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Datasheet File OCR Text: |
e l ek tr on isch e b a u e lemen te s 5j21 8 8 1.5a cmos low dropout voltage regulator * adjustable version f e a t u r e s * low temperature coefficient * over-temperature shutdown * very low dropout voltage * high accurate 1.5% * short circuit current fold-back * guaranteed 1.5 a output * current limiting * portable electronics applications * pc peripherals * wireless devices * battery powered widgets * instrumentation typical application circuit functional block diagram * power-saving shutdown mode the s 5j21 8 8 is stable with an output capacitance of 4.7 m f or greater. the s 5j21 8 8 of positive,linear regulators feature low quiescent current ( 45 m a typ.) with low dropout voltage, making them ideal f or battery applications. output voltage are set at the factory and trimmed to 1.5% accuracy.these rugged devices have both thermal shutdown and current fold-back to prevent device failure under the "worst" of operating conditions. an additional feature is a "power good" detector, which pulls low when the output is out of regulation. description 01 -jun-2002 rev. a page 1 of 7 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 ref. min. max. ref. min. max. a 6.35 6.73 g 0.45 0.60 b 5.21 5.46 h 2.20 2.40 c 9.40 10.20 j 0.46 0.58 d 2.40 3.00 k 0 0.15 p 1.27 ref. l 0.90 1.50 s 0.50 0.80 m 5.40 5.59 millimeter millimeter s5j218 8
h t t p : / / w w w . s e c o s g m b h . c o m / o c) power dissipation ( input voltage output current output voltage operating ambient temperature junction temperature parameter symbo l ratings unit v ma v c w 1 . 2 v in i out tj max. 8 p d /(v in -v o ) -40~+125 g n d - 0 . 3 ~ v i n + 0 . 3 - 4 0 ~ + 8 5 o max. junction temperature t=100 eds classification v out topr tj p d 150 b c o c o a b s o l u t e m a x i m u m r a t i n g 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 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 7 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 v i n = v o u t ( t ) + 2 v , v en = v i n , t a = 2 5 : u n l e s s o t h e rw i s e pa r a m e te r sy m b o l c o n d i t i o n m i n t y p m a x u n i t o u t p u t v o l t a g e v o u t (e) (n o t e 1 ) v e n = v e h m i n , i o = 1 m a - 1 . 5 % v o u t ( t ) (n o t e 2 ) 1 . 5 % v o u t p u t c u rre n t i o v o u t > 1 . 2 v 1 . 5 - - a c u rre n t l i m i t i l i m v o u t > 1 . 2 v 1 . 5 2 . 0 - a l o a d r e g u l a t i o n r eg l o a d i o = 1 m a t o 1 . 5 a - 1 0 . 2 1 % 1 . 5 v < v o u t ( t ) 2 . 0 v - - 1 3 0 0 2 . 0 v < v o u t ( t ) 2 . 