100 m a a d j u s t a b l e o u t p u t p o s i t i ve v o l t a g e r e g u l a t o r t h e i l31 7 l i s a n a d j u s t a b l e 3 - t e r m i n a l po s i t i v e v o l t ag e r eg u l a t o r c ap a b l e o f s upp l y i n g i n e x c e ss o f 10 0 m a o v e r a n o u t p u t v o l t ag e r a n g e o f 1 . 2 v t o 37 v . t h i s v o l t ag e r e gu l a t o r i s e x c e p t i ona l l y e a sy t o u s e an d r e qu i r e s o n l y t w o e x t e r na l r e s i s t o r s t o s e t t h e ou t pu t v o l t ag e . f u r t h e r , i t e m p l o y s i n t e r na l c u r r e n t l i m i t i n g , t h e r m a l s h u t do w n and s a f e a r e a c o m p e n s a t i o n , m a k i ng t h e m e ss e n t i a l l y b l o w ? ou t p r o o f . t h e i l317l s e r v e s a w i d e v a r i e t y o f ap p l i c a t i o n s i n c l ud i ng l o c a l , on c a r d r e gu l a t i o n . t h i s d e v i c e c an a l s o b e u s e d t o m a k e a p r og r a mm a b l e o u t p u t r e gu l a t o r , o r b y c onn e c t i ng a f i x e d r e s i s t o r b e t w e e n t h e ad j u s t m en t and ou t pu t , t h e i l3 1 7l c an b e u s e d a s a p r e c i s i o n c u rr e n t r e gu l a t o r . f e a t u r e s ? o u t p u t c u r r e n t i n e x c e ss o f 10 0 m a ? o u t p u t a d j u s t a b l e b e t w ee n 1 . 2 v an d 3 7 v p i n 1 . a d j u s t ? i n t e r na l t h e r m a l o v e r l oad p r o t e c t i o n 2 . v o u t ? i n t e r na l s h o r t c i r c u i t c u rr e n t l i m i t i n g 3 . v i n ? o u t p u t t r a n s i s t o r s a f e - a r e a c o m p e n s a t i on ? f l o a t i n g o p e r a t i o n f o r h i g h v o l t a g e a pp l i c a t i on s ? s t an d a r d 3 - l e ad t r an s i s t o r p a ck ag e ? e li m i n a t e s s t o c k i n g m an y f i x e d v o l t ag e s * c i n is r equ i r ed i f r egu l a t o r i s l o c a t ed an app r e ci ab l e d is t an c e f r o m po w e r s upp l y f il t e r . ** c o is no t need e d f o r s t ab ili t y , ho w e v e r , i t d o e s i m p r o v e t r an si en t r e s pon s e . v o u t = 1 . 2 5 v ( 1 + r 2 /r 1 ) + i a dj r 2 s i n c e i a d j is c on t r o ll ed t o l e ss t han 100 a , t h e e rr o r a ss o ci a t ed w i t h t h is t e r m i s neg li g i b l e i n m o s t app l i c a t i on s . m a x i m u m r a ti n gs r a t i n g s y m bol v a l u e u n i t i n p u t - o u t p u t d i ff e r en t i al v i -v o 40 v d c p o w e r d i ss i p a t i on c a s e t o - 9 2 t a = 2 5 c t he r m al r e s i s t an c e , j u n c t i on - t o - a m b i en t t he r m al r e s i s t an c e , j u n c t i on - t o - c a s e c a s e s o i c - 8 ( n o t e 1 ) t a = 2 5 c t he r m al r e s i s t an c e , j u n c t i on - t o - a m b i en t t he r m al r e s i s t an c e , j u n c t i on - t o - c a s e p d r j a r j c r j a r jc i n t e r n a ll y l i m i t ed 1 6 0 83 1 8 0 45 w c / w c / w c / w c / w o p e r a t i n g j u n c t i on t e m p e r a t u r e r a ng e t j - 10 t o + 12 5 c s t o r a g e t e m p e r a t u r e r a nge t s t g - 65 t o + 15 0 c 1 2 3 1 beijing estek electronics co.,ltd ET-IL317L
e l e c t r i c a l ch a r a c t e r i s ti c s (v i -v o = 5 . 0 v ; i o = 4 0 m a ;t a = 2 5 c , u nl e ss o t h e r w i s e n o t ed, i m a x a n d p m a x ( n o t e 1 )) n o t es : 1 . i ma x = 10 0 m a , p ma x = 625 m w 2 . load and li ne r egu l a t i on a r e s pe ci f i ed a t c on s t an t j un c t i on t e m pe r a t u r e . c hange s i n v o d u e t o h e a t i ng e ff e c t s m u s t be t a k en i n t o a cc oun t s e p a r a t e l y . p u ls e t e s t i ng w i t h l o w du t y c y cl e is u s ed . f i g . 1 t e s t c i r c u i t f o r vo > 1 . 25 v f i g . 2 t e s t c i r c u i t f o r v o = 1 . 25 v i = 0 ,1 m f, o= 1 , 0 m f. i = 0 ,1 m f, o = 1 , 0 m f. v o=1 , 2 5 ( 1 + r 2 / r 1 )i a d j r 2 . r e f e r en c e v ol t a g e (t a = - 10 t o + 1 2 5 c ) 3 . 0 v v i - v o 4 0 v , 1 0 m a i o i m a x ,p d p m a x v o 1 . 2 0 1 . 3 0 v li n e r e g u l a t i on ( n o t e 2 ) 3 . 0 v v i - v o 4 0 v , i o = 5 m a d v o v - 20 m v li n e r e g u l a t i on (t a = - 1 0 t o + 1 2 5 c ) ( n o t e 2 ) 3 . 0 v v i - v o 4 0 v , i o= 5 m a d v o v - 35 m v l oad r e g u l a t i on ( n o t e 2 ) 10 m a i o i m a x , v i = 6 . 2 5 v d v oi - 6 . 2 5 m v l oad r e g u l a t i on (t a = - 1 0 t o + 1 2 5 c ) ( n o t e 2 ) 10 m a i o i m a x , v i = 6 . 2 5 v d v oi - 18 . 75 m v a d j u s t m e n t p in c u r r e n t i a dj 10 1 0 0 m a a d j u s t m e n t p in c u r r e n t c h a ng e , p d p m a x 3 . 0 v v i - v o 4 0 v , 1 0 m a i o i m a x d i a dj - 5 m a m a x i m u m o u t p u t c u r r en t ,p d p m a x i o m ax 0 . 1 - a m i n i m u m l oa d c u r r en t t o m a i n t ai n r e g u l a t i o n (v i - v o = 4 0 v) i l m in - 5 m a r i p p l e r e j e c t i on v o = 1 . 2 v , f = 1 2 0 h z rr 60 - d b 2 beijing estek electronics co.,ltd 100 m a a d j u s t a b l e o u t p u t p o s i t i ve v o l t a g e r e g u l a t o r ET-IL317L
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