cystech electronics corp. spec. no. : c502n3 issued date : 2011.07.12 revised date : 2013.10.23 page no. : 1/ 8 TL431RN3 cystek product specification adjustable precision shunt regulators TL431RN3 so t -23 description the TL431RN3 series are three-terminal adjustable regulat ors with guaranteed thermal stability over applicable temperature range. the output voltage may be set to any value between v ref (approximately 2.500 volts) and 36 volts with two external resistors. these devices have a typical dynamic output impedance of 0.2 . active output circuitry provides a very sharp turn-on characteristic, ma king these devices excellent replacement for zener diodes in many applications. features ? programmable output voltage ? temperature coefficient is 20ppm/ c typical ? temperature compensated for operation over full temperature range ? low output noise voltage ? fast turn on response ? heat resistance, soldering iron : 300 c, 5 seconds ? pb-free package classification rank a b c v ref 2.500 0.5% 2.500 1% 2.500 2% ordering information device package shipping TL431RN3- x - t1 - g sot-23 (pb-free lead plating and halogen-free package) 3000 pcs / tape & reel environment friendly grade : s for rohs compliant products, g for rohs compliant and green compound products packing spec, t1 : 3000 pc s / tape & reel, 7? reel product rank, zero for no rank products product name
cystech electronics corp. spec. no. : c502n3 issued date : 2011.07.12 revised date : 2013.10.23 page no. : 2/ 8 TL431RN3 cystek product specification absolute maximum ratings (operating temperature range applies unless otherwise specified) characteristics symbol value unit cathode voltage v ka 37 v cathode current range (continuous) i k -100~+150 ma reference input current range i ref 0.05~+10 ma power dissipation p d 300 mw operating temperature range t opr -40~+125 c junction temperature range tj -40~+150 c storage temperature range t stg -65~+150 c functional block diagram & symbol test circuits functional block diagram : symbol : fig1. test circuit for v z =v ref r1 i i v z in i ref i z r2 v ref fig 2. test circuit for v z >v ref note : v z =v ref (1+r 1 /r 2 )+i ref xr 1 in v z fig3. test circuit for off-state current i z v ref i ref i i v z in anode reference - + v ref cathode anode reference cathode
cystech electronics corp. spec. no. : c502n3 issued date : 2011.07.12 revised date : 2013.10.23 page no. : 3/ 8 TL431RN3 cystek product specification electrical characteristics ( ta=25 c unless otherwise specified ) characteristics symbol test conditions min typ max unit a-rank 2.488 2.500 2.513 b-rank 2.475 2.500 2.525 reference input voltage c-rank v ref v ka =v ref , i k =10ma 2.450 2.500 2.550 v deviation of reference input voltage over-temperature v ref(dev) v ka =v ref , i k =10ma t min t a t max - 4 17 mv i k =10ma, v ka =10v-v ref - -1.4 -2.7 mv/v ratio of change in reference input voltage to the change in cathode voltage v ref / v ka i k =10ma, k ka =36v-10v - -1.0 -2.0 mv/v reference input current i ref i k =10ma, r 1 =10k , r 2 = - 2 4 a deviation of reference input current over full temperature range i ref(dev) i k =10ma, r 1 =10k , r 2 = , t a =full range - 0.4 1.2 a minimum cathode current for regulation i k(min) v ka =v ref - 0.34 1.0 ma off-state cathode current i k(off) v ka =36v, v ref =0 - 0.1 1.0 a v ka =v ref , f 1.0khz dynamic impedance z ka - 0.2 0.5 i k =1 to 100ma recommended soldering footprint
cystech electronics corp. spec. no. : c502n3 issued date : 2011.07.12 revised date : 2013.10.23 page no. : 4/ 8 TL431RN3 cystek product specification characteristic curves cathode current vs cathode voltage -100 -75 -50 -25 0 25 50 75 100 125 150 -2 -1 0 1 2 3 v ak - cathode voltage (v) i k - cothode current (ma) cathode current vs cathode voltage -200 -100 0 100 200 300 400 500 600 700 800 -1 -0.5 0 0.5 1 1.5 2 2.5 3 v ak - cathode voltage (v) i k - cothode current (ua) reference input voltage vs ambient temperature 2.48 2.485 2.49 2.495 2.5 2.505 2.51 2.515 2.52 -50 -25 0 25 50 75 100 125 ambient temperature( ) vref - reference input voltage (mv) reference input current vs ambient temperature 0 50 100 150 200 250 300 350 0 25 50 75 100 125 ambient temperature( ) vref - reference input current (na)
