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adjustable precis ion shunt regulator ap432/ap432a this datasheet contains new product information. anachip corp. re serves 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. rev.1.2 sep.28, 2005 1/16 ? features - precision reference voltage ap432 : 1.24v 1% ap432a : 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 ap432/432a 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 ap432/432a 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 x x x package packing blank : tube or bulk a : taping reference voltage operating temp. range blank : sop-8l y : sot89-3l v : to92-3l w : sot23-3l r : sot23-3l q : sot25 blank : -20 o c~85 o c i : -40 o c~85 o c lead free blank : normal l : lead free package tolerance: blank : 1.24v(+/-) 1% a : 1.24v(+/-) 0.5% ? typical application circuit + + r2 r1 v out v in v out = (1+r1/r2)v ref precision regulator c in c out ap432
adjustable precis ion shunt regulator ap432/ap432a anachip corp. www.anachip.com.tw rev.1.2 sep.28, 2005 2/16 ? 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) ap432y ap432 ay ap432iy ap432iay (sot89) ap432v ap432 av ap432iv ap432iav (to92) order number ap432r ap432ar ap432ir ap432iar (sot23) ap432w ap432aw ap432iw ap432iaw (sot23) 1 ref 2 anode 3 cathode 1 ref 2 anode + + + 3 cathode anode 1 2 cathode 3 ref anode 1 2 ref 3 cathode cathode 1 anode 2 anode 3 nc 4 5 nc 6 anode 7 anode 8 ref ap432 ap432a ap432i ap432ia (sop) pin configuration (top view) ap432 q ap432 aq ap432iq ap432iaq (sot25) nc 1 4 ref nc 2 cathode 3 5 anode
adjustable precis ion shunt regulator ap432/ap432a anachip corp. www.anachip.com.tw rev.1.2 sep.28, 2005 3/16 ? marking information (1) sot23 / sot25 / sot89 p/n type x x ap432y b1 ap432ay b2 ap432iy ba ap432iay bb ap432w b3 ap432aw b4 ap432iw bc ap432iaw bd ap432r b5 ap432ar b6 ap432ir be ap432iar bf AP432Q b7 ap432aq b8 ap432iq bg ap432iaq bh xx ym x sot23/sot25 xx ym x sot89 date code y :year m : month(a~l) xx : p/n type (top view) x: blank : normal l : lead free package (2) sop accuracy ap432x x yyww x blank: a : logo ( top view ) 1% 1.24 0.5% 1.24 blank: -20 o c ~ +85 o c i : -40 o c ~ +85 o c yy : year ww: nth week date code temp. grade lead free blank: normal l: lead free package (3) to92 accuracy ap432x x y ww x x blank: a : ( top view ) y : year ww: nth week date code internal code temp. grade 1% 1.24 0.5% 1.24 blank: -20 o c ~ +85 o c i : -40 o c ~ +85 o c blank: normal l: lead free package lead free
adjustable precis ion shunt regulator ap432/ap432a anachip corp. www.anachip.com.tw rev.1.2 sep.28, 2005 4/16 ? absolute maximum ratings cathode voltage?????....??.......... .?..........??????????????...???.20v continuous cathode current ????????????.. ................ ....????????...-10ma ~ 250ma reference input current range ?????????...?. ???....................????????????10ma operating temperature range (ap432) ???????????????????????? -20 o c ~ 85 o c (ap 432i?????..?..?............ ???????????..??. -40 o c~85 o c lead temperature??????.?????.? ..????????..??????..??........260 o c storage temperature ????????........ ......?......???????..... ..??...........-65 o c ~ 150 o c power dissipation (notes 1. 2) sot89 .?????..??..????????...........?.... 0. 80w to92.....?????.?????????....???.. ..... 0.78w sot23 ???????..?..???????????.?. 0.25w sot25...????????..????.????????..0.25w sop...???????.???????????..??? 0.6w note 1: tj, max =150 o c. . note 2: ratings apply to ambient temperature at 25 o c. ? electrical characteristics (ta=25 o c, unless otherwise specified.) parameter test conditions symbo l min. typ. max. unit ap432 1.227 1.252 reference voltage v ka = vref, i ka = 10ma (fig.1) ap432a 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 ? ? -1.4 -2.0 mv/v reference input current r1 = 10k ? ,r2 = i ka = 10ma (fig.2) i ref 1.4 3.5 a deviation of reference input current over temperature r1 = 10k ? ,r2 = i ka = 10ma ta = full range (fig.2) i ref 0.4 1.2 a minimum cathode current for regulation v ka = v ref (fig.1) i ka(min) 0.15 0.3 ma off-state current v ka = 20v , v ref = 0v (fig.3) i ka(off) 0.1 1.0 a dynamic output impedance (note 4) v ka = v ref frequency ka z 0.2 0.5 ?