8 v - - 8 0 0 d ro p o u t v o l t a g e v d r o p o u t i o = 1 . 5 a v o = v o u t ( e ) - 2 % 2 . 8 v < v o u t ( t ) - - 6 0 0 m v g ro u n d pi n c u rre n t i g n d i o = 1 m a ~ 1 . 5 a - 4 5 - a v o u t ( t ) < 2 . 0 v - 0 . 1 5 - 0 . 1 5 2 . 0 v v o u t ( t ) < 4 . 0 v - 0 . 1 0 . 0 2 0 . 1 l i n e r e g u l a t i o n r eg l i n e i o = 1 m a v i n = v o u t ( t ) + 1 t o v o u t ( t ) + 2 4 . 0 v v o u t ( t ) - 0 . 4 - 0 . 4 % i n p u t v o l t a g e v i n n o t e 3 - 7 v o ve r t e m p e r a t u r e s h u t d o w n o t s - 1 5 0 - : o ve r t e m p e r a t u r e h y st e r i si s o t h - 3 0 - : o u t p u t v o l t a g e t e m p e ra t u re c o e f f i ci e n t t c - 3 0 - p p m / : sh o rt c i rcu i t c u rre n t i s c v o u t < 0 . 4 v - 7 5 0 - m a ad j i n p u t bi a s c u rre n t i a d j v i n = 5 v , v a d j = 1 . 2 4 2 v - 1 - a m i n i m u m l o a d c u rre n t i m i n 1 - - m a ad j r e f e re n ce v o l t a g e v r e f 1 . 2 2 3 1 . 2 4 2 1 . 2 6 1 v f = 1 kh z - 5 0 - po w e r su p p l y r e j e ct i o n psr r i o = 1 0 0 m a c o = 4 . 7 f c e r a m i c f = 1 0 kh z - 2 0 - d b o u t p u t v o l t a g e n o i s e e n f = 1 0 h z ~ 1 0 0 kh z i o = 1 0 m a , c o = 4 . 7 f - 3 0 - v r m s v e h v i n = 2 . 7 v t o 7 v 2 . 0 - v i n v en i n p u t t h re s h o l d v e l v i n = 2 . 7 v t o 7 v 0 - 0 . 4 v i e h v i n = 7 v - - 0 . 1 a en i n p u t b i a s c u rre n t i e l v e n = 0 v , v i n = 7 v - - 0 . 5 a sh u t d o w n su p p l y c u rre n t i s d v i n = 5 v , v o u t = 0 v , v e n = 0 v - 0 . 5 2 a n o t e 1 : v o u t ( e) = ef f e c t i v e o u t p u t v o l t a g e ( i . e . t h e o u t p u t v o l t a g e w h e n v o u t (t ) + 2 . 0 v i s p r o v i d e d a t t h e vi n p i n w h i l e m a i n t a i n i n g a c e rt a i n i o u t v a l u e ). 2 : v o u t (t ) = s p e c i f i e d o u t p u t v o l t a g e 3 : v i n ( m i n ) = v o u t + v d r o p o u t s 5j 21 8 8 1. 5a cmos low dropout voltage regulator 01-jun-2002 rev. a page 3 of 7 h t t p : / / w w w .s e c o sg m b h .c o m/ a n y c ha n g i n g o f s pe c if i c a t i o n w ill no t b e i n f o r m ed i nd i v i dual 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 5 j 2 1 88 - a dj p a r t n u m b e r m a r k i n g o u t p u t v o l t a g e p a r t n u m b e r m a r k i n g o u t p u t v o l t a g e 8h ad2 a d j u s t a b l e x x x x o r d e r i n g i n f o r m a t i o n ( c o n t d . ) d e t a i l e d d e s c r i p t i o n t h e s 5 j 2 1 8 8 o f c o m s r e g u l a t o r c o n t a i n s a p m o s p a s s t r a n s i s t o r , v o l t a g e r e f e r e n c e , e r r o r