e l ek tr on isch e b a u e lemen te s 5j21 87 750ma cmos positive voltage regulator * power good output function f e a t u r e s * low temperature coefficient * over-temperature shutdown * very low dropout voltage * noise reduction bypass capacitor * short circuit current fold-back * guaranteed 75 0ma 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 7 is stable with an output capacitance of 4.7 m f or greater. the s 5j21 8 7 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 S5J2187
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 t a = 2 5 u n l e ss o t h e r w i se n o t e d ( v i n = v o u t ( t ) + 2 v , v e n = v i n , c i n = 1 u f , c o u t = 4 . 7 u f ) 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 yp 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 ) i o = 1 m a , v i n = v o u t ( t ) + 2 v - 1 . 5 v o u t ( t ) (n o t e 2 ) 1 . 5 % o u t p u t c u rre n t i o v o > 1 . 2 v 7 5 0 - - m a c u rre n t l i m i t i l i m v o > 1 . 2 v 7 5 0 - - m a sh o rt c i rcu i t c u rre n t i s c v i n = v o u t ( t ) + 1 v , v o < 0 . 4 v - 7 5 0 - m a l o a d r e g u l a t i o n r eg l o a d v i n = v o u t ( t ) + 2 v , i o = 1 m a t o 7 5 0 m a - 1 0 . 2 1 % v o u t ( t ) = 1 . 5 v - - 1 0 0 0 v o u t ( t ) = 1 . 8 v - - 6 5 0 d ro p o u t v o l t a g e v d r o p o u t i o = 7 5 0 m a v o = v o u t ( e ) - 2 % v o u t ( t ) 2 . 0 v - - 5 0 0 m v q u i e s ce n t c u rre n t i q v i n = v o u t ( t ) + 2 v , i o = 0 m a - 4 5 7 0 a g ro u n d pi n c u rre n t i g n d v i n = v o u t ( t ) + 2 v , i o = 1 m a t o 7 5 0 m 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 / : ad j i n p u t bi a s c u rre n t i a d j - 1 - a m i n i m u m l o a d c u rre n t i l o a d v i n = 2 . 5 v - - 7 0 a ad j r e f e re n ce v o l t a g e v r e f 1 . 2 2 1 1 . 2 4 0 1 . 2 6 v f = 1 kh z - 7 5 - f = 1 0 kh z - 5 5 - 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 ( ce r a m i c ) f = 1 0 0 kh z - 3 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 e n = v i n , v i n = 2 . 7 v t o 7 v - - 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 = 2 . 7 v t o 7 v - - 1 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 = 0 v , v e n < v e l - 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 v i 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 7 750ma cmos positive 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 8 7 - a d 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 7 h a d 2 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 j2 1 8 7 o f c o m s re g u l a t o r co n t a i n s a pm o s p a s s t ra n s i s t o r , v o l t a g e re f e re n ce , e rro r a m p l i f i e r , o v e r- cu rre n t p ro t e ct 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-ch