adjustable precis ion shunt regulator ap432/ap432a anachip corp. www.anachip.com.tw rev.1.2 sep.28, 2005 5/16 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 v ref is defined as: 1 2 6 c) (25 ref dev ref t t 10 ) v v ( v ? = ????????..??????.. ( ) c ppm where: t2 ? t1 = full temperature change. v ref can be positive or negative depending on whether the slope is positive or negative. note 4. the dynamic output impedance, r z , is defined as: ka ka ka i v z ? ? = when the device is programmed with two external resistors r1 and r2 (see figure 2.), the dynamic output impedance of the overall circuit, is defined as: ) ( r2 r1 1 z i v ' z ka ka + ? ? = ? test circuits input v ref v ka i ka fig1. test circuit for v ka = v ref in v ref r1 r2 i ref i ka v ka fig2. test circuit for v ka v ref in v ka i z(off) fig3. test circuit for off-state current r1 i ) r2 r1 (1 v v ref ref ka ? + + =
adjustable precis ion shunt regulator ap432/ap432a anachip corp. www.anachip.com.tw rev.1.2 sep.28, 2005 6/16 ? typical performance characteristics + - + - output gnd 15k ? 8.25k ? 9f i ka 232 ? test circuit for voltage amplification small-signal voltage amplification vs. frequency 0 10 20 30 40 50 60 1k 10k 100k 1m 10m f-frequency-hz a v -small signal voltage amplification (db) i ka =10ma t a =25 o c + - i ka gnd output 1k ? 50 ? test circuit for reference impedance reference impedance vs. frequency 0.1 1 10 100 1k 10k 100k 1m 10m f-frequency-hz O zka O reference impedance i ka =10ma t a =25 o c + - 150o i ka v batt c l test circuit for curve a + - c l r1=10ko r2 i ka 150o v batt test circuit for curve b, c, and d the areas under the curves represent conditions that may cause the device to oscillate. for curves b, c, and d, r2 and v+ were adjusted to establish the initial v ka and i ka conditions with c l =0.v batt and c l were then adjusted to determine the ranges of stability. stability boundary conditions ? 0 10 20 30 40 50 60 70 80 90 100 0.001 0.01 0.1 1 10 c l -load capacitance- 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
adjustable precis ion shunt regulator ap432/ap432a anachip corp. www.anachip.com.tw rev.1.2 sep.28, 2005 7/16 ? 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 v in high limit fig.10 over-voltage / under-voltage protection circuit v in r cl i out i out = v ref / r cl fig.6 current limiter or current source i out v in i out = v ref / r s r s fig.7 constant-current sink fig.4 voltage monitor fig.5 delay timer v out = (1 + r1/r2) v ref v in r1 r2 fig.8 higher-current shunt regulator v out v in puse r1 r2 l imit (1 + r1/r2) v ref fig.9 crow bar v out v in on off r + v in delay = rc x ln( v in -v ref ) led on when low limit v in high limit low limit v ref (1+r1b/r2b) high limit v ref (1+r1a/r2a) r1a r2a v in r1b r2b
