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d u a l c h a n n e l 5 0 0 m a / 5 0 0 m a r e g u l a t o r + r e s e t i c c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 1 a n p e c r e s e r v e s t h e r i g h t t o m a k e c h a n g e s t o i m p r o v e r e l i a b i l i t y o r m a n u f a c t u r a b i l i t y w i t h o u t n o t i c e , a n d a d v i s e c u s t o m e r s t o o b t a i n t h e l a t e s t v e r s i o n o f r e l e v a n t i n f o r m a t i o n t o v e r i f y b e f o r e p l a c i n g o r d e r s . a p l 5 5 5 1 l o w q u i e s c e n t c u r r e n t : 1 1 0 m a ( n o l o a d ) l o w d r o p o u t v o l t a g e : v d r o p 1 = 4 5 0 m v @ 5 0 0 m a v d r o p 2 = 5 0 0 m v @ 5 0 0 m a f i x e d o u t p u t v o l t a g e : v o u t 1 = 3 . 3 v / 5 0 0 m a v o u t 2 = 2 . 8 v / 5 0 0 m a s t a b l e w i t h 4 . 7 m f o u t p u t c a p a c i t o r s t a b l e w i t h a l u m i n u m , t a n t a l u m o r c e r a m i c c a p a c i t o r s b u i l t i n t h e r m a l p r o t e c t i o n f a s t t r a n s i e n t r e s p o n s e s h o r t s e t t i n g t i m e s o p - 8 , s o p - 8 - p w i t h t h e r m a l p a d p a c k a g e s a d j u s t m e n t - f r e e r e s e t d e t e c t i o n v o l t a g e : 3 . 9 v t y p e a s y t o s e t d e l a y t i m e f r o m v o l t a g e d e t e c t i o n t o r e s e t r e l e a s e lead free available (rohs compliant) f e a t u r e s g e n e r a l d e s c r i p t i o n t h e a p l 5 5 5 1 i s a d u a l - c h a n n e l r e g u l a t o r w i t h r e s e t f u n c t i o n ( s p e c i f i c v o l t a g e m o n i t o r i n g ) , a n d i n t e r n a l d e l a y c i r c u i t , s e t t o d e t e c t 3 . 9 v . m a x i m u m i n p u t v o l t - a g e i s 6 v , a n d b o t h o u t p u t 1 a n d o u t p u t 2 c a n d e l i v e r u p t o 4 5 0 m a . t h e t y p i c a l d r o p o u t v o l t a g e o f b o t h c h a n n e l i s 5 0 0 m v a t 5 0 0 m a l o a d i n g . d e s i g n w i t h a n i n t e r n a l p - c h a n n e l m o s f e t p a s s t r a n s i s t o r , t h e a p l 5 5 5 1 m a i n - t a i n s a l o w s u p p l y c u r r e n t . o t h e r f e a t u r e s i n c l u d e , t h e r - m a l - s h u t d o w n p r o t e c t i o n , c u r r e n t l i m i t p r o t e c t i o n t o e n s u r e s p e c i f i e d o u t p u t c u r r e n t . t h e a p l 5 5 5 1 c o m e s i n m i n i a t u r e s o p - 8 a n d s o p - 8 - p p a c k a g e s . a p p l i c a t i o n s o p t i c a l s t o r a g e s y s t e m p i n c o n f i g u r a t i o n 1 2 3 4 5 6 7 8 v in gnd v det v out1 v out2 cont cd reset = t h e r m a l p a d ( c o n n e c t e d t o g n d p l a n e f o r b e t t e r h e a t d i s s i p a t i o n ) s o p - 8 ( t o p v i e w ) s o p - 8 - p ( t o p v i e w ) 1 2 3 4 5 6 7 8 v in gnd v det v out1 v out2 cont cd reset
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 2 a p l 5 5 5 1 o r d e r i n g a n d m a r k i n g i n f o r m a t i o n package code k : sop-8 ka : sop-8-p temp. range i : -40 to 85 c handling code tr : tape & reel lead free code l : lead free device blank : original device APL5551 APL5551 xxxxx APL5551 k / ka: xxxxx - date code handling code lead free code temp. range package code detection voltage n o t e : a n p e c l e a d - f r e e p r o d u c t s c o n t a i n m o l d i n g c o m p o u n d s / d i e a t t a c h m a t e r i a l s a n d 1 0 0 % m a t t e t i n p l a t e t e r m i n a t i o n f i n i s h ; w h i c h a r e f u l l y c o m p l i a n t w i t h r o h s a n d c o m p a t i b l e w i t h b o t h s n p b a n d l e a d - f r e e s o l d i e r i n g o p e r a t i o n s . a n p e c l e a d - f r e e p r o d u c t s m e e t o r e x c e e d t h e l e a d - f r e e r e q u i r e m e n t s o f i p c / j e d e c j s t d - 0 2 0 c f o r m s l c l a s s i f i c a t i o n a t l e a d - f r e e p e a k r e f l o w t e m p e r a t u r e . p i n d e s c r i p t i o n pin no. name i/o description 1 v in i voltage supply input pin. 2 v out1 o regulator output pin. 3 cd o delay time capacitor pin, reset pin output delay time can be set by the capacitor connected to the cd pin. tplh = 130000 * c, tplh : transmission dela y time (s), c:capacitor value (f) 4 v det i input pin of voltage detection. 