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2013/03/12 ver.6 page 1 sp 432 low voltage adjustable precision shunt regulators description applications the sp432 is low-voltage three- terminal adjustable voltage references, with specified thermal stabilit y over applicable industrial and commercial temperatu re ranges. output voltage can be set to any value betw een v ref (1.24v) and 20v with two external resistors. these devices have a typical output impedance of 0.25 ? . active output circuitry provides a very sharp turn- on characteristic, making the sp432 excellent replacements for low- voltage zener diodes in many applications, including onboard regulation and adjustable power supplies. battery power equipment linear regulators switch power supply cellular phone digital cameras computer disk drivers instrumentation features low-voltage operation --- down to 1.24 v adjustable output voltage, v o = vref to 20 v low operational cathode current --- 80ua ( typ) 0.25 ? typical output impedance pin configuration sot-23 to-92 sot-23-5l sot-353 ( sc-70 ) part marking sot-23 to-92 sot-23-5l sot-353 ( sc-70 )
2013/03/12 ver.6 page 2 sp 432 low voltage adjustable precision shunt regulators typical applcation circuit pin description sp432as23rgb/sp432bs23rgb pin symbol description 1 r ref 2 c cathode 3 a anode sp432as25rgb/sp432bs25rgb pin symbol description 1 nc nc 2 nc nc 3 c cathode 4 r ref 5 a anode SP432AS35RGB/sp432bs35rgb pin symbol description 1 nc nc 2 a anode 3 c cathode 4 nc nc 5 r ref sp432bt92agb pin symbol description 1 r ref 2 a anode 3 c cathode
2013/03/12 ver.6 page 3 sp 432 low voltage adjustable precision shunt regulators ordering information part number voltage tolerance package part marking sp432as23rgb 0.5% sot-23 32ayw sp432bs23rgb 1.0% sot-23 32byw sp432as25rgb 0.5% sot-23-5l 32ayw sp432bs25rgb 1.0% sot-23-5l 32byw sp432bt92agb 1.0% to-92 sp432b SP432AS35RGB 0.5% sot-353 32ayw sp432bs35rgb 1.0% sot-353 32byw sp432as23rgb : tape reel ; pb C free; halogen C fre e sp432bs23rgb : tape reel ; pb C free; halogen C fre e sp432as25rgb : tape reel ; pb C free; halogen C fre e sp432bs25rgb : tape reel ; pb C free; halogen C fre e sp432bt92agb : tape ammo ; pb-free; halogen C free SP432AS35RGB : tape reel ; pb C free; halogen C fre e sp432bs35rgb : tape reel ; pb C free; halogen C fre e block diagram
2013/03/12 ver.6 page 4 sp 432 low voltage adjustable precision shunt regulators absoulte maximum ratings (t a =25 unless otherwise specified) parameter symbol value unit cathode voltage v z 20 v continuous cathode current i z 100 ma reference current i ref 3 ma operation junction temperature range t j -40 ~ +150 storage temperature range t stg -65 ~ +150 lead temperature range (soldering 10sec.) t sol 260 thermal resistance ? ja to-92 140 /w sot-23 206 sot-23-5l 206 sot-353 252 the ic has a protection circuit against static elec tricity. do not apply high static electricity or hi gh voltage that exceeds the performance of the protection circuit t o the ic. electrical characteristics (t a =25 , unless otherwise specified) sp432as23rg & sp432as25rg & sp432as35rg parameter symbol conditions min. typ. max. unit reference voltage v ref v z = v ref i z = 10ma t a =25 1.234 1.24 1.246 v t a =-40 ~+80 1.222 1.258 vref temp deviation v dev t a =-40 ~+80 v z = v ref , i z = 10ma 10 25 mv ratio of change in vref to change in cathode voltage ? v ref / ? v z i z = 10ma ? v z = 16v ~ v ref -1.0 -2.7 mv / v reference input current i ref r 1 =10k ? , r2 = , i z = 10ma 0.15 0.5 ua iref temp deviation i ref(dev) t a =-40 ~+80 r 1 =10k ? , r 2 = , i z = 10ma 0.1 0.4 ua off state cathode current i z(off) v ref = 0v v z = 6v 0.5 1.0 ua v z = 12v dynamic output impedance r z f < 1khz , v z = v ref i z = 1ma ~ 100ma 0.25 0.4 ? minimum operation current i z(min) v z = v ref 30 80 ua
2013/03/12 ver.6 page 5 sp 432 low voltage adjustable precision shunt regulators sp432bs23rg & sp432bs25rg & sp432bt92ag & sp4 32bs35rg parameter symbol conditions min. typ. max. unit reference voltage v ref v z = v ref i z = 10ma t a =25 1.228 1.24 1.252 v t a =-40 ~+80 1.215 1.265 vref temp deviation v dev t a =-40 ~+80 v z = v ref , i z = 10ma 10 25 mv ratio of change in vref to change in cathode voltage ? v ref / ? v z i z = 10ma ? v z = 16v ~ v ref -1.0 -2.7 mv / v reference input current i ref r 1 =10k ? , r 2 = , i z = 10ma 0.15 0.5 ua iref temp deviation i ref(dev) t a =-40 ~+80 r 1 =10k ? , r2 = , i z = 10ma 0.1 0.4 ua off state cathode current i z(off) v ref = 0v v z = 6v 0.5 1.0 ua v z = 12v dynamic output impedance r z f < 1khz , v z = v ref i z = 1ma ~ 100ma 0.25 0.4 ? minimum operation current i z(min) v z = v ref 30 80 ua application circuit
2013/03/12 ver.6 page 6 sp 432 low voltage adjustable precision shunt regulators to improve the stability of output voltage, figure 4, a 0.1uf capacitor is recommended between cathod e to anode
2013/03/12 ver.6 page 7 sp 432 low voltage adjustable precision shunt regulators performance characteristics
2013/03/12 ver.6 page 8 sp 432 low voltage adjustable precision shunt regulators performance characteristics
2013/03/12 ver.6 page 9 sp 432 low voltage adjustable precision shunt regulators performance characteristics
2013/03/12 ver.6 page 10 sp 432 low voltage adjustable precision shunt regulators performance characteristics
2013/03/12 ver.6 page 11 sp 432 low voltage adjustable precision shunt regulators sot-23 package outline
2013/03/12 ver.6 page 12 sp 432 low voltage adjustable precision shunt regulators sot-23-5l package outline
2013/03/12 ver.6 page 13 sp 432 low voltage adjustable precision shunt regulators to-92 package outline
2013/03/12 ver.6 page 14 sp 432 low voltage adjustable precision shunt regulators sot-353 package outline
2013/03/12 ver.6 page 15 sp 432 low voltage adjustable precision shunt regulators information provided is alleged to be exact and con sistent. sync power corporation presumes no respon sibility for the penalties of use of such information or for any vio lation of patents or other rights of third parties which may result from its use. no license is granted by allegation or otherwise un der any patent or patent rights of sync power corpo ration. conditions mentioned in this publication are subject to change without notice. this publication surpasses and re places all information previously supplied. sync power corporation produc ts are not authorized for use as critical component s in life support devices or systems without express written approval of sync power corporation. ?the sync power logo is a registered trademark of s ync power corporation ?2004 sync power corporation C printed in taiwan C all rights reserved sync power corporation 7f-2, no.3-1, park street nankang district (nksp), taipei, taiwan 115 phone: 886-2-2655-8178 fax: 886-2-2655-8468 ?http://www.syncpower.com

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