utc m2950/2951 linear integrated ci rcuit utc unisonic technologies co., ltd. 1 qw-r102-004,d 250 ma low-dropout voltage regulator description the utc m2950/2951 is a monolithic integrated voltage regulator with low dropout voltage, and low quiescent current. it includes many features that suitable for different applications. available in 3-pin to-92, dip-8 and sop-8 packages. features *high accuracy 2.5, 3.0, 3.3, 3.6 or 5v fixed output for to-92, sop-8 package. *extremely low quiescent current and dropout voltage. *extremely tight load and line regulation. *current and thermal limiting. *very low temperature coefficient. *logic controlled shutdown and error flag available for dip and sop package. *output voltage programmable for dip and sop package. applications *battery powered equipment. *high efficient linear regulator down to 1.24v. *cellular phones. to-92 sop-8 dip-8 1
utc m2950/2951 linear integrated ci rcuit utc unisonic technologies co., ltd. 2 qw-r102-004,d pin configurations 2 1 3 output gnd input utc m2950 to-92 plastic package bottom view 1 2 3 4 8 7 6 5 input feedback 5v tap shutdown sense output utc M2951 gnd error sop-8 or dip-8 package for utc M2951 1 2 3 4 8 7 6 5 input nc nc shutdown nc output utc m2950 gnd error sop-8 or dip-8 package for utc m2950 fig.1
utc m2950/2951 linear integrated ci rcuit utc unisonic technologies co., ltd. 3 qw-r102-004,d block diagram 5 4 6 2 1 8 7 3 60mv 330k ? to cmos or ttl 5v 250ma max. feedback input output sense 5v tap gnd error detecti on comparator error amplifier from cmos or ttl 1.23 ref shut down unragulated dc error 182k ? 60k ? 1.5 f for utc M2951 absolute maximum ratings parameter symbol value unit supply voltage vcc -0.3~+18 v feedback voltage vfeedback -1.5~+18 v shutdown voltage vshutdown -0.3~+18 v comparator output voltage vco -0.3~+18 v storage temperature tstr -65~+150 c operating junction temperature tj -40~+125 c
utc m2950/2951 linear integrated ci rcuit utc unisonic technologies co., ltd. 4 qw-r102-004,d electrical characteristics (tested at tj=25 c, v in =6v, i l =100 a and c l =1 f, unless otherwise specified) parameter part number test condition min. typ. max. unit output voltage utc m2950-2.5 utc m2950-3.0 utc m2950-3.3 utc m2950-3.6 utc m2950-5.0 utc M2951 t j =25 c (note 1) 2.45 2.94 3.23 3.53 4.90 2.5 3.0 3.3 3.6 5.0 2.55 3.06 3.36 3.67 5.10 v utc m2950-2.5 utc m2950-3.0 utc m2950-3.3 utc m2950-3.6 utc m2950-5.0 utc M2951 -25 c<=t j<= <=+85 c (note 1) 2.45 2.94 3.23 3.53 4.90 2.5 3.0 3.3 3.6 5.0 2.55 3.06 3.36 3.67 5.10 v output voltage utc m2950-2.5 utc m2950-3.0 utc m2950-3.3 utc m2950-3.6 utc m2950-5.0 utc M2951 100 a<=i l <=250 ma tj<=tj(max) (note 1) 2.45 2.94 3.23 3.53 4.90 2.5 3.0 3.3 3.6 5.0 2.55 3.06 3.36 3.67 5.10 v output voltage temperature coefficient 20 100 ppm/ c line regulation 6v<=v in <=18v 0.03 0.1 0.2 % load regulation 100 a<=i l <=250 ma 0.04 0.1 0.2 % dropout voltage i l =100 a i l =250ma (note 2) 50 380 80 450 150 600 mv ground current i l =100 a i l =250ma 75 8 120 12 140 22 a ma dropout ground current v in =4.5v,i l =100 a 110 170 200 a current limit vout=0 160 200 300 ma output noise 10hz to 100khz c l =1 f c l =200 f c l =3.3 f (bypass=0.01 f pins 7 to ( utc m 2951)) 260 280 430 160 100 v for M2951 8-pin version only reference voltage 1.22 1.235 1.25 v reference voltage (note 4) 1.19 1.27 v feedback pin bias current 20 40 na reference voltage temperature coefficient 50 ppm/ c feedback bias current temperature coefficient 0.1 na/ c error comparator
