unisonic technologies co., ltd lr9203 preliminary cmos ic www.unisonic.com.tw 1 of 9 copyright ? 2016 unisonic technologies co., ltd qw-r102-082.a c l capacitor-less 500ma low power consumption high speed ldo regulator ? description the utc lr9203 is a cmos-based low dropout regulator with high output voltage accuracy, low dropout, high psrr and low quiescent current. the devices c an provide stable output voltages even without a load capacitor c l . the c l capacitor-less is possible because phase compensation is carried out internally unlike other ldos where it is done externally. since the output capac itor and noise bypass capacitor are able to be reduced, so saving the board design space. when a c l capacitor is used, the ic can discharge the electric charge stored at the out put capacitor through the internal switch while in standby state, and as a result the v out quickly returns to the v ss level. ? features * maximum output current: 500ma * output accuracy: 1.0% (2.0 v~5.0v), 20mv (1.2v~1.95v) * output voltage range: 1.2v ~5.0v (0.05v increments) * protection current: current limiter (630ma typ.), short-circuit protection, thermal shutdown * dropout voltage: 190mv @ v out =2.8v, i out =300ma * low power consumption: 15 a (typ.), 0.1 a (in standby) * high psrr: 55db @ 1khz, v out =2.8v * operating ambient tem perature: -40c~+85c * c l capacitor-less: internal phase compensation ? ordering information ordering number package packing LR9203XG-XX-AF5-R sot-25 tape reel note: xx: output voltage, refer to marki ng information.
lr9203 preliminary cmos ic unisonic technologies co., ltd 2 of 9 www.unisonic.com.tw qw-r102-082.a ? marking package voltage code marking sot-25 see voltage chart ? pin configuration 123 54 v in v ss ce v out nc ? pin description pin no. pin name description 1 v in input pin 2 v ss ground pin 3 ce chip enable pin (?h? enable, ?l? or nc disable) 4 nc no connection 5 v out output pin
lr9203 preliminary cmos ic unisonic technologies co., ltd 3 of 9 www.unisonic.com.tw qw-r102-082.a ? block diagram
lr9203 preliminary cmos ic unisonic technologies co., ltd 4 of 9 www.unisonic.com.tw qw-r102-082.a ? absolute maximum rating parameter symbol ratings unit input voltage v in 6.5 v ce input voltage v ce 6.5 v power dissipation 250 mw power dissipation (note 2) (pcb mounted) p d 600 mw operating ambient temperature t opr 40 ~ +85 c storage temperature t stg -55 ~ +125 c notes: 1. absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. 2. pd > (v in -v out )i out . 3. the power dissipation measured with the test board condition is listed as reference data. ? electrical characteristics (t a =25c, unless otherwise specified) parameter symbol test condit ions circuits min typ max unit utc lr9203d type 2.0v>v out (t) (note 3), v ce =v in , i out =10ma -0.02 (note 4) +0.02 (note 4) output voltage v out (e) (note 2) 2.0v v out (t) , v ce =v in , i out =10ma 1 0.99 (note 4) v out(t) 1.01 (note 4) v maximum output current i outmax v ce =v in 1 500 ma load regulation ? v out v ce =v in , 0.1ma i out 300ma 1 20 50 mv dropout voltage (note 5) v d v ce =v in , i out =300ma 1 e-1 (note 8) mv supply current i ss v in =v ce =6.0v, i out =0ma 2 15 30 a stand-by