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ksd-i0a016-001 1 sept. 2010 rev01 sj432xx programmable voltage reference description the sj432 series are 3-terminal precision shunt regulators that are programmable over a wide voltage range of 1.24v to 16v with 0.5%, 1.0% tolerance. the sj432 series have a low dynamic impedance of 0.25 ? . these features make the sj432 series an excellent replacement fo r zener diodes in numerous applications circuits that require a precision reference voltage. features ? programmable output voltage from 1.24v to 16v ? voltage reference tole rance : 0.5%, 1.0% ? cathode current capability of 80 ? to 30ma ? high quality esd protected : esd rating ? typ. 4kv(hbm mode) ? typ. 400v(mm mode) [ k : cathode, a: anode, r : reference ] pkg : sot-23 apply device : sj432xs pkg : to-92 apply device : sj432x r k a k ra k ra pkg : to-92m apply device : sj432xm (marking side view) (top view) (marking side view) ? pin assignment pkg : sot-25 apply device : sj432xn r a k nc nc
ksd-i0a016-001 2 sept. 2010 rev01 sj432xx vref tolerance pkg type device name marking to-92 SJ432A sj432 a to-92m SJ432Am sj432 a sot-23 SJ432As 2ga 1) 1% sot-25 SJ432An 2na 1) to-92 sj432b sj432b to-92m sj432bm sj432b sot-23 sj432bs 2gb 1) 0.5% sot-25 sj432bn 2nb 1) note 1) : year & week code symbol functional block diagram ref reference(r) + - v ca thode (k) anode(a) =1.24v ? ordering information
ksd-i0a016-001 3 sept. 2010 rev01 sj432xx absolute maximum ratings [ta=25 ] characteristic symbol rating unit cathode to anode voltage v ka 20 v cathode current i k 30 ma reference input current i ref 3 ma sot-23(note1) 350 mw to-92m(note2) 400 mw sot-25(note1) 400 mw power dissipation to-92(note2) p d 625 mw junction temperature t j 150 operating temperature range t opr -40 ~ +85 storage temperature range t stg -55 ~ +150 note 1 : mounted on a glass epoxy pcb board (20 20mm).t a =25 note 2 : t a =25 recommended operating conditions rating characteristic symbol min. max. unit cathode to anode voltage v ka v ref 18 v cathode current i k 0.1 25 ma electrical characteristics (ta=25 , unless otherwise noted.) characteristic symbol condition min. typ. max . unit sj432bx 1.234 1.246 reference voltage (fig.1) v ref v ka =v ref , i k =10ma SJ432Ax 1.228 1.240 1.252 v reference input voltage deviation over temperature (fig.1, note1,2) v ref v ka =v ref , i k =10ma @ -40 ? c ta 85 ? c - 10 20 mv v ref v ref =v ref (16v) -v ref ratio of delta reference input voltage to delta cathode voltage (fig.2) v ka i k =10ma vref v ka 16v v ka =v ka(16v) -v ref - -1.0 -2.7 mv/v reference current (fig.2) i ref i k =10ma r1=10k , r2= - 1.0 1.5 ? reference input current deviation over temperature (fig.2, note 1,2) i ref i k =10ma r1=10k , r2= @ -40 ? c ta 85 ? c - 0.04 0.08 ? minimum cathode current for regulation i k(min) v ka =v ref - 55 80 ? off-state cathode current (fig.3) i k(off) v ka =16v, v ref =0v - 5 50 na dynamic impedance (fig.1, note3) z ka v ka =v ref , f 1.0khz 0.1ma i k 25ma - 0.25 0.4
