ka723/i precision voltage regulator precision voltage regulator the ka723/i are monolithic integrated circuit voltage regulators featuring high ripple rejection, excellent output and load regulation, excellent temperature stability, and low standby current. the ka723/i are also useful in a wide range of other applications such as a shunt regulator, a current regulator or a temperature controller. the ka723 is characteristic for operation on from 0 & to 70 & , and the KA723I from -25 & to +85 & . features positive or negative supply operation. 0.01% line and load regulation output voltage adjustable from 2 to 37 volts. output current to 150ma without external pass transistor block diagram ordering information device package operating temperature ka723 14 dip ka723d 14 sop KA723I 14 dip KA723Id 14 sop 1 0 ~ +70 & -25 ~ +85 & schematic diagram 14 dip 14 sop ?1999 fairchild semiconductor corporation rev. b
ka723/i precision voltage regulator absolute maximum ratings electrical characteristics (unless otherwise specified, t a = 25, & , v i = v cc = 12v, v o = + 5v, i l =1 .0ma, r sc = 0, c i = 100pf, c ref =0 and devider impedance as seen by error amplifier 10k ? connected as shown in figure 3) e note: t min = 0 & for ka723 t max = 70 & for ka723 = -25 & for KA723I = 85 & for KA723I characteristic symbol value unit pulse voltage from v + to v - (50ms) v i(p) 50 v peak continuous voltage from v + to v - v i 40 v input-output voltage differential v i - v o 40 v maximum output current i o 150 ma differential input voltage v id 5 v voltage between non-inverting input and v v ie 8v current from v z i z 25 ma current from v ref i ref 15 ma power dissipation p d 1000 m/w ka723 0 ~ +70 & KA723I -25 ~ +85 & storage temperature range t stg -65 ~ + 150 & characteristic symbol test conditions min typ max unit v i = 12v to 15v v i = 12v to 40v 0.01 0.1 0.1 0.5 t min t a t max v i = 12v to 15v 0.3 i o = 1ma to 50ma 0.03 0.2 load regulation o v o t min t t max i o = 1 to 50ma 0.6 % f = 100hz to 10khz,c ref =0 74 f = 100hz to 10khz,c ref =5 a f 86 average temperature coefficient of output voltage o v o / o tt min t t max 0.003 0.015 %/ & short circuit current limit i sc r sc = 10 ? , v o = 0 65 ma reference voltage v ref 6.80 7.15 7.50 v f = 100hz to 10khz, c ref = 0 20 f = 100hz to 10khz, c ref =5 a f 2.5 long-term stab ility st 0.1 %/ 1000hr standby current drain i d i l = 0, v i = 30v 2.0 4.0 ma input voltage range v i 9.5 40 v output voltage range v o 2.0 37 v input-output voltage differential v d 3.0 38 v operating temperature range t opr line regulation o v o % ripple rejection rr db output noise voltage v n a v rms
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