current : i rush [ma] v in =2.8v, tr=tf=5s, ta=25 v en =0vv in , c in =c l =1.0f(ceramic) en input voltage output voltage rush current XC6421(v out =2.5v) -5.0 -4.0 -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 4.0 5.0 time [20us/div] voltage [v] 0 50 100 150 200 250 300 350 400 450 500 rush current : i rush [ma] v in =3.5v, tr=tf=5s, ta=25 v en =0vv in , c in =c l =1.0f(ceramic) en input voltage output voltage rush current XC6421(v out =3.6v) -5.0 -4.0 -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 4.0 5.0 time [20us/div] voltage [v] 0 50 100 150 200 250 300 350 400 450 500 rush current : i rush [ma] v in =4.6v, tr=tf=5s, ta=25 v en =0vv in , c in =c l =1.0f(ceramic) en input voltage output voltage rush current www.datasheet.co.kr datasheet pdf - http://www..net/
21/24 XC6421 series packaging information ? usp-6c ? usp-6c ? reference metal mask design ? ? usp-6c ? reference pattern layout ? ? 0.225 0.5 0.5 0.25 1.8 0.25 0.25 1.4 1.2 0.6 0.25 0.25 0.25 0.225 0.5 0.5 www.datasheet.co.kr datasheet pdf - http://www..net/
22/24 XC6421 series packaging information (continued) ? ? usp-6c power dissipation board mount (tj max = 125 ? ) ambient temperature power dissipation pd mw thermal resistance ( /w) 25 1000 85 400 100.00 pd-ta? 0 200 400 600 800 1000 1200 25 45 65 85 105 125 x?ta S?p?pdmw power dissipation data for the usp-6c is shown in this page. the value of power dissipation varies with the mount board conditions. please use this data as one of referenc e data taken in the described condition. 1. measurement condit ion (reference data) condition: mount on a board ambient: natural convection soldering: lead (pb) free board: dimensions 40 x 40 mm (1600 mm 2 in one side) copper (cu) traces occupy 50% of the board area in top and back faces package heat-sink is tied to the copper traces material: glass epoxy (fr-4) thickness: 1.6 mm through-hole: 4 x 0.8 diameter evaluation board (unit: mm) 2. power dissipation vs. ambient temperature pd vs. ta ambient temperature: ta ( ? ) power dissipation: pd (mw) www.datasheet.co.kr datasheet pdf - http://www..net/
23/24 XC6421 series marking rule ? represents product series ?? represents output voltage ex.) ?? represents production lot number 01 to 09, 0a to 0z, 11 to 9z, a1 to a9, aa to z9, za to zz in order. (g, i, j, o, q, w excluded. no character inversion used.) mark product series r XC6421******-g mark product series 0 1 XC6421**01**-g ? usp-6c 1 2 3 6 5 4 usp-6c www.datasheet.co.kr datasheet pdf - http://www..net/
24/24 XC6421 series 1. the products and product specifications cont ained herein are subject to change without notice to improve performance characteristic s. consult us, or our representatives before use, to confirm that the informat ion in this datasheet is up to date. 2. we assume no responsibility for any infri ngement of patents, pat ent rights, or other rights arising from the use of any information and circuitry in this datasheet. 3. please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this datasheet. 4. the products in this datasheet are not devel oped, designed, or approved for use with such equipment whose failure of malfuncti on can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. atomic energy; aerospace; transpor t; combustion and associated safety equipment thereof.) 5. please use the products listed in this datasheet within the specified ranges. should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. we assume no responsibility for damage or loss due to abnormal use. 7. all rights reserved. no part of this dat asheet may be copied or reproduced without the prior permission of torex semiconductor ltd. www.datasheet.co.kr datasheet pdf - http://www..net/

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