current i stb v in =6.0v, v ce =v ss 2 0.01 0.1 a line regulation ? v out / ( ? v in v out ) v out (t) +0.5v v in 6.0v, v ce =v in , i out =30ma 1 e-2 (note 9) %/v input voltage v in 1 6.0 v output voltage temperature characteristics ? v out / ( ? t opr v out ) v ce =v in , i out =30ma, -40c topr 85c 1 30 ppm/c v out (t) 4.75v, v in ={v out (t) +1.0} v dc +0.5vp-p ac , v ce =v in , i out =30ma, f=1khz power supply rejection ratio psrr v out (t) 4.80v, v in =5.75v dc +0.5vp-p ac , v ce =v in , i out =30ma, f=1khz 3 55 db current limit i lim v ce =v in 1 510 630 750 ma short-circuit current i short v ce =v in , short v out to v ss level 1 120 210 ma ce high level voltage v ceh 1 1.0 6.0 v ce low level voltage v cel 1 0.3 v ce high level current i ceh v in =v ce =6.0v 1 3.5 6 10 a ce low level current i cel v ce =v ss 1 -0.1 0.1 a cl discharge resistance (note 10) r dchg v in =6.0v, v out =5.0v, v ce =v ss 1 600 ? thermal shutdown detect temperature t tsd junction temperature 150 c thermal shutdown hysteresis width t hys t tsd -t tsr 25 c
lr9203 preliminary cmos ic unisonic technologies co., ltd 5 of 9 www.unisonic.com.tw qw-r102-082.a ? electrical characteristics (cont.) parameter symbol test condit ions circuits min typ max unit utc lr9203p type 2.0v>v out (t) (note 3), i out =10ma -0.02 (note 4) v out(t) +0.02 (note 4) v output voltage v out (e) (note 2) 2.0v v out (t) , i out =10ma 1 0.99 (note 4) 1.01 (note 4) maximum outpu t current i outmax 1 500 ma load regulation ? v out 0.1ma i out 300ma 1 20 50 mv dropout voltage (note 5) v d i out =300ma 1 e-1 (note 8) mv supply current i ss v in =6.0v, i out =0ma 2 15 30 a line regulation ? v out / ( ? v in v out ) v out (t) +0.5v v in 6.0v, i out =30ma 1 e-2 (note 9) %/v input voltage v in 1 6.0 v output voltage temperature characteristics ? v out / ( ? t opr v out ) i out =30ma, -40c t opr 85c 1 30 ppm/c v out (t) 4.75v, v in ={v out (t) +1.0} v dc +0.5vp-p ac , i out =30ma, f=1khz 3 55 db power supply rejection ratio psrr v out (t) 4.80v, v in =5.75v dc +0.5vp-p ac , i out =30ma, f=1khz current limit i lim 1 510 630 750 ma short-circuit current i short short v out to v ss level 1 120 210 ma thermal shutdown detect temperature t tsd junction temperature 150 c thermal shutdown hysteresis width t hys t tsd -t tsr 25 c notes: 1. unless otherwise stated regarding input voltage conditions, v in =v out (t) (note 3)+1.0v. 2. v out (e) : effective output voltage (i.e . the output voltage when ?v out (t) +1.0v? is provided at the v in pin while maintaining a certain i out value.) 3. v out (t) : nominal output voltage. 4. characteristics of the actual v out (e) by setting output voltage is shown in the voltage chart. 5. v d =v in1 (note 7)-v out1 (note 6) 6. v out1 is a voltage equal to 98% of the out put voltage whenever an amply stabilized i out {v out (t) +1.0v} is input. 7. v in1 is an input voltage when v out1 appears at the v out pin while the input voltage is gradually decreased. 8. e-1: dropout voltage (refer to voltage chart.) 9. e-2: line regulation (refer to voltage chart.) 10. this function is built in the utc lr9203d series only. the utc lr9203p series discharges by only r1+r2 resistors as shown in the block diagrams.
