e l ek tr on isch e b a u e lemen te SE1117A 1a low dropout positive adjustable or fixed-mode regulator d e s c r i p t i o n the SE1117A is a low dropout at positive adjustable or fixed-mode regulator with min. of 1a output current capability. the product is specifically designed to provide well-regulated supply for low voltage ic applications such as high-speed bus termination and low current 3.3v logic supply. SE1117A is also well suited for other applications such as vga cards. SE1117A is guaranteed to have lower than 1.4v dropout at full load current making it ideal to provide well regulated outputs of 1.25 to 5 with 6.4v to 12v input supply. * 3-terminal adjustable or f ixed 1.5v,1.8v,2.5v,3.3v,5.0v f e a t u r e s * 1.4 v max. dropout full load current * output current limiting * good noise rejection * fast transient response * built-in thermal shutdown 01 -jun-2002 rev. a page 1 of 4 http://www.secosgmbh.com/ any changing of specification will not be informed individual r o h s c o m p l i a n t p r o d u c t typical circuit ref. min. max. ref. min. max. a 4.40 4.80 c1 1.25 1.45 b 0.76 1.00 b1 1.17 1.47 c 0.36 0.50 l 13.25 14.25 d 8.60 9.00 e 2.54 ref. e 9.80 10.4 l1 2.60 2.89 l4 14.7 15.3 ? 3.71 3.96 l5 6.20 6.60 a1 2.60 2.80 millimeter millimeter
d c s u p p l y v o l t a g e p o w e r d i s s i p a t i o n s t o r a g e t e m p e r a t u r e r a n g e o p e r a t i n g j u c t i o n t e m p e r a t u r e r a n g e p a r a m e t e r s y m b o l r a t i n g s u n i t v v i n - 0 . 3 t o 1 2 0 ~ + 1 5 0 - 6 5 ~ + 1 5 0 a b s o l u t e m a x i m u m r a t i n g s p d t s t t o p c o c o i n t e r n a l l y l i m i t e d p i n d e s c r i p t i o n s e l e k t r o n i s c h e b a u e l e m e n t e h t t p : / / w w w . s e c o s g m b h . c o m / a n y c h a n g i n g o f s p e c i f i c a t i o n w i l l n o t b e i n f o r m e d i n d i v i d u a l 01-jun-2002 rev. a page 2 of 4 f u n c t i o n pin# i / o n a m e a d j ( g n d ) i 1 a r e si s t o r d i v i d e r f r o m t h i s p i n t o t h e v o u t p i n a n d g r o u n d se t s t h e o u t p u t vo l t a g e ( g r o u n d o n l y f o r f i x e d m o d e ) v o u t o 2 t h e o u t p u t o f t h e r e g u l a t o r . a m i n i m u m o f 1 0 u f ca p a ci t o r m u st b e co n n e ct e d f r o m t h i s p i n t o g r o u n d t o i n su r e st a b i l i t y . v i n i 3 t h e i n p u t p i n o f r e g u l a t o r . t yp i ca l l y a l a r g e s t o r a g e ca p a c i t o r i s co n n e ct e d f r o m t h i s p i n t o g r o u n d t o i n su r e t h a t t h e i n p u t vo l t a g e d o e s n o t sa g b e l o w t h e m i n i m u m d r o p o u t vo l t a g e d u r i n g t h e l o a d t r a n s i e n t r e sp o n se . t h i s p i n m u st a l w a ys b e 1 . 3 v h i g h e r t h a n v o u t i n o r d e r f o r t h e d e vi ce t o r e g u l a t e p r o p e r l y . s e1117a 1a low dropout positive adjustable or f i xed-mode regulator block diagram
01-jun-2002 rev. a page 3 of 4 h t p : / / w w w . s e c o s g m b h . c o m / a n y c h a n g i n g o f s p e c i f i c a t i o n w i l l n o t b e i n f o r m e d i n d i v i d u a l e l e k t r o n i s c h e b a u e l e m e n t e SE1117A 1a low dropout positive adjustable or fixed-mode regulator e l e c t r i c a l c h a r a c t e r i s t i c s p a r a m e t e r c o n d i t i o n s m i n t y p m a x u n i t s e 1 1 1 7 a - 1 . 5 i o = 1 0 m a , t j = 2 5 , 3 v v i n 1 2 v 1 . 4 7 0 1 . 5 0 0 1 . 5 3 0 v s e 1 1 1 7 a - 1 . 8 i o = 1 0 m a , t j = 2 5 , 3 . 3 v v i n 1 2 v 1 . 7 6 4 1 . 8 0 0 1 . 8 3 6 v s e 1 1 1 7 a - 2 . 5 i o = 1 0 m a , t j = 2 5 , 4 v v i n 1 2 v 2 . 4 5 0 2 . 5 0 0 2 . 5 5 0 v s e 1 1 1 7 a - 3 . 