adjustable precis ion shunt regulator AP432 this datasheet contains new product information. advanced power electronics corp. reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of this product. no rights under any patent accompany the sale of the product. 1 ? features - precision reference voltage b : 1.24v 1% a : 1.24v 0.5% - sink current capability: 200ma. - minimum cathode current for regulation: 150a - equivalent full-range temp coefficient: 30 ppm/ o c - fast turn-on response. - low dynamic output impedance: 0.2 ? - programmable output voltage to 20v - low output noise - packages: sot89, sot23, sot25, sop8 and to92 ? general description the AP432 are 3-terminal adjustable precision shunt regulators with guaranteed stable temperature over the applicable extended commercial temperature range. the output voltage may be set at any level greater than 1.24\/ (v ref ) up to 20v merely by selecting two external resistors that act as a voltage divider network. these devices have a typical output impedance of 0.2?. active output circuitry provides very sharp turn-on characteristics, making these devices excellent improved replacements for zener diodes in many applications. the precise +/- 1% reference voltage tolerance of the AP432 make it possible in many applications to avoid the use of a variable resistor, consequently saving cost and eliminating drift and reliability problems associated with it. ? ordering information a p 4 3 2 x - x - rohs compliant & halogen free product package reference voltage m : sop-8 g : sot89 t : to92 n : sot23 y : sot25 tolerance: a : 1.24v(+/-) 0.5% b : 1.24v(+/-)1% ? typical application circuit + + r2 r1 v out v in v out = (1+r1/r2)v ref precision regulator c in c out AP432 advanced power electronics corp. 20130108v3.1
adjustable precision shunt regulator AP432 advanced power electronics corp. www.a-power.com.tw 2 ? block diagram ref (r) v ref + - anode (a) cathode (c) 1.24v ? symbol cathode (c) ref (r) anode (a) ? pin configuration order number pin configuration (top view) AP432g (sot-89) AP432t (to-92) order number AP432n (sot-23) AP432y (sot-25) 1 ref 2 anode 3 cathode anode 1 2 ref 3 cathode cathode 1 anode 2 anode 3 nc 4 5 nc 6 anode 7 anode 8 ref AP432m (sop-8) pin configuration (top view) a d v a n ced po w e r electro n i cs co rp . anode 1 2 5 4 1 3 ref nc cathode nc 3 cathode 2 anode 1 ref
adjustable precision shunt regulator AP432 advanced power electronics corp. www.a-power.com.tw 3 ? absolute maximum ratings cathode voltage????....??..............................?..........??????????????...???.20v continuous cathode current ?????????? ? ?......................????????...-10ma ~ 250ma reference input current range ????????...?.???....................????????????10ma operating temperature range ............???????????????????????? -40 o c ~ 85 o c lead temperature??????.?????.?..????????..??????..??........260 o c storage temperature ????????..............?......???????.......??...........-65 o c ~ 150 o c power dissipation (notes 1. 2) sot-89 .?????..??..????????...........?.... 0. 80w to-92.....?????.?????????....???.. ..... 0.78w sot-23 ???????..?..???????????.?. 0.25w sot-25...????????..????.????????..0.25w sop-8...???????.???????????..??? 0.6w note 1: t j , max =150 o c. . note 2: ratings apply to ambient temper atu re at 25 o c. ? electrical characteristics (ta=25 o c, unless otherwise specified.) parameter test conditions symbo l min. typ. max. unit -b 1.227 1.252 reference voltage v ka = vref, i ka = 10ma (fig.1) -a v ref 1.233 1.24 1.246 v deviation of reference input voltage over temperature (note 3) v ka = v ref , i ka = 10ma , ta = full range (fig.1) v ref 3.0 20 mv ratio of the change in reference voltage to the change in cathode voltage i ka = 10ma (fig.2) v ka = 20 ~v ref ka ref v v ? ? ka z 0.2 0.5
a d v a n ced po w e r electro n i cs co rp .
adjustable precision shunt regulator AP432 advanced power electronics corp. www.a-power.com.tw 4 v max v min t i t 2 temperature v dev = v max - v min note 3. deviation of reference input voltage, v dev , is defined as the maximum variation of the reference over the full temperature range. the average temperature coefficient of the reference input voltage
adjustable precision shunt regulator AP432 advanced power electronics corp. www.a-power.com.tw 5 ? typical performance characteristics + - + - output gnd 15k ? ? ? ? ? O O f i ka -cathode current-m a a v ka =v ref b v ka =5v c v ka =10v d v ka =15v a b c d stable stable ta=25 o c a d v a n ced po w e r electro n i cs co rp .
adjustable precision shunt regulator AP432 advanced power electronics corp. www.a-power.com.tw 6 ? application examples v in + low limit v ref (1 + r1b/r2b) +v be high limit v ref (1 + r1a/r2a) r1a r1b r2a r2b v be output on when low limint
advanced power electronics corp. AP432 marking information so-8 sot-23-5l sot-23 sot-89 7 432m ywwsss part number date code (ywwsss) y last digit of the year ww week sss sequence package code r2ss part number : r2 r2ss part number : r2 4 3 2 g part number yww s date code (ywws) y:year ww week s sequence date code ss:2004,2008,2012? ss :2003,2007,2011? s s:2002,2006,2010? ss :2001,2005,2009? date code ss:2004,2008,2012? ss :2003,2007,2011? s s:2002,2006,2010? ss :2001,2005,2009? package code
advanced power electronics corp. AP432 marking information to-92 8 432t y wws part number date code (ywws) y:year ww week s sequence package code
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