e l ek tr on isch e b a u e lemen te 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 s 5 u111 8 1 a p o s i t i v e l o w d r o p o u t f i x e d - m o d e r e g u l a t o r w i t h e n f u n c t i o n d e s c r i p t i o n t h e s5 u 111 8 is a low dropout positive fixed-mode regulator with min. of 1 a 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.s 5 u 111 8 is also well suited for other applications such as vga cards. the product is guaranteed to have < 1. 4 v 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. * f ixed output voltage 1.5v,1.8v,2.5v,3.3v,5.0v,9.0v,12v f e a t u r e s * 1. 4 v max. dropout voltage at full load current * output current limiting * good noise rejection * fast transient response * built-in thermal shutdown * communication applications * cdrom * pc peripheral gnd v out v in en name desciption 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 does not sag below the min. dropout voltage during the load transient response. 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) out 1.3v higher than v input voltage ground to insure that the this pin must always be nc no connection * enable function m i l l i m e t e r b d m i l l i m e t e r r ef . m i n . m a x . r ef . m i n . m a x . a 4 . 4 0 4 . 8 0 c 2 1 . 2 5 1 . 4 5 b 0 . 6 6 0 . 9 1 l 2 1 . 2 7 r e f . l 4 0 . 0 0 0 . 3 0 b d 8 . 6 9 . 0 c 0 . 3 6 0 . 5 e 1 . 7 0 r e f . l 1 2 . 2 9 2 . 7 9 l 1 4 . 6 1 5 . 8 e 9 . 8 0 1 0 . 4 0 ? 8 ? m i l l i m e t e r
dc supply voltage power dissipation storage temperature range operating juction temperature range parameter symbo l ratings unit v v in -0.3 to 1 8 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 enable pin voltage v en v 7 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 t a g e d o e s n o t s a g b e l o w t h e m i n i m u m d r o p o u t v o l t a g e d u ri n g t h e l o a d 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 v i c e t o d e s c r i p ti o n g n d t y p i c a l l y a l a rg e s t o r a g e c a p a c i t o r i s c o n n e c t 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 s u r e t h a t t h e i n p u t 1 . 3 v o r o p e n = o u t p u t e n a b l e . n c 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 (u n d e r o p e r a t i n g c o n d i t i o n s ) pa r a m e te r c o n d i t i o n s m i n t yp m a x u n i t s 5 u 1 1 1 8 - 1 5 i o = 1 0 m a , t j = 2 5 , : 3 . 0 v v i n 1 5 v 1 . 4 7 1 . 5 0 0 1 . 5 3 0 v s 5 u 1 1 1 8 - 1 8 i o = 1 0 m a , t j = 2 5 , : 3 . 3 v v i n 1 5 v 1 . 7 6 4 1 . 8 0 0 1 . 8 3 6 v s 5 u 1 1 1 8 - 2 5 i o = 1 0 m a , t j = 2 5 , : 4 . 0 v v i n 1 5 v 2 . 4 5 0 2 . 5 0 0 2 . 5 5 0 v s 5 u 1 1 1 8 - 3 3 i o = 1 0 m a , t j = 2 5 , : 4 . 8 v v i n 1 5 v 3 . 2 3 5 3 . 3 0 0 3 . 3 6 5 v s 5 u 1 1 1 8 - 5 0 i o = 1 0 m a , t j = 2 5 , : 6 . 5 v v i n 1 5 v 4 . 9 0 0 5 . 0 0 0 5 . 1 0 0 v s 5 u 1 1 1 8 - 9 0 i o = 1 0 m a , t j = 2 5 , : 1 0 . 5 v v i n 1 8 8 . 8 2 0 9 . 0 0 0 9 . 1 8 0 v o u t p u t v o l t a g e s 5 u 1 1 1 8 - 1 2 i o = 1 0 m a , t j = 2 5 , : 1 3 . 5 v v i n 1 8 v 1 1 . 7 6 1 2 . 0 0 1 2 . 2 4 v l i n e r e g u l a t o r s 5 u 1 1 1 8 - x x i o = 1 0 m a , t j = 2 5 , : v o u t + 1 . 5 < v i n < 1 8 v - - 0 . 2 % s 5 u 1 1 1 8 - 1 5 v i n = 3 . 0 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 5 u 1 1 1 8 - 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 5 u 1 1 1 8 - 2 5 v i n = 4 . 0 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 5 u 1 1 1 8 - 3 3 v i n = 5 . 0 v , 0 m a < i o < 1 a , t j = 2 5 : , (n o t e 1 , 2 ) - 2 6 3 3 m v s 5 u 1 1 1 8 - 5 0 v i n = 8 . 0 v , 0 m a < i o < 1 a , t j = 2 5 : , (n o t e 1 , 2 ) - 4 0 5 0 m v s 5 u 1 1 1 8 - 9 0 v i n = 1 2 . 0 v , 0 m a < i o < 1 a , t j = 2 5 : , (n o t e 1 , 2 ) - 7 0 9 0 m v l o a d r e g u l a t i o n s 5 u 1 1 1 8 - 1 2 v i n = 1 5 . 0 v , 0 m a < i o < 1 a , t j = 2 5 : , (n o t e 1 , 2 ) - 1 0 0 1 2 0 % d r o p o u t v o l t a g e ( v i n - v o u t ) s 5 u 1 1 1 8 - x x i o = 1 a , v o u t = 0 . 1 v o u t - 1 . 3 1 . 4 v c u r r e n t l i m i t s 5 u 1 1 1 8 - x x ( 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 5 u 1 1 1 8 - x x 0 t : j 1 2 5 : - 5 1 0 m a l o g i c l o w ( o n ) - - 0 . 8 e n a b l e i n p u t v o l t a g e v e n l o g i c h i g h ( o f f ) 1 . 6 - - v v e n = 0 . 8 v - - 1 0 e n a b l e i n p u t c u r r e n t i e n v e n = 2 . 0 v - - 8 0 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 = 1 a r i p p l e r e j e ct i o n s 5 u 1 1 1 8 - 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 ? 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 ) - 9 0 - / : 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 - 3 . 5 - / : 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 s p e c i f i c 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 n 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 . 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 s 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 s s i p a t i o n o f 1 5 w . po 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 i m u m 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 n o t e 3 : q u i e s c e n t c u rr 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 c u rr 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 . at 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 rr e n t i s g r e a t e r t h a n 1 0 m a. s5u111 8 1a positive low dropout f ixed-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 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 load=800ma S5U1118 1a positive low dropout fixed-mode regulator with en function
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