a n n e l p a s s t ra n s i s t o r re ce i v e s d a t a f ro m t h e e rro r a m p l i f i e r , o v e r-cu rre n t s h u t d o w n , a n d t h e rm a l p ro t e ct i o n c i rcu i t s . d u ri n g n o r m a l o p e ra t i o n , t h e e rro r a m p l i f i e r co m p a re s t h e o u t p u t v o l t a g e t o a p re ci s i o n re f e re n ce . o v e r- cu rre n t a n d t h e r m a l s h u t d o w n ci rcu i t s b e co m e a ct i v e w h e n t h e j u n ct i o n t e m p e ra t u re e x ce e d s 1 4 0 : , o r t h e cu rre n t e x ce e d s 2 . 2 a. d u ri 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 re m a i n s l o w . n o r m a l o p e ra t i o n i s re s t o re d w h e n t h e j u n ct i o n t e m p e ra t u re d ro p s b e l o w 1 2 0 : . t h e s 5 j2 1 8 7 b e h a v e s l i ke a cu rre n t s o u rce w h e n t h e l o a d re a ch 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 ro p s b e l o w 0 . 3 o h m s , t h e cu rre n t d ro p s b a ck t o 6 0 0 m a t o p re v e n t e x ce 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 ra t i o n i s re s t o re d w h e n t h e l o a d re s i s t a n ce e x ce e d s 0 . 7 5 o h m s . e x t e r n a l c a p a c i t o r s t h e s 5 j2 1 8 7 i s s t a b l e w i t h a n o u t p u t ca p a ci t a n ce t o g ro u n d o f 4 . 7 f o r g re a t e r . c e ra m i c ca p a ci t o rs h a v e t h e l o w e s t esr , a n d w i l l o f f e r t h e b e s t ac p e r f o r m a n ce . c o n v e rs e l y , al u m i n u m el e c t ro l yt i c ca p a ci t o rs e x h i b i t t h e h i g h e s t esr , re s u l t i n g i n t h e p o o re s t ac re s p o n se . u n f o r t u n a t e l y , l a rg e v a l u e ce ra m i c ca p a ci t o rs a r e co m p a ra 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 ra l l e l a 0 . 1 f ce ra m i c ca p a ci t o r w i t h a 1 0 u f a l u m i n u m e l e ct ro l y t i c . t h e b e n e f i t i s l o w esr , h i g h ca p a ci t a n ce , a n d l o w o v e r a l l co s t . a s e co n d ca p a ci t o r i s re co 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 ro u n d t o s t a b i l i ze v i n . t h e i n p u t ca p a ci 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 . al l ca p a ci t o rs s h o u l d b e p l a ce d i n c l o s e p ro x i m i t y t o t h e p i n s . a q u i e t g ro u n d t e r m i n a t i o n i s d e s i ra b l e . t h i s ca n b e a ch i e v e d w i t h a s t a r co n n e ct i o n . e n a b l e w h e n en p i n i s p u l l e d l o w , t h e pm o s p a ss t ra 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 rn a l c i rcu i t s a re p o w e re d d o w n . i n t h i s s t a t e , t h e q u i e s ce n t cu rre n t i s l e s s t h a n 2 a. t h i s p i n b e h a v e s m u ch l i ke a n e l e c t ro n i c s w i t ch . 