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copyright ? anpec electronics corp. rev. b.8 - mar., 2005 apl431l www.anpec.com.tw 1 anpec reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. low voltage adjustable precision shunt regulator features general description applications the apl431l is a 3-terminal low voltage adjustable precision reference with specified thermal stability over applicable commercial temperature ranges. out- put voltage may be set to any value between v ref (1. 24 v) and 20 v with two external resistors (see fig- ure 2). when used with an photocoupler, the apl431l is an ideal voltage reference in isolated feed- back circuits for 3v to 12v switching-mode power supplies. this device has a typical output imped- ance of 0.1 ? . active output circuitry provides a very sharp turn-on characteristic, making the apl431l ex- cellent replacements for zener diodes in many applications, including on-board regulation and ad- justable power supplies. ? ? ? ? ? precise reference voltage to 1.24v ? ? ? ? ? guaranteed 0.5% or 1% reference voltage tolerance ? ? ? ? ? sink current capability, 80ua to 100ma ? ? ? ? ? quick turn-on ? ? ? ? ? adjustable output voltage, v o = v ref to 20v ? ? ? ? ? low operational cathode current, 80a typical ? ? ? ? ? 0.1 ? typical output impedance ? ? ? ? ? sot-23-3, sot-23-5, to-92 and sot-89 packages ? lead free available (rohs compliant) ? ? ? ? ? linear regulators ? ? ? ? ? adjustable power supply ? ? ? ? ? switching power supply symbol functional diagram v ref + _ cathode ref anode sot-23-3 (top view) ref anode cathode 12 3 sot-89 (top view) ref anode cathode 123 ref anode cathode 3 2 1 to-92 (top view) cathode anode ref ref nc cathode nc anode 123 4 5 sot-23-5 (top view)
copyright ? anpec electronics corp. rev. b.8 - mar., 2005 apl431l www.anpec.com.tw 2 symbol parameter rating unit v ka cathode voltage 20 v i k continuous cathode current range 100 ma i ref reference current range 3 ma ja thermal resistance from junction to ambient in free air sot-23-3 sot-23-5 sot-89 to-92 416 357 250 250 c/w t j operating junction temperature range -40 to 150 c t stg storage temperature range -65 to 150 c t sol lead temperature range, t s (soldering, 10sec) 260 c ordering and marking information apl431l elec. grade handling code temp. range package code elec. grade a : 0.5% reference voltage tolerance b : 1% reference voltage tolerance package code a : sot-23-3 b : sot-23-5 d : sot-89 e : to-92 y:chip form temp. range c : 0 to 70 c i : -40 to 85 c handling code pb : plastic bag tb : tape & box tr : tape & reel lead free code l : lead free device blank : original device apl 431l xxxxx xxxxx - date code apl431l e : apl431l d : apl431l xxxxx - date code xxxxx apl431l a/b : 431l lead free code absolute maximum ratings notes anpec lead-free products contain molding compounds/die attach materials and 100% matte in plate termination finish; which are fully compliant with rohs and compatible with both snpb and lead-free soldiering operations. anpec lead-free products meet or exceed the lead-free requirements of ipc/jedec j std-020c for msl classification at lead-free peak reflow temperature.
