tl 431a m ( c hip s ) 1 f e a t ur es pr o g r a mm a bl e o u t pu t v o l t a g e t o 40 v l o w d y n a m i c o u t pu t i m p e d a n c e 0 .2 w s in k c u rr e n t c a p a bili t y o f 0 . 1 m a t o 100 m a e qui v a l e n t f ull - r a ng e t e m p e r a t u r e c oe ff i c i e n t o f 50 pp m/ o c t e m p e r a t u r e c o m p e n s a t e d f o r o p e r a t i o n o v e r f ull r a t e d o p e r a t ing t e m p e r a t u r e r a ng e l o w o u t pu t n o i s e v o l t a g e f a s t t u r n o n r e s p o n s t o - 92 , s o p- 8 , s o t - 89 o r s o t - 23 p a c k a g es p i n c o nn e c tio n s s ot - 23 s ot - 89 s o p- 8 to - 92 d es cr i p t io n t h e t l431 a i s a t h r ee - t e r m in a l a dju s t a bl e r e gul a t o r s e r i e s w i t h a gu a r a n t ee d t h e r m a l s t a bili t y o v e r a ppli c a bl e t e m p e r a t u r e r a ng e s . t h e o u t pu t v o l t a g e m a y b e s e t t o a n y v a lu e b e t w ee n vr e f ( a pp r o x i m a t e l y 2 . 5 v o l t s ) a nd 40 v o l t s w i t h t w o e x t e r n a l r e s i s t o r s . t h e s e d e v i c e s h a v e a t y pi c a l d y n a m i c o u t pu t i m p e d a n c e o f 0 .2 w . a c t i v e o u t pu t c i r c ui t r y p r o v id e s a v e r y s h a r p t u r n - o n c h a r a c t e r i s t i c , m a k ing t h e s e d e v i c e s e x c e ll e n t r e pl a c e m e n t f o r z e n e r di o d e s in m a n y a ppli c a t i o n s . t h e t l431 a i s c h a r a c t e r i z e d f o r o p e r a t i o n f r o m -0 o c t o +85 o c . sym b ol f unc t io n a l b lo ck d i a g r a m a b s ol u t e m a x i m u m r a t i n g s ( o p e r a t ing t e m p e r a t u r e r a ng e a ppli e s unl e ss o t h e r w i s e s p e c i f i e d ) c h a r ac t e r i s t i c s y m bol v a lu e u ni t c a t h o d e v o l t a g e v ka 40 v c a t h o d e c u rr e n t r a ng e ( c o n t inu o u s ) i k - 100 ~ 150 ma r e f e r e n c e i npu t c u rr e n t r a ng e i r ef - 0 . 05 ~ +10 m a p o w e r d i ss ip a t i o n a t 25 o c : t o ? 92 p a c k a g e (r q ja = 178 o c / w ) s o t ? 23 p a c k a g e (r q ja = 625 o c / w ) p d 0 . 7 0 . 2 w w j un c t i o n t e m p e r a t u r e r a ng e t j 0 ~ 150 o c o p e r a t ing t e m p e r a t u r e r a ng e t g 0 ~ 70 o c s t o r a g e t e m p e r a t u r e r a ng e t s tg - 65 ~ +150 o c t op v i e w
tl 431a m ( c hip s ) 2 r e c o mme nd e d o pe r a t i n g c o nd i t io n s c h a r ac t e r i s t i c s y m bol t es t c ondi t ion m in t y p m ax u ni t c a t h o d e v o l t a g e v ka v r ef 40 v c a t h o d e c u rr e n t i k 0 . 5 100 m a e l e c t r i c a l ch a r a c t e r i s t i c s (t a = 25 o c , v ka = v r ef , i k = 10 m a unl e ss o t h e r w i s e s p e c i f i e d ) c h a r ac t e r i s t i c s y m bol t es t c ondi t ion m in t y p m ax u ni t r e f e r e n c e i npu t v o l t a g e v r ef v ka = v r ef , i k = 10 m a 2 . 475 2 . 495 2 . 505 v d e v i a t i o n o f r e f e r e n c e i npu t v o l t a g e o v e r f ull t e m p e r a t u r e r a ng e v r e f ( d e v) t m in t a t m ax 3 17 m v r a t i o o f c h a ng e in r e f e r e n c e i npu t v o l t a g e t o t h e c h a ng e in c a t h o d e v o l t a g e d d v v r ef ka d v ka = 10 v-v r e f d v ka = 36 v- 10 v - 1 . 4 - 1 . 0 - 2 . 7 - 2 . 0 m v / v r e f e r e n c e i npu t c u rr e n t i r ef r 1 = 10k w , r 2 = 1 . 8 4 m a d e v i a t i o n o f r e f e r e n c e i npu t c u rr e n t o v e r f ull t e m p e r a t u r e r a ng e i r e f ( d e v) r 1 = 10k w , r 2 = 0 . 4 1 . 2 m a m ini m u m c a t h o d e c u rr e n t f o r r e gul a t i o n i k( m i n) 0 . 25 0 . 5 m a o ff -s t a t e c a t h o d e c u rr e n t i k( o ff) v ka = 40 v, v r ef = 0 0 . 26 0 . 9 m a d y n a m i c i m p e d a n c e z ka i k = 1 m a t o 100 m a , f 1 . 0 k h z 0 . 22 0 . 5 w t es t c i rcu i ts fig. 1 . t es t c i r c ui t f o r v ka = v r ef fig. 2 . t es t c i r c ui t f o r v ka 3 v r e f fig. 3 . t es t c i r c ui t f o r i o ff i k ( o ff) bt 4 32 i n put v ka t l 431 t l 431 t l 431 v ka 3 v r e
tl 431a m ( c hip s ) 3 p a d l a y o ut y 0 , 0 x c hip s i z e : 0 , 81x 0 , 76 p a d s i z e : 94 x 94 u ni t : m m p a d lo c a t ion u ni t: m m p a d n o. p a d n ame d esc r ip t ion x y 1 r r e f e r e n c e - 314 - 299 2 a a n o d e - 75 - 275 3 k c a t h o d e 231 - 299 p h ys i c a l ch a r a c t e r i s t i c w a f e r d i a 100 mm ( 4 " ) * w a f e r t h i ck ne ss 280 ? 420 20 m m scr i be w i d t h 90 m m p a ss i v a t i on ps g b a ck s i de m e t a lli z a t i on w i t hou t m e t a lli z a t i on m i n . l o t y i e l d 75 % m i n . w a f e r y i e l d 60 % * t he w a f e r t h i ck ne ss s m a ll be s pe c i f i ed i n a p o o r con t r a c t 1 2 3
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