adjustable precis ion shunt regulator ap432/ap432a anachip corp. www.anachip.com.tw rev.1.2 sep.28, 2005 8/16 ? package diagrams (1) sot89-3l package outline dimension l he e d1 e1 e a d b1 bb 8 0 (2x) 1.7 c 0.4 0.9 2.7 1.3 1.9 5 0 (2x) land pattern recommendation (unit: mm) 1.5 dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 1.40 1.50 1.60 0.055 0.059 0.063 b 0.36 0.42 0.48 0.014 0.016 0.018 b1 0.41 0.47 0.53 0.016 0.043 0.051 c 0.35 0.39 0.43 0.014 0.015 0.017 d 4.40 4.50 4.60 0.173 0.177 0.181 d1 1.40 1.60 1.75 0.055 0.062 0.069 e 2.90 3.00 3.10 0.114 0.118 0.122 e1 1.45 1.50 1.55 0.057 0.059 0.061 e 2.35 2.48 2.60 0.093 0.098 0.102 he 3.94 - 4.25 0.155 - 0.167 l 0.80 - 1.20 0.031 - 0.047
adjustable precis ion shunt regulator ap432/ap432a anachip corp. www.anachip.com.tw rev.1.2 sep.28, 2005 9/16 (2) to92-3l package outline dimension d b b 1 b e l e a 1 a dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 3.302 3.556 3.810 0.130 0.140 0.150 a1 1.016 - - 0.040 - - b 0.330 0.381 0.432 0.013 0.015 0.017 b1 0.406 0.457 0.506 0.016 0.018 0.020 d 4.445 4.572 4.699 0.175 0.180 0.185 e 4.445 4.572 4.699 0.175 0.180 0.185 l 13.00 - 15.500 0.512 - 0.610 e 1.150 1.270 1.390 0.045 0.050 0.055
adjustable precis ion shunt regulator ap432/ap432a anachip corp. www.anachip.com.tw rev.1.2 sep.28, 2005 10/16 (3) sot23-5l package outline dimension l e e he d a2 a1 b(5x) a view c l1 1(4x) 2(4x) e1 gauge plane c see view c dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 1.05 - 1.35 0.041 - 0.053 a1 0.05 - 0.15 0.002 - 0.006 a2 1.00 1.10 1.20 0.039 0.043 0.047 b 0.25 - 0.50 0.010 - 0.020 c 0.08 - 0.20 0.003 - 0.008 d 2.70 2.90 3.00 0.106 0.114 0.118 e 1.50 1.60 1.70 0.059 0.063 0.067 he 2.60 2.80 3.00 0.102 0.110 0.118 l 0.30 - 0.60 0.012 - 0.024 l1 0.50 0.60 0.70 0.020 0.024 0.028 e 1.80 1.90 2.00 0.071 0.075 0.079 e1 0.85 0.95 1.05 0.033 0.037 0.041 0 o 5 o 10 o 0 o 5 o 10 o 1 3 o 5 o 7 o 3 o 5 o 7 o 2 6 o 8 o 10 o 6 o 8 o 10 o
adjustable precis ion shunt regulator ap432/ap432a anachip corp. www.anachip.com.tw rev.1.2 sep.28, 2005 11/16 (4) sot23-3l package outline dimension l e e he d a2 a1 b(3x) a view c l1 1(4x) 2(4x) e1 gauge plane c see view c dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 1.05 - 1.35 0.041 - 0.053 a1 0.05 - 0.15 0.002 - 0.006 a2 1.00 1.10 1.20 0.039 0.043 0.047 b 0.25 - 0.50 0.010 - 0.020 c 0.08 - 0.20 0.003 - 0.008 d 2.70 2.90 3.00 0.106 0.114 0.118 e 1.50 1.60 1.70 0.059 0.063 0.067 he 2.60 2.80 3.00 0.102 0.110 0.118 l 0.30 - 0.60 0.012 - 0.024 l1 0.50 0.60 0.70 0.020 0.024 0.028 e 1.80 1.90 2.00 0.071 0.075 0.079 e1 0.85 0.95 1.05 0.033 0.037 0.041 0 o 5 o 10 o 0 o 5 o 10 o 1 3 o 5 o 7 o 3 o 5 o 7 o 2 6 o 8 o 10 o 6 o 8 o 10 o