lr9203 preliminary cmos ic unisonic technologies co., ltd 6 of 9 www.unisonic.com.tw qw-r102-082.a ? voltage chart e-0 e-1 e-2 nominal voltage (v) output voltage (v) dropout voltage (mv) line regulation (%/v) v out (e) v d ? v out /( ? v in v out ) v out (t) code min. max. typ. max. typ. max. 1.200 12 1.1800 1.220 0 555 700 0.1 0.35 1.250 1c 1.2300 1.2700 1.300 13 1.2800 1.3200 0.3 1.350 1d 1.3300 1.3700 1.400 14 1.3800 1.4200 440 600 1.450 1e 1.4300 1.4700 1.500 15 1.4800 1.5200 1.550 1f 1.5300 1.5700 1.600 16 1.5800 1.6200 360 450 1.650 1g 1.6300 1.6700 1.700 17 1.6800 1.7200 1.750 1h 1.7300 1.7700 1.800 18 1.7800 1.8200 300 390 1.850 1j 1.8300 1.8700 1.900 19 1.8800 1.9200 1.950 1k 1.9300 1.9700 2.000 20 1.9800 2.0200 265 330 2.050 2a 2.0295 2.0705 2.100 21 2.0790 2.1210 2.150 2b 2.1285 2.1715 2.200 22 2.1780 2.2220 240 310 2.250 2c 2.2275 2.2725 2.300 23 2.2770 2.3230 2.350 2d 2.3265 2.3735 2.400 24 2.3760 2.4240 2.450 2e 2.4255 2.4745 2.500 25 2.4750 2.5250 210 270 2.550 2f 2.5245 2.5755 2.600 26 2.5740 2.6260 2.650 2g 2.6235 2.6765 2.700 27 2.6730 2.7270 2.750 2h 2.7225 2.7775 2.800 28 2.7720 2.8280 190 250 2.850 2j 2.8215 2.8785 2.900 29 2.8710 2.9290 2.950 2k 2.9205 2.9795 3.000 30 2.9700 3.0300 3.050 0a 3.0195 3.0805 3.100 31 3.0690 3.1310 3.150 3b 3.1185 3. 1815 190 250 0.1 0.3 3.200 32 3.1680 3.2320 170 230 3.250 3c 3.2175 3.2825 3.300 33 3.2670 3.3330 3.350 3d 3.3165 3.3835 3.400 34 3.3660 3.4340 3.450 3e 3.4155 3.4845
lr9203 preliminary cmos ic unisonic technologies co., ltd 7 of 9 www.unisonic.com.tw qw-r102-082.a ? voltage chart (cont.) e-0 e-1 e-2 nominal voltage (v) output voltage (v) dropout voltage (mv) line regulation (%/v) v out (e) v d ? v out /( ? v in v out ) v out (t) code min. max. typ. max. typ. max. 3.500 35 3.4650 3.5350 3.550 3f 3.5145 3.5855 3.600 36 3.5640 3.6360 155 210 3.650 3g 3.6135 3.6865 3.700 37 3.6630 3.7370 3.750 3h 3.7125 3.7875 3.800 38 3.7620 3.8380 3.850 3j 3.8115 3.8885 3.900 39 3.8610 3.9390 3.950 3k 3.9105 3.9895 4.000 40 3.9600 4.0400 4.050 4a 4.0095 4.0905 4.100 41 4.0590 4.1410 4.150 4b 4.1085 4.1915 4.200 44 4.1580 4.2420 140 195 4.250 4c 4.2075 4.2925 4.300 43 4.2570 4.3430 4.350 4d 4.3065 4.3935 4.400 44 4.3560 4.4440 4.450 4e 4.4055 4.4945 4.500 45 4.4550 4.5450 4.550 4f 4.5045 4.5955 4.600 46 4.5540 4.6460 4.650 4g 4.6035 4.6965 4.700 47 4.6530 4.7470 4.750 4h 4.7025 4.7975 4.800 48 4.7520 4.8480 4.850 4j 4.8015 4.8985 4.900 49 4.8510 4.9490 4.950 4k 4.9005 4.9995 5.000 50 4.9500 5.0500
lr9203 preliminary cmos ic unisonic technologies co., ltd 8 of 9 www.unisonic.com.tw qw-r102-082.a ? test circuit v a v a v c in =0.1 f (ceramic) i out v out ce v in v ss circuit 1 v v out ce v in v ss circuit 2 a v out ce v in v ss circuit 3 a v i out note for the utc lr9203p series, ce pin is connected to the v in internally. v
lr9203 preliminary cmos ic unisonic technologies co., ltd 9 of 9 www.unisonic.com.tw qw-r102-082.a ? typical application circuit 5 4 3 2 1 v in ce c in : 0.1 f (ceramic) v ss v out nc c l : 0.1 f (ceramic) utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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