copyright ? anpec electronics corp. rev. b.8 - mar., 2005 apl431l www.anpec.com.tw 3 electrical characteristics t a = 25c ( unless otherwise noted) apl431l symbol parameter test conditions min. typ. max. unit apl431la 1.234 1.240 1.246 v ka =v ref , i k =10ma t a =25 c, (fig. 1) apl431lb 1.228 1.240 1.252 apl431la 1.222 1.240 1.258 v ref reference voltage t a =full range(see note1), (fig.1) apl431lb 1.215 1.240 1.265 v v def v def temp deviation t a =full range (see note1) v ka =v ref , i k =10ma (fig. 1) 5 15 mv ? v ref / ? v ka ratio of change in v ref to change in cathods votage i k =10ma, v ka =16v to v ref (fig. 2) -0.2 -1.0 mv/v i ref reference input current i k =10ma,r 1 =10k ?, r 2 = (fig. 2) 0.15 0.5 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 v k =6v 0.01 0.1 i k(off) off-state cathode current v ref =0v, (fig. 3) v k =16v 0.01 0.5 a z ka dynamic output impedance v ka =v ref , i k =1ma to 100ma, f 1khz (fig. 1) 0.1 0.4 ? i k(min) minimum operating current v ka =v ref (fig. 1) 80 100 a notes : 1.full temperature range is 0 c to 70 c for apl431lxxc,and -40 c to 85 c for apl431lxxl. test figures figure 1. test circuit for v ka =v ref , v o =v ka =v ref fi g ure 2. test circuit for v ka >v ref , figure 3. test circuit for i k(off) v in v o i k v ref v o v in i k(off)
copyright ? anpec electronics corp. rev. b.8 - mar., 2005 apl431l www.anpec.com.tw 4 test figures (cont.) figure 2. test circuit for v ka >v ref , v o = v ka = v ref (1+r 1 /r 2 ) + i ref r 1 v in i k i ref v ref r1 r2 v o application schematic v o v in 0.1 f r 2 r 1 v ref r b precision voltage reference v o v in 0.1 f r b v ref r 2 r 1 precision high-current series regulator notes for application circuits: 1) to improve the stability of output voltage, a 0.1 f capacitor between cathode and anode of apl431l is strongly recommended. 2)set v out according to the following equation: v out = v ref (1+r1/r2)+l ref r1 3)choose the value for r b as follows: a)the maximum limit for r b should be such that the cathode current(l k ) is greater than the mini mum operating current (80 a) at v in(min) . b)the minimum limit for rb should be such that the cathode current (l k ) does not exceed 100ma under all load conditions, and the instantaneous turnon value for lk does not exceed 150ma. both of the following conditions must. be met: v in(max) 150ma v in(max) -v out l out(min) +100ma (to limit instantaneous turn-on l k ) r b,min (to limit l k under normal operating conditions) r b,min
copyright ? anpec electronics corp. rev. b.8 - mar., 2005 apl431l www.anpec.com.tw 5 -100 -50 0 50 100 -1.5 -1 -0.5 0 0.5 1 1.5 0.08 0.10 0.12 0.14 0.16 0.18 -50-25 0 255075100125150 1.22 1.23 1.24 1.25 1.26 -50 -25 0 25 50 75 100 125 150 -250 -200 -150 -100 -50 0 50 100 150 200 250 -1-0.500.5 11.5 typical characteristics v ka =v ref i ka =10ma cathode voltage (v) cathode current (ma) cathode voltage (v) cathode current ( a) cathode current vs. cathode voltage cathode current vs. cathode voltage junction temperature ( c) reference voltage (v) reference input current ( a) junction temperature ( c) referemce voltage vs. junction temperature reference input current vs. junction temperature t a =25c v ka =v ref t a =25c r 1 =10k ? , r 2 = i ka =10ma
copyright ? anpec electronics corp. rev. b.8 - mar., 2005 apl431l www.anpec.com.tw 6 0 0.1 0.2 0.3 0.4 0.5 -50 -25 0 25 50 75 100 125 150 0s 0 1v 0 5s 3v 0s 5s 0 1v 0 3v -1 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0 -50 -25 0 25 50 75 100 125 150 typical characteristics input junction temperature ( c) ratio of delta reference voltage to delta cathode voltage (-mv/v) junction temperature ( c) off state cathode current ( a) off state cathode current vs. junction temperature ? v ref / ? v ka vs. junction temperature v ref =0v v ka =16v v ka =6v i ka =1ma output input output t a =25c i ka =0.1ma t a =25c ? v ka =v ref to 20v i ka =10ma