1 0 0 k re s i s t o r i s n e ce ss a ry b e t w e e n v en s o u rce a n d en p i n w h e n v en i s h i g h 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 en p i n . i t c a n n o t b e f l o a t i n g . ) 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 rs i o n u s e s e x t e rn a l f e e d b a ck re s i s t o r s t o g e n e ra t e a n o u t p u t v o l t a g e a n yw h e re f ro 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 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 ck re s i s t o rs 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 ke e p q u i e s ce n t cu rre n t l o w , b u t i n c re a s i n g r 1 + r 2 w i l l re d u ce s t a b i l i t y . i n g e n e ra l , r 1 a n d r 2 i n t h e 1 0 s o f k w i l l p ro d u ce a d e q u a t e s t a b i l i t y , g i v e n re a s o n a b l e l a yo u t p re ca u t i o n s . t o i m p ro v e s t a b i l i t y ch a ra c t e ri s t i cs , ke e p p a ra s i t i c o n t h e ad 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 7 750ma cmos positive 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 7 750ma cmos positive 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 7 750ma cmos positive 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 7 750ma cmos positive 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 10 20 r1 (k ) 1 2 5 1 0 2 0 v o u t r 2 ( k )=(1.24*r1(k ))/(v out -1.24) v o u t r 2 ( k )=(1.242*r1(k ))/(v out -1.242) 1 . 3 0 2 0 . 6 7 4 1 . 3 3 1 0 3 . 3 3 2 0 6 . 6 7 4 1 3 . 3 3 3 . 2 0 0 . 6 3 1 . 2 7 3 . 1 6 6 . 3 3 1 2 . 6 5 1 . 3 5 1 1 . 2 7 2 2 . 5 5 5 6 . 3 6 1 1 2 . 7 3 2 2 5 . 4 5 3 . 2 5 0 . 6 2 1 . 2 3 3 . 0 8 6 . 1 7 1 2 . 3 4 1 . 4 0 7 . 7 5 1 5 . 5 0 3 8 . 7 5 7 7 . 5 0 1 5 5 . 0 0 3 . 3 0 0 . 6 0 1 . 2 0 3 . 0 1 6 . 0 2 1 2 . 0 4 1 . 4 5 5 . 9 0 1 1 . 8 1 2 9 . 5 2 5 9 . 0 5 1 1 8 . 1 0 3 . 3 5 0 . 5 9 1 . 1 8 2 . 9 4 5 . 8 8 1 1 . 7 5 1 . 5 0 4 . 7 7 9 . 5 4 2 3 . 8 5 4 7 . 6 9 9 5 . 3 8 3 . 4 0 0 . 5 7 1 . 1 5 2 . 8 7 5 . 7 4 1 1 . 4 8 1 . 5 5 4 . 0 0 8 . 0 0 2 0 . 0 0 4 0 . 0 0 8 0 . 0 0 3 . 4 5 0 . 5 6 1 . 1 2 2 . 8 1 5 . 6 1 1 1 . 2 2 1 . 6 0 3 . 4 4 6 . 8 9 1 7 . 2 2 3 4 . 4 4 6 8 . 8 9 3 . 5 0 0 . 5 5 1 . 1 0 2 . 7 4 5 . 4 9 1 0 . 9 7 1 . 6 5 3 . 0 2 6 . 0 5 1 5 . 1 2 3 0 . 2 4 6 0 . 4 9 3 . 5 5 0 . 5 4 1 . 0 7 2 . 6 8 5 . 3 7 1 0 . 7 4 1 . 7 0 2 . 7 5 . 3 9 1 3 . 4 8 2 6 . 9 6 5 3 . 9 1 3 . 6 0 0 . 5 3 1 . 0 5 2 . 6 3 5 . 2 5 1 0 . 5 1 1 . 7 5 2 . 4 3 4 . 8 6 1 2 . 1 6 2 4 . 3 1 4 8 . 6 3 3 . 6 5 0 . 5 1 1 . 0 3 2 . 5 7 5 . 1 5 1 0 . 2 9 1 . 8 0 2 . 2 1 4 . 4 3 1 1 . 0 7 2 2 . 1 4 4 4 . 2 9 3 . 7 0 0 . 5 0 1 . 0 1 2 . 5 2 5 . 0 4 1 0 . 0 8 1 . 8 5 2 . 0 3 4 . 0 7 1 0 . 1 6 2 0 . 3 3 4 0 . 6 6 3 . 7 5 0 . 4 9 0 . 9 9 2 . 4 7 4 . 9 4 9 . 8 8 1 . 9 0 1 . 8 8 3 . 