technical data KK431 programmable precision reference features ? programmable output voltage to 40v ? low dynamic output impedance 0.2 ? ? sink current capability of 0.1 ma to 100 ma ? equivalent full-range temperature coefficient of 50 ppm/ o c ? temperature compensated for operation over full rated operating temperature range ? low output noise voltage ? fast turn on response ? to-92, sop- 8 or sot-23 packages pin connections sot-23 sop-8 to-92 top vi ew description the KK431 is a three-terminal adjustable regulator series with a guaranteed thermal stability over applicable temperature range s. the output voltage may be set to any value betw een vref (approximat ely 2.5 volts) and 40 volts w i th tw o external resistors. the se devices have a ty pical dy namic output impedance of 0.2 ? . active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacement for zener di odes in many applications. the KK431 is characteriz ed for operation from -25 o c to +85 o c. symbol functional block diagram absolute maximum ratings (operating temperature range applie s unless otherw i se specified) c h a r a c t e r i s t i c s y m b o l v a l u e u n i t cathode voltage v ka 40 v cathode current range (continuous) i k -100 ~ 150 ma reference input current range i ref 0.05 ~ 10 ma pow e r dissipation at 25 o c: sop, to ? 92 package (r ? ja = 178 o c/w) sot package (r ? ja = 625 o c/w) p d 0.7 0.2 w w junction temperature range t j 0 ~ 150 o c operating temperature range t g -25 ~ +85 o c storage temperature range t st g -65 ~ +150 o c 1
KK431 recommended operating conditions c h a r a c t e r i s t i c s y m b o l t e s t c o n d i t i o n m i n ty p max u n i t cathode voltage v ka v ref 40 v cathode current i k 0 . 5 100 m a electrical characteristics (t a = 25 o c, v ka = v ref , i k = 10ma unless otherw i se specified) c h a r a c t e r i s t i c s y m b o l t e s t c o n d i t i o n m i n ty p m a x u n i t reference input voltage v ref v ka = v re f , i k = 10m a kk 431 kk 431-a kk 431-c 2.440 2.470 2.482 2.495 2.495 2.495 2.550 2.520 2.508 v deviation of reference input voltage over full temperature range v ref ( dev) t mi n ta t ma x 3 1 7 m v ratio of change in reference input voltage to the change in cathode voltage ? ? v v re f ka ? v ka = 10v-v ref ? v ka = 36v- 10v - 1 . 4 -1.0 -2.7 -2.0 mv/v reference input current i ref r 1 = 10k ? , r 2 = 1 . 8 4 a deviation of reference input current over full temperature range i ref ( dev) r 1 = 10k ? , r 2 = 0 . 4 1 . 2 a minimum cathode current for regulation i k( m i n) 0 . 2 5 0 . 5 m a off-state cathode current i k ( o ff) v ka = 40 v, v ref = 0 0.26 0.9 a dy namic impedance z ka i k = 10ma to 100 ma , f 1.0khz 0 . 2 2 0 . 5 ? test circuits fig.1. test circuit for v ka = v ref fig.2. test circuit for v ka v ref fig.3. test circuit for i off i k( o f f ) b t in p u t v ka KK431 KK431 KK431 2
3 ordering information product number reference input voltage package KK431clf KK431cls to-92 KK431cd 8-sop KK431cs 0.5% sot-23 KK431alf KK431als to-92 KK431ad 8-sop KK431as 1% sot-23 KK431lf KK431ls to-92 KK431d 8-sop KK431s 2% sot-23 KK431
package dimensions t o -9 2 4 KK431
so t - 2 3 di m e n s i o n mi n m a x a 0. 75 0. 95 a 1 0. 25 1. 10 b 0. 38 0. 46 c 0. 50 0. 65 d 1. 20 1. 40 d 1 2. 10 2. 50 e 2. 80 3. 00 e 0. 85 1. 05 l 0. 40 0. 60 q 0. 09 0. 15 mm d d 1 b e e e l q c a a 1 d su f f i x so i c (m s - 0 1 2 a a ) sy m b o l m i n m a x a 4. 8 5 b 3. 8 4 c 1. 35 1. 75 d 0. 33 0. 51 f 0. 4 1 . 2 7 g h j 0 8 no t e s : k 0. 1 0 . 2 5 1. d i m e ns i ons a a n d b d o no t i n c l ud e m o l d f l a s h o r p r ot r u s i o n . m 0. 19 0. 25 2. m a x i m u m m o l d f l a s h o r p r o t r u s i o n 0. 15 m m ( 0 . 006) p e r s i d e p 5. 8 6 . 2 fo r a ; fo r b ? 0. 25 m m ( 0 . 010) p e r s i d e . r 0. 25 0. 5 1. 27 5. 72 d i me n s i o n , mm a b h c k c m j f m p g d r x 4 5 se a t i n g pl a n e 0 . 25 (0 . 0 10 ) m t -t - 1 8 4 5 5 KK431
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