a m p l i f i e r , o v e r - c u r r e n t p r o t e c t i o n , a n d t h e r m a l s h u t d o w n . t h e p - c h a n n e l p a s s t r a n s i s t o r r e c e i v e s d a t a f r o m t h e e r r o r a m p l i f i e r , o v e r - c u r r e n t s h u t d o w n , a n d t h e r m a l p r o t e c t i o n c i r c u i t s . d u r i n g n o r m a l o p e r a t i o n , t h e e r r o r a m p l i f i e r c o m p a r e s t h e o u t p u t v o l t a g e t o a p r e c i s i o n r e f e r e n c e . o v e r - c u r r e n t a n d t h e r m a l s h u t d o w n c i r c u i t s b e c o m e a c t i v e w h e n t h e j u n c t i o n t e m p e r a t u r e e x c e e d s 1 4 0 : , o r t h e c u r r e n t e x c e e d s 2 . 2 a . d u r i n g t h e r m a l s h u t d o w n , t h e o u t p u t v o l t a g e r e m a i n s l o w . n o r m a l o p e r a t i o n i s r e s t o r e d w h e n t h e j u n c t i o n t e m p e r a t u r e d r o p s b e l o w 1 2 0 : . t h e s 5 j 2 1 8 8 b e h a v e s l i k e a c u r r e n t s o u r c e w h e n t h e l o a d r e a c h e s 2 . 2 a . h o w e v e r , i f t h e l o a d i m p e d a n c e d r o p s b e l o w 0 . 3 , t h e c u r r e n t d r o p s b a c k t o 6 0 0 m a t o p r e v e n t e x c e s s i v e p o w e r d i s s i p a t i o n . n o r m a l o p e r a t i o n i s r e s t o r e d w h e n t h e l o a d r e s i s t a n c e e x c e e d s 0 . 7 5 . e x t e r n a l c a p a c i t o r s t h e s 5 j 2 1 8 8 i s s t a b l e w i t h a n o u t p u t c a p a c i t a n c e t o g r o u n d o f 4 . 7 f o r g r e a t e r . c e r a m i c c a p a c i t o r s h a v e t h e l o w e s t e s r , a n d w i l l o f f e r t h e b e s t a c p e r f o r m a n c e . c o n v e r s e l y , a l u m i n u m e l e c t r o l y t i c c a p a c i t o r s e x h i b i t t h e h i g h e s t e s r , r e s u l t i n g i n t h e p o o r e s t a c r e s p o n s e . u n f o r t u n a t e l y , l a r g e v a l u e c e r a m i c c a p a c i t o r s a r e c o m p a r a t i v e l y e x p e n s i v e . o n e o p t i o n i s t o p a r a l l e l a 0 . 1 f c e r a m i c c a p a c i t o r w i t h a 1 0 f a l u m i n u m e l e c t r o l y t i c . t h e b e n e f i t i s l o w e s r , h i g h c a p a c i t a n c e , a n d l o w o v e r a l l c o s t . a s e c o n d c a p a c i t o r i s r e c o m m e n d e d b e t w e e n t h e i n p u t a n d g r o u n d t o s t a b i l i z e v i n . t h e i n p u t c a p a c i t o r s h o u l d b e a t l e a s t 0 . 