utc m2950/2951 linear integrated ci rcuit utc unisonic technologies co., ltd. 5 qw-r102-004,d parameter part number test condition min. typ. max. unit output leakage current v oh =18v 1 a output low voltage v in =4.5v i ol =400 a 250 mv upper threshold voltage (note 3) 3.2 %v o lower threshold voltage (note 3) 7.6 %v o hysteresis (note 3) 15 mv shutdown input input logic voltage low(regulator on) high(regulator off) 2.0 1.3 0.70 v shutdown pin input current v shutdown =2.4v 30 50 a v shutdown =18v 450 600 a regulator output current shutdown vshutdown>=2v,v in <=18v, v out =0, feedback pin tied to 5v tap. 3 10 a note 1: additional conditions for 8-pin versions are feedback tied to 5v tap an output tied to output sense (v out =5v) and vshutdown<=0.8v. note 2:dropout voltage is defined as the input to output differential at which the output voltage drops 100mv below its nominal value measured at 1v differential. note 3:comparator thresholds are expressed in terms of percentage value of voltage output. note 4:vref vout (vin-1v), 2.3v vin 30v, 100 a i l 250ma, t j t jmax
utc m2950/2951 linear integrated ci rcuit utc unisonic technologies co., ltd. 6 qw-r102-004,d application circuit (10 ampere low dropout regulator) +v in fb vout gnd sd error utc M2951 8 5 7 1 4 3 current lim it section +v in =v ou t+0.5v 0.05 ? 470 ? 680 ? 4.7m ? 20k ? 220 ? 0.033 f 47 ? r1 r2 4.7 f 100 f 1% 10k ? 2n3906 + v out 250m a vout=1.23v*(1+r1/r2) f o r 5 v o u tp u t use internal resistors.w ire pin 6 to 7 and wire pin 2 to +v out utc d65h0 fig.2 utc m2950-2.5 utc m2950-3.0 utc m2950-3.3 utc m2950-3.6 utc m2950-5.0 vin vout fig.3
utc m2950/2951 linear integrated ci rcuit utc unisonic technologies co., ltd. 7 qw-r102-004,d typical performance characteristics 1 2 34 56 0 0 1 2 3 4 5 6 fig.4 dropout characteristics input voltage(v) output voltage(v) r l =50k ? r l =20 ? 0 1 2 3 4 5 6 7 8 9 10 11 12 150 160 170 180 190 200 210 220 230 240 250 270 260 280 290 300 fig.5 input current input current(ma) input voltage(v) r l =20 ? 50 60 70 80 90 100 110 120 -75 -50 -25 0 25 50 75 100 125 150 fig. 7 ground pin current quiescent current( ? ) temperature (c) v in =6v i l =100 a -75 -50 -25 0 25 50 75 100 125 150 6 7 8 9 10 temperature (c) fig. 8 ground pin current quiescent current(ma) v in =6v i l =250ma -75 -50 -25 0 25 50 75 100 125 150 230 240 250 260 270 280 290 300 temperature (c) short circuit current(ma) fig. 10 short circuit current -75 -50 -25 0 25 50 75 100 125 150 0 50 100 300 400 500 600 temperature (c) dropout voltage(mv) fig. 6 dropout voltage i l =250ma i l =100 a -75 -50 -25 0 25 50 75 100 125 150 temperature (c) 0.6 0.8 1.0 1.2 1.4 1.6 1.8 fig. 9 shutdown threshold voltage shutdown threshold voltage(v) 100 150 200 250 0 100 200 300 400 500 fig. 11 dropout voltage output current(ma) dropout voltage(mv) 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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