e l ek tr on isch e b a u e lemen te d e s c r i p t i o n 01 -jun-2002 rev. a page 1 of 5 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 functional block diagram s j 214 8 1 . 5 a c m o s l o w d r o p o u t v o l t a g e r e g u l a t o r 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 s j21 4 8 the sj 21 4 8 is stable with an output capacitance of 4.7 m f or greater. the sj21 4 8 series of positive,linear regulators feature low quiescent current (45 m a typ.) with low dropout voltage, making them ideal for battery applications. these rugged devices have both thermal shutdown and current fold-back to prevent device failure under the "worst" of operating conditions. to-252 ref. min. max. ref. min. max. a 6.40 6.80 g 0.50 0.70 b 5.20 5.50 h 2.20 2.40 c 6.80 7.20 j 0.45 0.55 d 2.20 2.80 k 0 0.15 e 2.30 ref. l 0.90 1.50 f 0.70 0.90 m 5.40 5.80 s 0.60 0.90 r 0.80 1.20 millmeter millmeter
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 5 ( t ) + 1 t o a b s o l u t e m a x i m u m r a t i n g s pa r a m e te r sy m b o l r a ti n g s u n i t i n p u t m a x v o l t a g e v i n 8 v o u t p u t c u r r e n t i o u t p d / ( v i n - v o ) a o u t p u t v o l t a g e v o u t 1 . 5 ~ 5 . 0 v o p e r a t i n g a m b i e n t t e m p e r a t u r e t o p r - 4 0 ~ + 8 5 : ju n ct i o n t e m p e r a t u r e t j - 4 0 ~ + 1 2 5 m a x i m u m j u n c t i o n t e m p e r a t u r e t j m a x 1 5 0 c o n d u ct i ve 7 j c n o n - c o n d u ct i ve 3 0 : / w t h e r m a l r e si st a n ce j a 9 0 : / w p o w e r d i ss i p a t i o n ( ? t = 1 0 0 : ) p d 1 . 2 w e d s c l a ssi f i ca t i o n b 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 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 ) v i n = v o u t ( t ) + 2 v , 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 i n = v o u t ( t ) + 2 v , v o u t v
o u t ( e ) * 0 . 9 6 1 . 5 - - a c u rre n t l i m i t i l i m v i n = v o u t ( t ) + 2 v , v o > 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 v i n = v o u t ( t ) + 2 v , i o = 1 m a t o 1 . 5 a - 1 0 . 2 1 % 1 . 4 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 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 ~ 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 vi 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 i n = v o u t ( t ) + 1 v , v o u t < 0 . 4 v - 7 5 0 - m a f = 1 0 0 h z - 7 0 - 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 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 b y p = 0 f c o = 4 . 7 f - 3 0 - v r m s 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 sj214 8 1.5a cmos low dropout voltage regulator
01-jun-2002 rev. a page 3 of 5 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 ) + 1 t o s j 2 1 4 8 - 1 5 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 8 v 1 5 2 1 . 5 v 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 . ) s j 2 1 4 8 - 2 5 8 v 2 5 2 2 . 5 v x x x x s j 2 1 4 8 - 1 8 8 v 1 8 2 1 . 8 v x x x x s j 2 1 4 8 - 3 3 8 v 3 3 2 3 . 3 v x x x x s j 2 1 4 8 - 3 6 8 v 3 6 2 3 . 6 v x x x x s j 2 1 4 8 - 5 0 8 v 5 0 2 5 . 0 v x x x x s j 2 1 4 8 - 4 7 8 v 4 7 2 4 . 7 5 v x x x x c h a r a c t e r i s t i c s c u r v e SJ2148 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 5 of 5 http://www.secosgmbh.com/ any changing of specification will not be informed individual 1 1 5 : 8 5 : 5 5 : 2 5 : - 5 : - 4 5 : SJ2148 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 5 SJ2148 1.5a cmos low dropout voltage regulator
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