1 f t o h a v e a b e n e f i c i a l e f f e c t . a l l c a p a c i t o r s s h o u l d b e p l a c e d i n c l o s e p r o x i m i t y t o t h e p i n s . a q u i e t g r o u n d t e r m i n a t i o n i s d e s i r a b l e . t h i s c a n b e a c h i e v e d w i t h a s t a r c o n n e c t i o n . e n a b l e w h e n p u l l e d l o w , t h e p m o s p a s s t r a n s i s t o r s h u t s o f f , a n d a l l i n t e r n a l c i r c u i t s a r e p o w e r e d d o w n . i n t h i s s t a t e , t h e q u i e s c e n t c u r r e n t i s l e s s t h a n 1 a . t h i s p i n b e h a v e s m u c h l i k e a n e l e c t r o n i c s w i t c h . 1 0 0 k r e s i s t o r i s n e c e s s a r y b e t w e e n v e n s o u r c e a n d e n p i n w h e n v e n i s h i g h e r t h a n v i n . ( n o t e : t h e r e i s n o i n t e r n a l p u l l - u p f o r e n p i n ) a d j u s t a b l e v e r s i o n t h e a d j u s t a b l e v e r s i o n u s e s e x t e r n a l f e e d b a c k r e s i s t o r s t o g e n e r a t e a n o u t p u t v o l t a g e a n y w h e r e f r o m 1 . 5 v t o 5 . 0 v . v a d j i s t r i m m e d t o 1 . 2 4 2 v a n d v o u t i s g i v e n b y t h e e q u a t i o n : v o u t = v a d j * ( 1 + r 1 / r 2 ) f e e d b a c k r e s i s t o r s r 1 a n d r 2 s h o u l d b e h i g h e n o u g h t o k e e p q u i e s c e n t c u r r e n t l o w , b u t i n c r e a s i n g r 1 + r 2 w i l l r e d u c e s t a b i l i t y . i n g e n e r a l , r 1 a n d r 2 i n t h e 1 0 s o f k w i l l p r o d u c e a d e q u a t e s t a b i l i t y , g i v e n r e a s o n a b l e l a y o u t p r e c a u t i o n s . t o i m p r o v e s t a b i l i t y c h a r a c t e r i s t i c s , k e e p p a r a s i t i c o n t h e a d j p i n t o m i n i m u m , a n d l o w e r r 1 a n d r 2 v a l u e s . s 5j 21 8 8 1. 5a cmos low dropout voltage regulator e l ek tr on isch e b a u e lemen te 01 -jun-2002 rev. a page 4 of 7 http://www.secosgmbh.com/ any changing of specification will not be informed individual c h a r a c t e r i s t i c s c u r v e s 5j 21 8 8 1. 5a cmos low dropout voltage regulator 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 5 of 7 s 5j 21 8 8 1. 5a cmos low dropout voltage regulator 0 1 - j u n - 2 0 0 2 r e v . a p a g e 6 o f 7 h t t p : / / w w w .s e c o sg m b h .c o m/ a n y c ha n g i n g o f s pe c if i c a t i o n w ill no t b e i n f o r m ed i nd i v i dual 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 5j 21 8 8 1. 5a cmos low dropout voltage regulator 0 1 - j u n - 2 0 0 2 r e v . a p a g e 7 of 7 h t t p : / / w w w .s e c o sg m b h .c o m/ a n y c ha n g i n g o f s pe c if i c a t i o n w ill no t b e i n f o r m ed i nd i v i dual e l e k t r o n i s c h e b a u e l e m e n t e e x t e r n a l r e s i s t o r d i v i d e r t a b l e r 1 ( k ) 1 2 5 1 0 2 0 5 0 r 1 ( k ) 1 2 5 1 0 2 0 5 0 v o u t r 2 ( k ) = ( 1 . 