unisonic technologies co., ltd UC723 linear integrated circuit www.unisonic.com.tw 1 of 4 copyright ? 2012 unisonic technologies co., ltd qw-r103-006.b adjustable voltage regulator ? description the utc UC723 is a silicon monolithic integrated circuit, designed for service as voltage regulator at output voltages, ranging from 2v ~ 37v at current up to 150ma. it in cludes a temperature-compensated reference amplifier, an error amplifie r, a power series pass transistor, and a current-limiting circuit. ? features *up to 150ma output current *adjustable output voltage (from 2v ~ 37v) *positive and negative voltage regulation *regulation in excess of 10a with suitable pass transistors *input and output shor t-circuit protection *load and line regulation< 0.03% ? ordering information ordering number package packing lead free halogen free UC723l-d14-t UC723g-d14-t dip-14 tube (1) t: tube (2) d14 : dip-14 (3) g: halogen free, l: lead free UC723l -d14 -t (1)packing type (2)package type (3)lead free
UC723 linear integrated circuit unisonic technologies co., ltd 2 of 4 www.unisonic.com.tw qw-r103-006.b ? block diagram 12 1 8 14 6 5 7 4 3 2 13 9 10 11 v 0 v 2 frequency compensation current limit current sense inverting input v- non- inverting input vref nc nc nc v+ (un regulated input) 6.2v 15k 500 25k 1k 1k 150 20k 300 6.2v 5k 30k 100 5pf
UC723 linear integrated circuit unisonic technologies co., ltd 3 of 4 www.unisonic.com.tw qw-r103-006.b ? absolute maximum ratings (t a =25 c) parameter symbol value unit supply voltage(between v+ and v-) v cc 40 v pulse voltage for 50ms v pulse 50 v differential input- output voltage v d 40 v different input voltage (between inverting and non-inverting inputs) v id 5 v different input voltage (between non-inverting input and v-) v id 8 v current from zener diode terminal i z 25 ma power dissipation p d 900 mw operating temperature t opr 0 ~ 70 c storage temperature t stg -40 ~ 150 c junction temperature t j 125 c note: absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only an d functional device operat ion is not implied. ? electrical characteristics (t a =25 c, v+=v c =v in =12v, v out =5v, i l =1ma, c1=100pf, c ref =0, r scp =0, unless otherwise specified, divider impedance r1*r2 / (r1+r2) at non-inverting input, terminal 5=10k ) parameter symbol test conditions min typ max unit quiescent regulator current i ccq i l =0, v in =30v 2.3 3.5 ma input voltage range v in 9.5 40 v output voltage range v out 2 37 v differential input- output voltage v in -v out 3 38 v reference voltage v ref 6.95 7.15 7.35 v line regulation (note 1) v out v in =12v ~ 40v 0.6 1 %v o v in =12v ~ 15v 0.01 0.1 v in =12v ~ 15v, t a =-55~125 c load regulation (note 1) v out i l =1ma ~ 50ma 0.03 0.15 %v o i l =1ma ~ 50ma, t a =-55 ~ 125 c 0.6 output voltage temperature coefficient v out t a =-55~125 c 0.002 0.015 %/ c ripple rejection (note 2) rr f=50hz ~ 10khz 74 db f=50hz ~ 10khz, c ref =5 f 86 t min UC723 linear integrated circuit unisonic technologies co., ltd 4 of 4 www.unisonic.com.tw qw-r103-006.b ? application circuit 11 12 6 10 2 3 4 13 7 5 v in v out rscp vref r1 r2 r3 c1 0.001 f utc UC723 regulator output voltage=5v line regulation ( v in =3v)=0.5mv load regulation ( i l =1a)=5ma fig. 3 positive voltage regulator circuit (with external p-n-p pass transistor) 11 12 6 10 2 3 4 13 7 5 v in v out rscp c1 100pf utc UC723 regulator output voltage=15v line regulation ( v in =3v)=1.5mv load regulation ( i l =1a)=15ma r2 r1 fig. 4 positive voltage regulator circuit (with external n-p-n pass transistor) utc assumes no responsib ility 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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