copyright ? anpec electronics corp. rev. b.8 - mar., 2005 apl431l www.anpec.com.tw 7 0 10 20 30 40 50 60 70 80 90 100 0.0001 0.001 0.01 0.1 1 -10 0 10 20 30 40 50 60 10 100 1000 10000 100000 1000000 0 50 100 150 200 250 300 350 0.01 0.1 1 10 100 10 100 1000 10000 100000 1000000 typical characteristics frequency (hz) zka ( ? ) frequency (hz) gain (db) phase shift (degree) gain vs. phase shift vs. frequency zka vs. frequency load capacitance ( f) ik (ma) stability boundary conditions v ka =v ref v ka =2.5v v ka =3.3v stable unstable v ka =v ref i ka =10ma t a =25c i ka =10ma t a =25c t a =25c
copyright ? anpec electronics corp. rev. b.8 - mar., 2005 apl431l www.anpec.com.tw 8 sot-23 package information d e h e a a1 l c b 3 2 1 m illim eters inches dim min. max. min. max. a 1.00 1.30 0.039 0.051 a1 0.00 0.10 0.000 0.004 b 0.35 0.51 0.014 0.020 c 0.10 0.25 0.004 0.010 d 2.70 3.10 0.106 0.122 e 1.40 1.80 0.055 0.071 e 1.90/2.1 bsc 0.075/0.083 bsc h 2.40 3.00 0.094 0.118 l 0.37 0.015
copyright ? anpec electronics corp. rev. b.8 - mar., 2005 apl431l www.anpec.com.tw 9 sot-23-5 e1 e1 e b 12 3 4 5 e d a2 a a1 l 2 l l 1 a package information millimeters inches dim min. max. min. max. a 0.95 1.45 0.037 0.057 a1 0.05 0.15 0.002 0.006 a2 0.90 1.30 0.035 0.051 b 0.30 0.50 0.011 0.019 d 2.8 3.00 0.110 0.118 e 2.6 3.00 0.102 0.118 e1 1.5 1.70 0.059 0.067 e 0.95bsc 0.037bsc e1 1.90bsc 0.074bsc l 0.35 0.55 0.014 0.022 l1 0.20 bsc 0.008 bsc l2 0.5 0.7 0.020 0.028 n 5 5 0 10 0 10
copyright ? anpec electronics corp. rev. b.8 - mar., 2005 apl431l www.anpec.com.tw 10 package information b2 l1 q a b l seating plane e1 e j e s d 1 2 3 s to-92 millimeters inches dim min. max. min. max. a 4.318 5.334 0.170 0.210 b 0.406 0.559 0.016 0.022 b2 0.406 0.559 0.016 0.022 d 4.445 5.207 0.175 0.205 e 3.175 4.191 0.125 0.165 e 2.413 2.667 0.095 0.105 e1 1.143 1.397 0.045 0.055 j 3.429 0.135 l 12.70 0.500 l1 1.27 0.050 q2.921 0.115 s 2.032 2.667 0.080 0.105
copyright ? anpec electronics corp. rev. b.8 - mar., 2005 apl431l www.anpec.com.tw 11 d d1 e b1 e1 b 12 3 l h e c a a a sot-89 (reference eiaj ed-7500a reg stration sc-62) millimeters inches dim min. max. min. max. a 1.40 1.60 0.055 0.063 b 0.40 0.56 0.016 0.022 b1 0.35 0.48 0.014 0.019 c 0.35 0.44 0.014 0.017 d 4.40 4.60 0.173 0.181 d1 1.35 1.83 0.053 0.072 e 1.50 bsc 0.059 bsc e1 3.00 bsc 0.118 bsc e 2.29 2.60 0.090 0.102 h 3.75 4.25 0.148 0.167 l 0.80 1.20 0.031 0.047 10 10 package information
copyright ? anpec electronics corp. rev. b.8 - mar., 2005 apl431l www.anpec.com.tw 12 physical specifications t 25 c to peak tp ramp-up t l ramp-down ts preheat tsmax tsmin t l t p 25 temperature time critical zone t l to t p terminal material solder-plated copper (solder material : 90/10 or 63/37 snpb), 100%sn lead solderability meets eia specification rsi86-91, ansi/j-std-002 category 3. reflow condition (ir/convection or vpr reflow) classificatin reflow profiles sn-pb eutectic assembly pb-free assembly profile feature large body small body large body small body average ramp-up rate (t l to t p ) 3 c/second max. 3 c/second max. preheat - temperature min (tsmin) - temperature mix (tsmax) - time (min to max)(ts) 100 c 150 c 60-120 seconds 150 c 200 c 60-180 seconds tsmax to t l - ramp-up rate 3 c/second max tsmax to t l - temperature(t l ) - time (t l ) 183 c 60-150 seconds 217 c 60-150 seconds peak temperature(tp) 225 +0/-5 c 240 +0/-5 c 245 +0/-5 c 250 +0/-5 c time within 5 c of actual peak temperature(tp) 10-30 seconds 10-30 seconds 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 the package. measured on the body surface.
