a d justable a ccurate referenc e s ource tl431 (kl431) f e a tu r e s t h e o u t p u t v o l t a g e c a n b e a d j u s t e d t o 3 6 v l o w d y n a m i c o u t p u t i m pe d a n c e , i t s t y p i c a l v a l u e i s 0 . 2 t rap p i n g c u r r e n t c apab i l i t y i s 1 t o 1 0 0 m a t h e t y p i c a l v a l u e o f t h e e q u i v a l e n t t e m p e r a t u r e f a c t o r i n t h e w h o l e t e m p e r a t u r e s c o p e i s 5 0 p p m / t h e e f f e c t i v e t e m p e r a t u r e c o m p e n s a t i o n i n t h e w o r k i n g r a n g e o f f u l l t e m p e r a t u r e l o w o u t p u t n o i s e v o l t a g e f a s t o n - s t a t e r e s p o n s e e l e c t r i c a l c h a r a c t e r i s ti c s ( t a = 2 5 u n l e s s o t h e r w i s e s p e c i f i e d ) t i n u x a m p y t n i m s n o t i d n o c t s e t l o b m y s r e t e m a r a p v e g a t l o v t u p n i e c n e r e f e r r e f v k a = v r e f , i k a = 1 0 m a 2 . 4 5 2 . 5 2 . 5 5 v v e g a t l o v t u p n i e c n e r e f e r f o n o i t a i v e d k a = v r e f , i k a = 1 0 m a o v e r t e m p e r a t u r e ( * ) t m i n t a t m a x r a t i o o f c h a n g e i n r e f e r e n c e i n p u t v o l t a g e i k a = 1 0 m a , v k a = 1 0 v v r e f - 1 . 0 - 2 . 7 m v / v t o t h e c h a n g e i n c a t h o d e v o l t a g e i k a = 1 0 m a , v k a = 3 6 v 1 0 v - 0 . 5 - 2 . 0 m v / v i t n e r r u c t u p n i e c n e r e f e r r e f i k a = 1 0 m a , r 1 = 1 0 k , r 2 = 1 . 5 4 a d e v i a t i o n o f r e f e r e n c e i n p u t cur r e n t i k a = 1 0 m a , r 1 = 1 0 k , r 2 = t e g n a r e r u t a r e p m e t l l u f r e v o a = f u l l t e m p e r a t u r e m i n i m u m c a t h o d e cur r e n t f o r r e g u l a t i o n i k a ( m i n ) v k a = v r e f 0 . 4 5 1 . 0 m a i t n e r r u c e d o h t a c e t a t s - f f o k a ( o f f ) v k a = 3 6 v , v r e f 0 . 1 5 0 . 0 0 = a z e c n a d e p m i c i m a n y d k a v k a = v r e f , i k a = 1 t o 1 0 0 m a , f 1 . 0 k h z 0 . 1 5 0 . 5 * t m i n = 0 , t m a x = + 7 0 m v 0 . 4 1 . 2 a v r e f / t v r e f / v k a i r e f / t 4 . 5 1 7 www .kexin.com.cn 1 c i e p y t dip 1 . r eference 2 .a nod e 3 . cathode a b s o l u t e m a x i m u m ra t i n g s ( o p e r a t i n g t e m p e r a t u r e r a n g e a p p li e s u n l e s s o t h e r w i s e s p e c i f i e d ) t i n u g n i t a r l o b m y s r e t e m a r a p v e g a t l o v e d o h t a c k a 3 7 v c a t h o d e cur r e n t r a n g e ( c o n t i n u o u s ) i k a - 1 0 0 + 1 5 0 m a i e g n a r t n e r r u c t u p n i e c n e r e f e r r e f 0 . 0 5 + 1 0 m a p n o i t a p i s s i d r e w o p d 770 m w t e r u t a r e p m e t g n i t a r e p o o p r 0 7 0 t e g n a r e r u t a r e p m e t e g a r o t s s t g - 6 5 + 1 5 0 0.60 max 0.45 0.1 4.8 0.3 3.8 0.3 5.0 0.2 0.7 2.3 max 12.7 min 0.5 1.27 2.54 1 2 3 t o-92 unit:mm
www .kexin.com.cn 2 c l a s s i f i c a ti o n o f v r e f tl431 (kl431) c i e p y t dip rank 0.3 0.5 1 2 rangfe 2.493 ~ 2.508 2.487~ 2.512 2.475~ 2.525 2.450~ 2.550 - 2 - 1 0 1 2 3 - 10 0 - 5 0 0 5 0 10 0 15 0 - 4 0 - 2 0 0 2 0 4 0 6 0 8 0 10 0 242 5 245 0 247 5 250 0 252 5 -1. 0 -0. 5 0. 0 0 . 5 1. 0 1 . 5 2. 0 2 . 5 3. 0 - 20 0 - 10 0 0 10 0 20 0 30 0 40 0 50 0 60 0 70 0 80 0 v k a =v r e f t a =2 5 c a t hod e c u r r e n t v e r s u s c a t hod e v o l t a g e v k a , c a t ho de v o l t a g e ( v ) i k , cathode current (ma ) v k a =v r e f i k =10 m a r e f e r e n ce i npu t vo l t a g e v e r s u s a m b i e n t t e m p e r a t u r e v r e f , re f e rence inpu t v o l t a g e ( mv ) t a , a m bien t t e m pera t ure ( ) v k a =v r e f t a =2 5 c a t hod e c u r r e n t v e r s u s c a t hod e v o l t a g e i k , cathode current (ua ) v k a , c a t ho de v o l t a g e ( v ) ka ka ref t e st circuit for v k a = v re f i ka (min) $ typical characterisitics $ $
dip ty p e w w w . ke x in . com . c n 3 i c tl431 (kl431) t y p i c a l ch a r a c te r i s i ti c s - 4 0 - 2 0 0 2 0 4 0 6 0 8 0 10 0 0 5 1 0 1 5 2 0 2 5 3 0 3 5 4 0 0 5 1 0 1 5 2 0 2 5 3 0 3 5 4 0 - 2 0 - 1 6 - 1 2 - 8 - 4 0 - 4 0 - 2 0 0 2 0 4 0 6 0 8 0 10 0 0 . 0 0 0 . 2 5 0 . 5 0 0 . 7 5 1 . 0 0 1 . 2 5 1 . 5 0 v k a =36 v v r e f =0 v o ff- s t a t e c a thod e c u rr e n t v e rsus a m b i en t t e m p era t ur e t a , a m bien t t e m pera t ure ( ) i o f f , off-state c ath od e curr en t (n a) i k =10 m a t a =2 5 c h a ng e i n r e f e r e n ce i npu t vo l t a g e v e r s u s c a t hod e vo l t a g e v r e f , re f e rence inpu t v o l t a g e ( mv ) v k a , c a t ho de v o l t a g e ( v ) i k =10 m a r e f e r e n ce i npu t cu r r e n t v e r s u s a m b i e n t t e m p e r a t u r e t a , a m bien t t e m pera t ure ( ) i r e f , reference input current (ua ) t e st circuit for i of f t e st circuit for i re f t e st circuit for v k a = v re f ( 1+r 1 / r 2 ) +r1*i re f
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