3 i o = 1 0 m a , t j = 2 5 , 4 . 8 v v i n 1 2 v 3 . 2 3 5 3 . 3 0 0 3 . 3 6 5 v o u t p u t v o l t a g e s e 1 1 1 7 a - 5 . 0 i o = 1 0 m a , t j = 2 5 , 6 . 5 v v i n 1 2 v 4 . 9 0 0 5 . 0 0 0 5 . 1 0 0 v l i n e r e g u l a t i o n s e 1 1 1 7 a - x x x i o = 1 0 m a , v o u t + 1 . 5 v < v i n < 1 2 v , t j = 2 5 - - 0 . 2 % s e 1 1 1 7 a a d j v i n = 3 . 3 v , v a d j = 0 , 0 m a < i o < 1 a , t j = 2 5 (n o t e 1 , 2 ) - - 1 % s e 1 1 1 7 a - 1 . 5 v i n = 3 v , 0 m a < i o < 1 a , t j= 2 5 (n o t e 1 , 2 ) - 1 2 1 5 m v s e 1 1 1 7 a - 1 . 8 v i n = 3 . 3 v , 0 m a < i o < 1 a , t j = 2 5 (n o t e 1 , 2 ) - 1 5 1 8 m v s e 1 1 1 7 a - 2 . 5 v i n = 4 v , 0 m a < i o < 1 a , t j= 2 5 (n o t e 1 , 2 ) - 2 0 2 5 m v s e 1 1 1 7 a - 3 . 3 v i n = 5 v , 0 m a < i o < 1 a , t j= 2 5 (n o t e 1 , 2 ) - 2 6 3 3 m v l o a d r e g u l a t i o n s e 1 1 1 7 a - 5 . 0 v i n = 8 v , 0 m a < i o < 1 a , t j= 2 5 (n o t e 1 , 2 ) - 4 0 5 0 m v d r o p o u t v o l t a g e ( v i n - v o u t ) s e 1 1 1 7 a a d j / 1 . 5 / 1 . 8 / 2 . 5 / 3 . 3 / 5 . 0 i o = 1 a , ( v o u t = 0 . 1 % v o u t ) - 1 . 3 1 . 4 v reference voltage s e 1 1 1 7 a a d j 1.225 1.250 1.275 v i o = 1 0 m a , t j = 2 5 , ( v i n - v o u t ) = 1 . 5 v c u r r e n t l i m i t s e 1 1 1 7 a a d j / 1 . 5 / 1 . 8 / 2 . 5 / 3 . 3 / 5 . 0 v i n - v o u t = 5 v 1 . 1 - - a m i n i m u m l o a d c u r r e n t s e 1 1 1 7 a - x x x 0 t j 1 2 5 - 5 1 0 m a t h e r m a l r e g u l a t i o n t a = 2 5 , 3 0 m s p u l se - 0 . 0 0 8 0 . 0 4 % / w f = 1 2 0 h z , c o u t = 2 5 u f t a n t a l u m , i o u t = 1 a r i p p l e r e j e ct i o n s e 1 1 1 7 a - x x x v i n = v o u t + 3 v - 6 0 7 0 d b t e m p e r a t u r e s t a b i l i t y i o = 1 0 m a - 0 . 5 - % j a t h e r m a l r e si st a n ce ju n ct i o n C t o - a m b i e n t ( n o h e a t s i n k ; n o a i r f l o w ) - 8 5 - / w j c t h e r m a l r e si st a n ce ju n ct i o n - t o - c a se c o n t r o l c i r cu i t r y / p o w e r t r a n s i s t o r - 0 . 6 5 / 2 . 7 - / w n o t e 1 : s e e t h e r m a l r e g u l a t i o n sp e ci f i ca t i o n s f o r ch a n g e s i n o u t p u t vo l t a g e d u e t o h e a t i n g e f f e ct s . l i n e a n d l o a d r e g u l a t i o n a r e m e a su r e d a t a co n st a n t j u n ct i o n t e m p e r a t u r e b y l o w d u t y cyc l e p u l se t e st i n g . l o a d r e g u l a t i o n i s m e a su r e d a t t h e o u t p u t l e a d = 1 / 1 8 f r o m t h e p a cka g e . n o t e 2 : l i n e a n d l o a d r e g u l a t i o n a r e g u a r a n t e e d u p t o t h e m a x i m u m p o w e r d i ss i p a t i o n o f 1 5 w . p o w e r d i ss i p a t i o n i s d e t e r m i n e d b y t h e d i f f e r e n ce b e t w e e n i n p u t a n d o u t p u t a n d t h e o u t p u t cu r r e n t . g u a r a n t e e d m a x i m u m p o w e r d i ss i p a t i o n w i l l n o t b e a va i l a b l e o ve r t h e f u l l i n p u t / o u t p u t r a n g e . n o t e 3 : q u i e sce n t cu r r e n t i s d e f i n e d a s t h e m i n i m u m o u t p u t cu r r e n t r e q u i r e d i n m a i n t a i n i n g r e g u l a t i o n . a t 1 2 v i n p u t / o u t p u t d i f f e r e n t i a l t h e d e vi ce i s g u a r a n t e e d t o r e g u l a t e i f t h e o u t p u t c u r r e n t i s g r e a t e r t h a n 1 0 m a .
01-jun-2002 rev. a page 4 of 4 h t p : / / w w w . s e c o s g m b h . c o m / a n y c h a n g i n g o f s p e c i f i c a t i o n w i l l n o t b e i n f o r m e d i n d i v i d u a l e l e k t r o n i s c h e b a u e l e m e n t e characteristics curve s e1117a 1a low dropout positive adjustable or f i xed-mode regulator
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