adjustable precis ion shunt regulator ap432/ap432a anachip corp. www.anachip.com.tw rev.1.2 sep.28, 2005 12/16 (5) sop-8l package outline dimension view "a" l c view "a" h e a a2 a1 b e d 7 (4x) 0.015x45 7 (4x) y dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 1.40 1.60 1. 75 0.055 0.063 0.069 a1 0.10 - 0.25 0.040 - 0.100 a2 1.30 1.45 1. 50 0.051 0.057 0.059 b 0.33 0.41 0. 51 0.013 0.016 0.020 c 0.19 0.20 0.25 0.0075 0.008 0.010 d 4.80 5.05 5. 30 0.189 0.199 0.209 e 3.70 3.90 4. 10 0.146 0.154 0.161 e - 1.27 - - 0.050 - h 5.79 5.99 6. 20 0.228 0.236 0.244 l 0.38 0.71 1. 27 0.015 0.028 0.050 y - - 0.10 - - 0.004 0 o - 8 o 0 o - 8 o
adjustable precis ion shunt regulator ap432/ap432a anachip corp. www.anachip.com.tw rev.1.2 sep.28, 2005 13/16 ? taping information (1)to92 taping po m ho t f2 f1 do a ? h millimeters inches symbol min. typ. max. min. typ. max. po 12.4 12.7 13.0 0.488 0.500 0.512 m 2.0 2.5 3.0 0.079 0.098 0.118 ho 15.5 16.0 16.5 0.610 0.630 0.650 do - 4.0 - - 0.157 - a - 6.0 - - 0.236 - h 0.0 - 1.0 0.000 - 0.039 t - 18.0 - - 0.709 - f1 2.4 2.5 2.9 0.094 0.098 0.114 f2 2.4 2.5 2.9 0.094 0.098 0.114
adjustable precis ion shunt regulator ap432/ap432a anachip corp. www.anachip.com.tw rev.1.2 sep.28, 2005 14/16 30 1mm 90 1mm 76 1mm 360 2mm 45mm 53 2mm e 330mm 40mm 205mm
adjustable precis ion shunt regulator ap432/ap432a anachip corp. www.anachip.com.tw rev.1.2 sep.28, 2005 15/16 (2) to92 taping h2a h2a d1 f1 f2 p1 p p2 d l l1 a d2 h1 h4 h3 h w1 w h2 h2 t2 t t1 millimeters inches symbol min. typ. max. min. typ. max. a 3.18 7.59 12 0.125 0.299 0.472 d 3.8 4 4.2 0.150 0.157 0.165 d1 0.36 0.445 0.53 0.014 0.018 0.021 d2 - - 9.0 - - 0.354 f1,f2 2.4 2.5 2.7 0.094 0.098 0.106 f1-f2 - 0.30 - - 0.012 - h 15.5 16 16.5 0.610 0.630 0.650 h1 8.5 9 9.5 0.335 0.354 0.374 h2 - - 0.5 - - 0.020 h2a - - 0.5 - - 0.020 h3 - - 27 - - 1.063 h4 - - 20 - - 0.787 l - - 11 - - 0.433 l1 2.5 - - 0.098 - - p 12.5 12.7 12.9 0.492 0.500 0.508 p1 5.95 6.35 6.75 0.234 0.250 0.266 p2 50.3 50.8 51.3 1.980 2.000 2.020 t - - 0.55 - - 0.022 t1 - - 1.42 - - 0.056 t2 0.36 0.52 0.68 0.014 0.020 0.027 w 17.5 18.25 19 0.689 0.719 0.748 w1 5 6 7 0.197 0.236 0.276 ----* 253 254 255 9.961 10.000 10.039 ----* = every 20 pcs distance.
adjustable precis ion shunt regulator ap432/ap432a anachip corp. www.anachip.com.tw rev.1.2 sep.28, 2005 16/16 ? box dimension 53 195 40 40 70 195 40 197 40.5 40.5 41 330 24 556 811.5 330 37.5 6 43 4.68 18.18 16.67 18.68 38.5 39.5 unit:mm.

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