7 6 9 . 3 9 1 8 . 7 9 3 7 . 5 8 3 . 8 0 0 . 4 8 0 . 9 7 2 . 4 2 4 . 8 4 9 . 6 9 1 . 9 5 1 . 7 5 3 . 4 9 8 . 7 3 1 7 . 4 6 3 4 . 9 3 3 . 8 5 0 . 4 8 0 . 9 5 2 . 3 8 4 . 7 5 9 . 5 0 2 . 0 0 1 . 6 3 3 . 2 6 8 . 1 6 1 6 . 3 2 3 2 . 6 3 3 . 9 0 0 . 4 7 0 . 9 3 2 . 3 3 4 . 6 6 9 . 3 2 2 . 0 5 1 . 5 3 3 . 0 6 7 . 6 5 1 5 . 3 1 3 0 . 6 2 3 . 9 5 0 . 4 6 0 . 9 2 2 . 2 9 4 . 5 8 9 . 1 5 2 . 1 0 1 . 4 4 2 . 8 8 7 . 2 1 1 4 . 4 2 2 8 . 8 4 4 . 0 0 0 . 4 5 0 . 9 0 2 . 2 5 4 . 4 9 8 . 9 9 2 . 1 5 1 . 3 6 2 . 7 3 6 . 8 1 1 3 . 6 3 2 7 . 2 5 4 . 0 5 0 . 4 4 0 . 8 8 2 . 2 1 4 . 4 1 8 . 8 3 2 . 2 0 1 . 2 9 2 . 5 8 6 . 4 6 1 2 . 9 2 2 5 . 8 3 4 . 1 0 0 . 4 3 0 . 8 7 2 . 1 7 4 . 3 4 8 . 6 7 2 . 2 5 1 . 2 3 2 . 4 6 6 . 1 4 1 2 . 2 8 2 4 . 5 5 4 . 1 5 0 . 4 3 0 . 8 5 2 . 1 3 4 . 2 6 8 . 5 2 2 . 3 0 1 . 1 7 2 . 3 4 5 . 8 5 1 1 . 7 0 2 3 . 4 0 4 . 2 0 0 . 4 2 0 . 8 4 2 . 0 9 4 . 1 9 8 . 3 8 2 . 3 5 1 . 1 2 2 . 2 3 5 . 5 9 1 1 . 1 7 2 3 . 3 4 4 . 2 5 0 . 4 1 0 . 8 2 2 . 0 6 4 . 1 2 8 . 2 4 2 . 4 0 1 . 0 7 2 . 1 4 5 . 3 4 1 0 . 6 9 2 1 . 3 8 4 . 3 0 0 . 4 1 0 . 8 1 2 . 0 3 4 . 0 5 8 . 1 0 2 . 4 5 1 . 0 2 2 . 0 5 5 . 1 2 1 0 . 2 5 2 0 . 5 0 4 . 3 5 0 . 4 0 0 . 8 0 1 . 9 9 3 . 9 9 7 . 9 7 2 . 5 0 0 . 9 8 1 . 9 7 4 . 9 2 9 . 8 4 1 9 . 6 8 4 . 4 0 0 . 3 9 0 . 7 8 1 . 9 6 3 . 9 2 7 . 8 5 2 . 5 5 0 . 9 5 1 . 8 9 4 . 7 3 9 . 4 7 1 8 . 9 3 4 . 4 5 0 . 3 9 0 . 7 7 1 . 9 3 3 . 8 6 7 . 7 3 2 . 6 0 0 . 9 1 1 . 8 2 4 . 5 6 9 . 1 2 1 8 . 2 4 4 . 5 0 0 . 3 8 0 . 7 6 1 . 9 0 3 . 8 0 7 . 6 1 2 . 6 5 0 . 8 8 1 . 7 6 4 . 4 0 8 . 7 9 1 7 . 5 9 4 . 5 5 0 . 3 7 0 . 7 5 1 . 8 7 3 . 7 5 7 . 4 9 2 . 7 0 0 . 8 5 1 . 7 0 4 . 2 5 8 . 4 9 1 6 . 9 9 4 . 6 0 0 . 3 7 0 . 7 4 1 . 8 5 3 . 6 9 7 . 3 8 2 . 7 5 0 . 8 2 1 . 6 4 4 . 1 1 8 . 2 1 1 6 . 4 2 4 . 6 5 0 . 3 6 0 . 7 3 1 . 8 2 3 . 6 4 7 . 2 7 2 . 8 0 0 . 7 9 1 . 5 9 3 . 9 7 7 . 9 5 1 5 . 9 0 4 . 7 0 0 . 3 6 0 . 7 2 1 . 7 9 3 . 5 8 7 . 1 7 2 . 8 5 0 . 7 7 1 . 5 4 3 . 8 5 7 . 7 0 1 5 . 4 0 4 . 7 5 0 . 3 5 0 . 7 1 1 . 7 7 3 . 5 3 7 . 0 7 2 . 9 0 0 . 7 5 1 . 4 9 3 . 7 3 7 . 4 7 1 4 . 9 4 4 . 8 0 0 . 3 5 0 . 7 0 1 . 7 4 3 . 4 8 6 . 9 7 2 . 9 5 0 . 7 3 1 . 4 5 3 . 6 3 7 . 2 5 1 4 . 5 0 4 . 8 5 0 . 3 4 0 . 6 9 1 . 7 2 3 . 4 3 6 . 8 7 3 . 0 0 0 . 7 0 1 . 4 1 3 . 5 2 7 . 0 5 1 4 . 0 9 4 . 9 0 0 . 3 4 0 . 6 8 1 . 6 9 3 . 3 9 6 . 7 8 3 . 0 5 0 . 6 9 1 . 3 7 3 . 4 3 6 . 8 5 1 3 . 7 0 4 . 9 5 0 . 3 3 0 . 6 7 1 . 6 7 3 . 3 4 6 . 6 8 3 . 1 0 0 . 6 7 1 . 3 3 3 . 3 3 6 . 6 7 1 3 . 3 3 5 . 0 0 0 . 3 3 0 . 6 6 1 . 6 5 3 . 3 0 6 . 6 0 3 . 1 5 0 . 6 5 1 . 3 0 3 . 2 5 6 . 4 9 1 2 . 9 8 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 . otherwise, output voltage probably can not be pulled 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 7 750ma cmos positive voltage regulator
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