copyright ? anpec electronics corp. rev. b.8 - mar., 2005 apl431l www.anpec.com.tw 13 carrier tape & reel dimensions a j b t2 t1 c t ao e w po p ko bo d1 d f p1 reliability test program test item method description solderability mil-std-883d-2003 245 c, 5 sec holt mil-std-883d-1005.7 1000 hrs bias @125 c pct jesd-22-b,a102 168 hrs, 100 % rh, 121 c tst mil-std-883d-1011.9 -65 c~150 c, 200 cycles esd mil-std-883d-3015.7 vhbm > 2kv, vmm > 200v latch-up jesd 78 10ms, 1 tr > 100ma
copyright ? anpec electronics corp. rev. b.8 - mar., 2005 apl431l www.anpec.com.tw 14 application a b c j t1 t2 w p e 178 1 70 2 13.5 0.15 3 0.15 14 2 1.3 0.3 12 + 0.3 12 - 0.1 8 0.1 1.75 0.1 f d d1 po p1 ao bo ko t sot-89 5.5 0.05 1.5 0.1 1.5 0.1 4.0 0.1 2.0 0.1 4.8 0.1 4.5 0.1 1.80 0.1 0.3 0.013 application a b c j t1 t2 w p e 178 1 60 1.0 12.0 2.5 0.15 9.0 0.5 1.4 8.0+ 0.3 - 0.3 4.0 1.75 f d d1 po p1 ao bo ko t sot-23 3.5 0.05 1.5 +0.1 0.1min 4.0 2.0 0.05 3.1 3.0 1.3 0.2 0.03 application a b c j t1 t2 w p e 178 1 72 1.0 13.0 + 0.2 2.5 0.15 8.4 2 1.5 0.3 8.0 0.3 4 0.1 1.75 0.1 f d d1 po p1 ao bo ko t sot-23-5 3.5 0.05 1.5 0.1 1.5 0.1 4.0 0.1 2.0 0.1 3.15 0.1 3.2 0.1 1.4 0.1 0.2 0.033 application a d d1 d2 f1,f2 h h1 h2 h2a 3.18~12 4.00.2 0.36~0.53 9.0 max 2.5+0.2 -0.1 160.5 90.5 0.5 max 0.5 max h3 h4 l l1 p p1 p2 t t1 27.0 max 20.0 max 11.0 max 2.5 min 12.70.2 6.350.4 50.80.5 0.55 max 1.42 max t2 w w1 w2 to-92 0.36~0.68 17.5~19 5.0~7.0 0.5 max (mm) h3 h4 h h1 w1 w h2 h2a h2 h2 t2 t1 t f1f2 p1 p p2 d1 d l l1 a d2 w2 carrier tape & reel dimensions carrier tape & reel dimensions
copyright ? anpec electronics corp. rev. b.8 - mar., 2005 apl431l www.anpec.com.tw 15 application carrier width cover tape width devices per reel sot- 23 8 5.3 3000 sot-23-5 8 5.3 3000 sot- 89 12 9.3 1000 to-92 17.5~19 5.0~7.0 2000 cover tape dimensions anpec electronics corp. head office : 5f, no. 2 li-hsin road, sbip, hsin-chu, taiwan, r.o.c. tel : 886-3-5642000 fax : 886-3-5642050 taipei branch : 7f, no. 137, lane 235, pac chiao rd., hsin tien city, taipei hsien, taiwan, r. o. c. tel : 886-2-89191368 fax : 886-2-89191369 customer service

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