e l ek tr on isch e b a u e lemen te SSC1118 1a positive low dropout fixed-mode regulator with en function d e s c r i p t i o n t h e SSC1118 is a low dropout positive 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.SSC1118 is also well suited for other applications such as vga cards. the product is guaranteed to have < 1.4v dropout at full load current making it ideal to provide well regulated outputs 1.5v to 12v with up to 18v input supply. the product offers a ttl-logic compatible enable pin. * fixed output voltage 1.5v,1.8v,2.5v,3.3v,5.0v,9.0v,12v f e a t u r e s * 1.4v max. dropout voltage at full load current * enable function * output current limiting * good noise rejection * fast transient response * built-in thermal shutdown * communication applications * cdrom. * pc peripheral 01 -jun-2002 rev. a page 1 of 3 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 5.80 6.20 m 0.10 0.25 b 4.80 5.00 h 0.35 0.49 c 3.80 4.00 l 1.35 1.75 d 0 c 8 c j 0.375 ref. e 0.40 0.90 k 45 c f 0.19 0.25 g 1.27 typ. millimeter millimeter gnd v out v in en nc name description ground pin descriptions the output pin of regulator. a min. of 10uf capacitor must be connected from this pin to ground to insure stability. the input pin of regulator. typically a large storage capacitor is connected from this pin to ground to insure that the input v oltage does not sag below the min. dropout voltage during the load transient response. this pin must always be1.3v higher than v out in order for the device to regulate properly. this input pin of regulator. ttl/cmos compatiable input logic high= disable output, logic low or open=output enable. (internal pull-down resistor~100k) no connection.
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 1 5 0 v _ _ _ 6 0 s s c 1 1 1 8 - x x v i n = v o u t + 3 v f = 1 2 0 h z , c o u t = 2 5 u f , t a n t a l u m , i o = 1 a d b 7 0 _ _ _ _ _ _ _ _ d r o p o u t v o l t a g e ( v i n - v o u t ) c u r r e n t l i m i t m i n . l o a d c u r r e n t e n a b l e i n p u t v o l t a g e t h e r m a l r e g u l a t i o n r i p p l e r e j e c t i o n temperature stability 1 2 0 . 8 0 1 2 5 _ _ _ _ c o m a a t j l i n e r e g u l a t i o n % _ _ 0 . 2 s s c 1 1 1 8 - x x c i o = 1 0 m a , t j = 2 5 , v o u t + 1 . 5 v < v i n < 1 8 v c o _ _ l o a d r e g u l a t i o n m v s s c 1 1 1 8 - 1 5 v i n = 3 . 0 v , 0 m a < i o < 1 a , t j = 2 5 s s c 1 1 1 8 - 1 8 s s c 1 1 1 8 - 2 5 s s c 1 1 1 8 - 3 3 s s c 1 1 1 8 - 5 0 s s c 1 1 1 8 - 9 0 s s c 1 1 1 8 - 1 2 1 5 2 0 2 6 4 0 7 0 1 0 0 1 5 1 8 2 5 3 3 5 0 9 0 1 2 0 1 , 2 v i n = 3 . 3 v , 0 m a < i o < 1 a , v i n = 4 . 0 v , 0 m a < i o < 1 a , v i n = 5 . 0 v , 0 m a < i o < 1 a , v i n = 8 . 0 v , 0 m a < i o < 1 a , v i n = 1 2 . 0 v , 0 m a < i o < 1 a , v i n = 1 5 . 0 v , 0 m a < i o < 1 a , c o t j = 2 5 1 , 2 c o t j = 2 5 1 , 2 c o t j = 2 5 1 , 2 c o t j = 2 5 1 , 2 c o t j = 2 5 1 , 2 c o t j = 2 5 1 , 2 1 . 3 1 . 4 c o p a r a m e t e r m a x . t y p . c o n d i t i o n m i n . u n i t o u t p u t v o l t a g e v v i n 1 . 4 7 0 1 . 5 0 0 1 . 5 3 0 s s c 1 1 1 8 - 1 5 i o = 1 0 m a , t j = 2 5 , 3 . 