2 4 2 * r 1 ( k ) ) / ( v o u t - 1 . 2 4 2 ) v o u t r 2 ( k ) = ( 1 . 2 4 2 * r 1 ( k ) ) / ( v o u t - 1 . 2 4 2 ) 1 . 3 0 2 1 . 4 1 4 2 . 8 3 1 0 7 . 0 7 2 1 4 . 1 4 4 2 8 . 2 8 1 0 7 0 . 7 3 . 2 0 0 . 6 3 1 . 2 7 3 . 1 7 6 . 3 4 1 2 . 6 9 3 1 . 7 2 1 . 3 5 1 1 . 5 0 2 3 . 0 0 5 7 . 5 0 1 1 5 . 0 0 2 3 0 . 0 0 5 7 5 . 0 0 3 . 2 5 0 . 6 2 1 . 2 4 3 . 0 9 6 . 1 9 1 2 . 3 7 3 0 . 9 3 1 . 4 0 7 . 8 6 1 5 . 7 2 3 9 . 3 0 7 8 . 6 1 1 5 7 . 2 2 3 9 3 . 0 4 3 . 3 0 0 . 6 0 1 . 2 1 3 . 0 2 6 . 0 3 1 2 . 0 7 3 0 . 1 7 1 . 4 5 5 . 9 7 1 1 . 9 4 2 9 . 8 6 5 9 . 7 1 1 1 9 . 4 2 2 9 8 . 5 6 3 . 3 5 0 . 5 9 1 . 1 8 2 . 9 5 5 . 8 9 1 1 . 7 8 2 9 . 4 6 1 . 5 0 4 . 8 1 9 . 6 3 2 4 . 0 7 4 8 . 1 4 9 6 . 2 8 2 4 0 . 7 0 3 . 4 0 0 . 5 8 1 . 1 5 2 . 8 8 5 . 7 6 1 1 . 5 1 2 8 . 7 8 1 . 5 5 4 . 0 3 8 . 0 6 2 0 . 1 6 4 0 . 3 2 8 0 . 6 5 2 0 1 . 6 2 3 . 4 5 0 . 5 6 1 . 1 3 2 . 8 1 5 . 6 3 1 1 . 2 5 2 8 . 1 3 1 . 6 0 3 . 4 7 6 . 9 4 1 7 . 3 5 3 4 . 6 9 6 8 . 3 9 1 7 3 . 4 6 3 . 5 0 0 . 5 5 1 . 1 0 2 . 7 5 5 . 5 0 1 1 . 0 0 2 7 . 5 0 1 . 6 5 3 . 0 4 6 . 0 9 1 5 . 2 2 3 0 . 4 4 6 0 . 8 8 1 5 2 . 2 1 3 . 5 5 0 . 5 4 1 . 0 8 2 . 6 9 5 . 3 8 1 0 . 7 6 2 6 . 9 1 1 . 7 0 2 . 7 1 5 . 4 2 1 3 . 5 6 2 7 . 1 2 5 4 . 2 4 1 3 5 . 5 9 3 . 6 0 0 . 5 3 1 . 0 5 2 . 6 3 5 . 2 7 1 0 . 5 3 2 6 . 3 4 1 . 7 5 2 . 4 4 4 . 8 9 1 2 . 2 2 2 4 . 4 5 4 8 . 9 0 1 2 2 . 2 4 3 . 6 5 0 . 5 2 1 . 0 3 2 . 5 8 5 . 1 6 1 0 . 3 2 2 5 . 7 9 1 . 8 0 2 . 2 3 4 . 4 5 1 1 . 1 3 2 2 . 2 6 4 4 . 5 2 1 1 1 . 2 9 3 . 7 0 0 . 5 1 1 . 0 1 2 . 5 3 5 . 0 5 1 0 . 1 1 2 5 . 2 6 1 . 8 5 2 . 0 4 4 . 0 9 1 0 . 2 1 2 0 . 4 3 4 0 . 8 6 1 0 2 . 1 4 3 . 7 5 0 . 5 0 0 . 9 9 2 . 4 8 4 . 9 5 9 . 9 0 2 4 . 7 6 1 . 9 0 1 . 8 9 3 . 7 8 9 . 4 4 1 8 . 8 8 3 7 . 7 5 9 4 . 3 8 3 . 8 0 0 . 4 9 0 . 9 7 2 . 4 3 4 . 8 6 9 . 7 1 2 4 . 2 8 1 . 9 5 1 . 7 5 3 . 5 1 8 . 7 7 1 7 . 5 4 3 5 . 0 8 8 7 . 7 1 3 . 8 5 0 . 4 8 0 . 9 5 2 . 3 8 4 . 7 6 9 . 5 2 2 3 . 8 1 2 . 0 0 1 . 6 4 3 . 2 8 8 . 1 9 1 6 . 3 9 3 2 . 7 7 8 1 . 9 3 3 . 9 0 0 . 4 7 0 . 9 3 2 . 3 4 4 . 6 7 9 . 3 5 2 3 . 3 6 2 . 0 5 1 . 5 4 3 . 0 7 7 . 6 9 1 5 . 3 7 3 0 . 7 4 7 6 . 8 6 3 . 9 5 0 . 4 6 0 . 9 2 2 . 2 9 4 . 5 9 9 . 1 7 2 2 . 9 3 2 . 1 0 1 . 4 5 2 . 9 0 7 . 2 4 1 4 . 4 8 2 8 . 9 5 7 2 . 3 8 4 . 0 0 0 . 4 5 0 . 9 0 2 . 2 5 4 . 5 0 9 . 0 1 2 2 . 5 2 2 . 1 5 1 . 3 7 2 . 7 4 6 . 8 4 1 3 . 6 8 2 7 . 3 6 6 8 . 3 9 4 . 0 5 0 . 4 4 0 . 8 8 2 . 2 1 4 . 4 2 8 . 8 5 2 2 . 1 2 2 . 2 0 1 . 3 0 2 . 5 9 6 . 4 8 1 2 . 9 6 2 5 . 9 3 6 4 . 8 2 4 . 1 0 0 . 4 3 0 . 8 7 2 . 1 7 4 . 