cystech electronics corp. spec. no. : c502n3 issued date : 2011.07.12 revised date : 2013.10.23 page no. : 5/ 8 TL431RN3 cystek product specification characteristic curves(cont.) cathode voltage vs reference input voltage -30 -25 -20 -15 -10 -5 0 0 5 10 15 20 25 30 35 40 v ka - cathode voltage (v) vref - reference input voltage (mv) dynamic impedance vs frequence 0.1 1 10 100 1 10 100 1000 f - frequence (khz) z ka - dynamic impedance () open-loop voltage gain vs frequency 0 10 20 30 40 1 10 100 1000 f - frequency (khz) open-loop voltage gain (db) power derating curve 0 50 100 150 200 250 300 350 0 50 100 150 200 ambient temperature---ta() power dissipation---p d (mw)
cystech electronics corp. spec. no. : c502n3 issued date : 2011.07.12 revised date : 2013.10.23 page no. : 6/ 8 TL431RN3 cystek product specification reel dimension carrier tape dimension
cystech electronics corp. spec. no. : c502n3 issued date : 2011.07.12 revised date : 2013.10.23 page no. : 7/ 8 TL431RN3 cystek product specification recommended wave soldering condition soldering time product peak temperature pb-free devices 260 +0/-5 c 5 +1/-1 seconds recommended temperature profile for ir reflow profile feature sn-pb eutectic assembly pb-free assembly average ramp-up rate (tsmax to tp) 3 c/second max. 3 c/second max. preheat ? temperature min(t s min) ? temperature max(t s max) 100 c 150 c 60-120 seconds 150 c 200 c 60-180 seconds ? time(ts min to ts max ) time maintained above: ? temperature (t l ) ? time (t l ) 183 c 60-150 seconds 217 c 60-150 seconds peak temperature(t p ) 240 +0/-5 c 260 +0/-5 c time within 5 c of actual peak temperature(tp) 10-30 seconds 20-40 seconds ramp down rate 6 c/second max. 6 c/second max. time 25 c to peak temperature 6 minutes max. 8 minutes max. note : all temperatures refer to topside of t he package, measured on the package body surface.
cystech electronics corp. spec. no. : c502n3 issued date : 2011.07.12 revised date : 2013.10.23 page no. : 8/ 8 TL431RN3 cystek product specification sot-23 dimension inches millimeters marking: 431r 3-lead sot-23 plastic surface mounted package cystek package code: n3 style: pin 1.cathode 2.reference 3.anode inches millimeters dim min. max. min. max. dim min. max. min. max. a 0.1102 0.1204 2.80 3.04 j 0.0032 0.0079 0.08 0.20 b 0.0472 0.0669 1.20 1.70 k 0. 0118 0.0266 0.30 0.67 c 0.0335 0.0512 0.89 1.30 l 0.0335 0.0453 0.85 1.15 d 0.0118 0.0197 0.30 0.50 s 0.0830 0.1161 2.10 2.95 g 0.0669 0.0910 1.70 2.30 v 0.0098 0.0256 0.25 0.65 h 0.0000 0.0040 0.00 0.10 l1 0. 0118 0.0197 0.30 0.50 notes: 1.controlling dimension: millimeters. 2.maximum lead thickness includes lead finish thickness, and minimum lead thickness is the minimum thickness of base material. 3.if there is any question with packing specification or packing method, please contact your local cyctek sales office. material: ? lead: pure tin plated. ? mold compound: epoxy resin family, flammability solid burning class: ul94v-0. important notice: ? all rights are reserved. reproduction in whole or in part is prohibited without the prior written approval of cystek. ? cystek reserves the right to make changes to its products without notice. ? cystek semiconductor products are not warranted to be suitable for use in life-support applications, or systems. ? cystek assumes no liability for any consequence of customer pr oduct design, infringement of pat ents, or application assistance .
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