0 v 1 5 v 1 . 7 6 4 1 . 8 0 0 1 . 8 3 6 c o v i n s s c 1 1 1 8 - 1 8 i o = 1 0 m a , t j = 2 5 , 3 . 3 v 1 5 v c o v i n s s c 1 1 1 8 - 2 5 i o = 1 0 m a , t j = 2 5 , 4 . 0 v 1 5 v 2 . 4 5 0 2 . 5 0 0 2 . 5 5 0 c o v i n s s c 1 1 1 8 - 3 3 i o = 1 0 m a , t j = 2 5 , 4 . 8 v 1 5 v 3 . 2 3 5 3 . 3 0 0 3 . 3 6 5 4 . 9 0 0 5 . 0 0 0 5 . 1 0 0 c o v i n s s c 1 1 1 8 - 5 0 i o = 1 0 m a , t j = 2 5 , 6 . 5 v 1 5 v c o v i n s s c 1 1 1 8 - 9 0 i o = 1 0 m a , t j = 2 5 , 1 0 . 5 v 1 8 v 8 . 8 2 0 9 . 0 0 0 9 . 1 8 0 c o v i n s s c 1 1 1 8 - 1 2 i o = 1 0 m a , t j = 2 5 , 1 3 . 5 v 1 8 v 1 1 . 7 6 0 1 2 . 0 0 0 1 2 . 2 4 0 o i o = 1 a , v o u t = 0 . 1 v o u t _ 1 . 1 ( v i n - v o u t ) = 5 v c o s s c 1 1 1 8 - x x s s c 1 1 1 8 - x x s s c 1 1 1 8 - x x v e n v 1 . 6 l o g i c l o w ( o n ) l o g i c h i g h ( o f f ) _ _ e n a b l e i n p u t c u r r e n t 1 0 _ _ i e n u a 8 0 v e n = 2 . 0 v v e n = 0 . 8 v t a = 2 5 c , 3 0 m s o p u l s e 0 . 0 0 8 0 . 0 4 % w ( u n d e r o p e r a t i n g c o n d i t i o n s ) q ja thermal resistance junction-to-ambient (no heat sink;no air folw) q jc thermal resistance junction-to-case control circuitry/power transistor i o =10ma % c/w o c/w o _ _ _ _ _ 0.5 150 25 dc supply voltage enable pin voltage power dissipation storage temperature range operating juction temperature range parameter symbo l ratings unit v v v in v en -0.3 to 18 7 0~+150 -65~+150 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 st t op c o c o internally limited 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 3 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 s f o r c h a r g e s i n o u t p u t v o l t a g e d u e t o h e a t i n g e f f e c t 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 s u r e d a t a c o n s t a n t j u c t i o n t e m p e r a t u r e b y l o w d u t y c y c l e p u l s e t e s t i n g . l o a d r e g u l a t i o n i s m e a s u r e d a t t h e o u t p u t l e a d = 1 / 8 " f r o m t h e p a c k a g e . 2 : l i n e a n d l o a d r e g u l a t i o n s a r e g u a r a n t e e d u p t o t h e m a x . p o w e r d i s s i p a t i o n o f 1 5 w . p o w e r d i s s i p a t i o n i s d e t e r m i n e d b y t h e i n p u t / o u t p u t d i f f e r e n t i a l a n d t h e o u t p u t c u r r e n t . g u a r a n t e e d m a x . p o w e r d i s s i p a t i o n w i l l n o t b e a v a i l a b l e o v e r t h e f u l l i n p u t / o u t p u t r a n g e . 3 : q u i e s c e n t c u r r e n t i s d e f i n e d a s t h e m i n . o u t p u t c u r r e n t r e q u i r e d t o m a i n t a i n 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 v i c e 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 . s s c 1 1 1 8 1 a p o s i t i v e l o w d r o p o u t fixed-mode regulator with en function
01-jun-2002 rev. a page 3 of 3 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 s sc1118 1a positive low dropout fixed-mode regulator with en function t y p i c a l p e r f o r m a n c e c h a r a c t e r i s t i c s i l o a d = 8 0 0 m a
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