3 5 8 . 6 9 2 1 . 7 3 2 . 2 5 1 . 2 3 2 . 4 6 6 . 1 6 1 2 . 3 2 2 4 . 6 5 6 1 . 6 1 4 . 1 5 0 . 4 3 0 . 8 5 2 . 1 4 4 . 2 7 8 . 5 4 2 1 . 3 5 2 . 3 0 1 . 1 7 2 . 3 5 5 . 8 7 1 1 . 7 4 2 3 . 4 8 5 8 . 7 0 4 . 2 0 0 . 4 2 0 . 8 4 2 . 1 0 4 . 2 0 8 . 4 0 2 0 . 9 9 2 . 3 5 1 . 1 2 2 . 2 4 5 . 6 0 1 1 . 2 1 2 2 . 4 2 5 6 . 0 5 4 . 2 5 0 . 4 1 0 . 8 3 2 . 0 6 4 . 1 3 8 . 2 6 2 0 . 6 4 2 . 4 0 1 . 0 7 2 . 1 5 5 . 3 6 1 0 . 7 3 2 1 . 4 5 5 3 . 6 3 4 . 3 0 0 . 4 1 0 . 8 1 2 . 0 3 4 . 0 6 8 . 1 2 2 0 . 3 1 2 . 4 5 1 . 0 3 2 . 0 6 5 . 1 4 1 0 . 2 8 2 0 . 5 6 5 1 . 4 1 4 . 3 5 0 . 4 0 0 . 8 0 2 . 0 0 4 . 0 0 7 . 9 9 1 9 . 9 8 2 . 5 0 0 . 9 9 1 . 9 7 4 . 9 4 9 . 8 7 1 9 . 7 5 4 9 . 3 6 4 . 4 0 0 . 3 9 0 . 7 9 1 . 9 7 3 . 9 3 7 . 8 7 1 9 . 6 6 2 . 5 5 0 . 9 5 1 . 9 0 4 . 7 5 9 . 5 0 1 8 . 9 9 4 7 . 4 8 4 . 4 5 0 . 3 9 0 . 7 7 1 . 9 4 3 . 8 7 7 . 7 4 1 9 . 3 6 2 . 6 0 0 . 9 1 1 . 8 3 4 . 5 7 9 . 1 5 1 8 . 2 9 4 5 . 7 3 4 . 5 0 0 . 3 8 0 . 7 6 1 . 9 1 3 . 8 1 7 . 6 2 1 9 . 0 6 2 . 6 5 0 . 8 8 1 . 7 6 4 . 4 1 8 . 8 2 1 7 . 6 4 4 4 . 1 1 4 . 5 5 0 . 3 8 0 . 7 5 1 . 8 8 3 . 7 5 7 . 5 1 1 8 . 7 7 2 . 7 0 0 . 8 5 1 . 7 0 4 . 2 6 8 . 5 2 1 7 . 0 4 4 2 . 5 9 4 . 6 0 0 . 3 7 0 . 7 4 1 . 8 5 3 . 7 0 7 . 4 0 1 8 . 4 9 2 . 7 5 0 . 8 2 1 . 6 5 4 . 1 2 8 . 2 4 1 6 . 4 7 4 1 . 1 8 4 . 6 5 0 . 3 6 0 . 7 3 1 . 8 2 3 . 6 4 7 . 2 9 1 8 . 2 2 2 . 8 0 0 . 8 0 1 . 5 9 3 . 9 9 7 . 9 7 1 5 . 9 4 3 9 . 8 6 4 . 7 0 0 . 3 6 0 . 7 2 1 . 8 0 3 . 5 9 7 . 1 8 1 7 . 9 6 2 . 8 5 0 . 7 7 1 . 5 4 3 . 8 6 7 . 7 2 1 5 . 4 5 3 8 . 6 2 4 . 7 5 0 . 3 5 0 . 7 1 1 . 7 7 3 . 5 4 7 . 0 8 1 7 . 7 0 2 . 9 0 0 . 7 5 1 . 5 0 3 . 7 5 7 . 4 9 1 4 . 9 8 3 7 . 4 5 4 . 8 0 0 . 3 5 0 . 7 0 1 . 7 5 3 . 4 9 6 . 9 8 1 7 . 4 5 2 . 9 5 0 . 7 3 1 . 4 5 3 . 6 4 7 . 2 7 1 4 . 5 4 3 6 . 3 6 4 . 8 5 0 . 3 4 0 . 6 9 1 . 7 2 3 . 4 4 6 . 8 8 1 7 . 2 1 3 . 0 0 0 . 7 1 1 . 4 1 3 . 5 3 7 . 0 6 1 4 . 1 3 3 5 . 3 2 4 . 9 0 0 . 3 4 0 . 6 8 1 . 7 0 3 . 4 0 6 . 7 9 1 6 . 9 8 3 . 0 5 0 . 6 9 1 . 3 7 3 . 4 3 6 . 8 7 1 3 . 7 4 3 4 . 3 5 4 . 9 5 0 . 3 3 0 . 6 7 1 . 6 7 3 . 3 5 6 . 7 0 1 6 . 7 5 3 . 1 0 0 . 6 7 1 . 3 4 3 . 3 4 6 . 6 8 1 3 . 3 7 3 3 . 4 2 5 . 0 0 0 . 3 3 0 . 6 6 1 . 6 5 3 . 3 0 6 . 6 1 1 6 . 5 2 3 . 1 5 0 . 6 5 1 . 3 0 3 . 2 5 6 . 5 1 1 3 . 0 2 3 2 . 5 5 n o t e : s m a l l l o a d ( g r e a t e r t h a n 2 m a ) i s n e c e s s a r y a s r 1 o r r 2 i s l a r g e r t h a n 5 0 k . o t h e r w i s e , o u t p u t v o l t a g e p r o b a b l y c a n n o t b e p u l l e d d o w n t o 0 v o n d i s a b l e m o d e . [ [ [ [ [ [ [ s 5j 21 8 8 1. 5a cmos low dropout voltage regulator |
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