leshan radio company, ltd. LR432A the lrc LR432A is a three-terminal adjustable regulator with a guaranteed thermal stability over applicable temperature (approximately 1.24v) and 18v with two external resistors. it provides very wide applications,including shunt regulator,series regulator,switching regulator,voltage reference and others. 3 5 2 * 5 $ 0 0 $ % / ( 3 5 ( & , 6 , 2 1 5 ( ) ( 5 ( 1 & ( linear integrated circuit features: ? precise reference voltage to 1.24v ? guaranteed 1% reference voltage tolerance ? sink current capability, 80 a to100ma ? quick turn-on ? adjustable output voltage, v o =v ref to 18v ? 0.2 ? typical output impedance we declare that the material of product is rohs compliant and does not contain any , cl r b , and sb203 description 1/4 ranges.the output voltage may be set to any value between linear integrated circuit v ref LR432A 7 2 7 2 5 h i $ q r g h & d w k r g h 3 1 2
1/ 6 2/4 absolute maximum ratings symbol parameter rating unit v ka i k continuous cathode current range 100 ma i ref reference current range 3 ma electrical characteristics t a = 25c ( unless otherwise noted) LR432A symbol parameter test conditions min typ max unit v ref reference voltage v ka = v ref , l k =10ma (fig. 1) t a =25c v v dev v ref temp deviation t a =full range(see note1) v ka = v ref , l k =10ma(fig. 1) 10 25 mv ? v ref / ? v ka ratio of change in v ref to change in cathode voltage ! k =10ma, v ka =18v to v ref (fig. 2) -1 -2.7 mv / v i ref reference input current i k =10ma, r 1 =10k ? r 2 = (fig.2) a i ref(dev) i ref temp deviation t k =full range (see note 1), r 1 =10k ? , r 2 = , i k =10ma (fig. 2) 0.05 0.3 a ik(off) off-state cathode current v ref =0 v,(fig.3) v k =18v 0.04 0.5 a zka dynamic output impedance v ka =v ref , i k =1ma to 100ma f 1khz (fig. 1) 0.2 0.4 ? i k ( min ) minimum operating current v ka =v ref (fig. 1) 60 80 a cathode voltage 18 v 1.228 1.240 1.252 0.25 0.5 leshan radio company, ltd. t operating ambient temperature - 40 to 105 c opr tj operating junction temperature range 150 c linear integrated circuit linear integrated circuit LR432A
leshan radio company, ltd. 3/4 fig.1 test circuit for vka=vref, vo=vka=vref, co=0.1f fig.2 test circuit for vka>vref, vo=vka =vref(1+r1/r2)+irefr1, co=0.1f fig.3 test circuit for ik(off) linear integrated circuit linear integrated circuit LR432A
leshan radio company, ltd. 4/4 linear integrated circuit linear integrated circuit LR432A d b e a a1 c l d1 e e1 to-92 package outline dimensions symbol a a1 b c d d1 e e e1 min 3.300 1.100 0.380 0.360 4.400 3.430 4.300 2.440 14.100 0.000 max 3.700 1.400 0.550 0.510 4.700 4.700 2.640 14.500 1.600 0.380 min 0.130 0.043 0.015 0.014 0.173 0.135 0.169 0.096 0.555 0.000 max 0.146 0.055 0.022 0.020 0.185 0.185 0.104 0.571 0.063 0.015 dimensions in millimeters dimensions in inches 0.050typ 1.270typ ? ?
|