ksd-i0a016-001 4 sept. 2010 rev01 sj432xx 1 ref 2 1 ref ka r i + ) r r + 1 ( v = v note. 1. ambient temperature range: t low = -40 , t high = 85 2. the deviation parameters v ref and i ref are defined as the difference betwee n the maximum value and minimum value obtained over the full operating ambient temperature range that applied. the average temperature coefficien t of the reference input voltage, ref v is defined as: t ) 10 ) 25 = t ( v v ( = ) ppm ( v a 6 a ref ref ref ref v can be positive or negative depending on whether v ref min or v ref max occurs at the lower am bient temperature, refer to fig. 8 example : v ref = 10mv and the slope is positive, v ref @ 25 = 1.24v t a = 125 / ppm 65 = 125 10 ) 241 . 1 010 . 0 ( = ) ppm ( v 6 ref 3. the dynamic impedance z ka is defined as: k ka ka i v = when the device is operating with two external resistors, r1 and r2, (refer to fig.2) the total dynamic impedance of the circui t is given by: ) r r + 1 ( = 2 1 ka ' ka fig. 1 test circuit for v ka =v ref fig. 2 test circuit for v ka >v ref fig. 3 test circuit for i k(off) ? v ref = v ref max ? v ref min ? t a = t 2 ? t 1 ambient temperature ka input r1 r2 v v ka input i k(off) i ref i k ka v input i k
ksd-i0a016-001 5 sept. 2010 rev01 sj432xx electrical characteristics curves (continue) cathode voltage v ka [v] 0.0 20 0.1 0.3 0.2 0 16 8 0.4 off-state cathode current i k(off) [ a] 12 4 2.0 cathode current i ka [ a] 0 0 0.5 1.0 300 50 -0.5 -1 1.5 250 200 - 50 150 100 -10 fig.4 i k vs v ka (1) fig.5 i k vs v ka (2) fig.6 i k(off) vs v ka i 20 1.5 10 - 10 1.0 cathode current i k [ma] 0 cathode voltage v ka [v] 2.0 0.5 -0.5 -1 0 30 v ka =v ref ta=25c cathode voltage v ka [v] fig.8 v ref vs t a 50 0 1.30 -25 1.26 75 25 100 1.28 1.22 1.24 1.20 -50 reference input voltage v ref [v] ambient temperature t a [ ? c] v ka =v ref , i k =10ma v ref(min) v ref(typ) v ref(max) fig.7 v ref / v ka vs t a 50 0 0.0 -25 -0.2 75 25 100 -0.1 -0.4 -0.3 -0.5 -50 ratio of delta reference input voltage to delta cathode voltage v ref / v ka [mv/v] ambient temperature t a [ ? c] v ref v ka 16v, i k =10ma fig.9 p d vs t a ambient temperature t a [ ? c] 100 50 25 125 75 150 0 power dissipation p d [mw] 0 500 300 400 1 0 0 200 with pcb (8 8mm copper area) at glass epoxy board (area=20 20mm) / sot-23 v ka =v ref ta=25c v ref =0v, ta=25c
ksd-i0a016-001 6 sept. 2010 rev01 sj432xx electrical characteristics curves unstable regions v ka r 1 [k ? ] r 2 [k ? ] a, b v ref 0 a 10v 10 1.415 r2 cl 0 gnd r1 output fig.10 stability boundary conditions i k fig.11 test circuit for fig. 10 ? ?
ksd-i0a016-001 7 sept. 2010 rev01 sj432xx ? to-92 outline dimension(mm)
ksd-i0a016-001 8 sept. 2010 rev01 sj432xx ? to-92m outline dimension (unit : mm)
ksd-i0a016-001 9 sept. 2010 rev01 sj432xx ? sot-23 outline dimension (unit : mm) recommend pcb solder land [unit: mm]
ksd-i0a016-001 10 sept. 2010 rev01 sj432xx ? sot-25 outline dimension (unit : mm) recommend pcb solder land [unit: mm]
ksd-i0a016-001 11 sept. 2010 rev01 sj432xx the auk corp. products are intended for the use as components in general electronic equipment (office and co mmunication equipment, m easuring equipment, home appliance, etc.). please make sure that you consult with us before you use these auk corp. products in equipments which require high quality and / or reliability, and in equipments which could have major impact to th e welfare of human life(atomi c energy control, airplane, spaceship, transportation, co mbustion control, all types of safety device, etc.). auk corp. cannot accept liability to any damage which may occur in case these auk corp. products were used in the mentioned equi pments without prior consultation with auk corp.. specifications mentioned in this publicati on are subject to change without notice.

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