5 v out2 o regulator output pin. 6 reset o input voltage detection output pin , high = v det vs 7 gnd gnd pin 8 cont i v out1 on/off - control pin, v out1 will be tu rn off when cont pull to low. symbol parameter rating unit v in , v out input voltage or out voltage 6 .5 v cont v out1 shutdown control pin 6 .5 v v det reset pin supply voltage 6 .5 v r th,ja thermal resistance ? junction to ambient sop - 8 sop - 8 - p 1 50 8 0 c/w a b s o l u t e m a x i m u m r a t i n g s
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 3 a p l 5 5 5 1 symbol parameter rating unit r th,jc thermal resistance ? junction to case sop - 8 sop - 8 - p 30 5 c/w p d power dissipation at ta = 55 c (note) sop - 8 sop - 8 - p 0.7 1.4 w t j operating junction temperature control section 0 to 125 c power transistor 0 to 1 7 0 t stg storage temperature range - 65 to +150 c t l lead temperature (soldering, 10 second) 260 c a b s o l u t e m a x i m u m r a t i n g s ( c o n t . ) 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 l e s s o t h e r w i s e n o t e d t h e s e s p e c i f i c a t i o n s a p p l y o v e r f u l l t e m p e r a t u r e , v i n = 5 v , c i n = 1 m f , c o u t 1 = 4 . 7 m f , c o u t 2 = 4 . 7 m f , c o n t = v i n , t a = - 4 0 t o 8 5 c . t y p i c a l v a l u e s r e f e r t o t a = 2 5 c . apl55 51 symbol parameter test conditions min. typ. max. unit v in input voltage 6 v quiescent current i out1 = 0ma, i out2 = 0ma 100 200 m a i q shutdown supply current cont = low , i out2 = 0ma 70 140 m a i cont shutdown input bias current v cont = v in 0.1 m a high threshold voltage 1.6 v in +0.3 v cont low threshold voltage - 0.3 0.4 v i ccq v det input current v det = 5v 20 40 m a regulator1 v out1 output voltage v in = 5v 3 . 23 4 3.3 3.366 v i limit circuit current limit v in = 5v 8 00 ma i out load current 5 00 ma reg line line regulation v out +0.5v< v in <6.0v, i out = 10ma 4 6 mv reg load load regulation v in = 5v, 0ma < i out < i max 25 6 0 mv n o t e : w h e n m o u n t e d o n a ( c o p p e r f o i l a r e a 6 0 % , 6 0 x 4 5 x 1 . 6 t m m ) g l a s s e x o x y b o a r d .
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 4 a p l 5 5 5 1 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 ( c o n t . ) apl55 51 unit symbol parameter test conditions min. typ. max. v drop dropout voltage (note) (vout (nominal) = 3 . 3 v version) i out = 500ma 450 600 mv psrr ripple rejection f 1khz, 1vpp at i out = 50ma 45 55 db ots over temperature shutdown 155 17 0 c over temperature shutdown hysteresis hysteresis 15 c tc output voltage temperature coefficient t a = - 20 ~ 80 c 100 200 ppm/ c c out output capacitor 4.7 m f esr 0.01 1 w regulator2 v out2 output voltage v in = 5v 2.744 2.8 2.856 v i limit circuit current limit v in = 5v 8 00 ma i out load current 500 ma reg line line regulation v out +0.5v< v in <6.0v, i out = 10ma 4 6 mv reg load load regulation v in =5v, 0ma< i out < i ma x 25 60 mv v drop dropout voltage (note) (vout (nominal) = 2.8 v version) i out = 500ma 500 650 mv psrr ripple rejection f 1khz, 1vpp at i out = 50ma 45 5 5 db ots over temperature shutdown 1 70 c over temperature shutdown hysteresis hysteresis 1 5 c tc output voltage temperature coefficient t a = - 20 ~ 80 c 100 200 ppm/ c c out output capacitor 4.7 m f esr 0.01 1 w reset / reset vs detection voltage v det = h l 3.822 3.9 3.978 v ? vs/ ? t vs temperature coefficient t a = - 20~+80c 100 ppm/c ? vs hysteresis voltage v det = h l 130 180 230 mv u n l e s s o t h e r w i s e n o t e d t h e s e s p e c i f i c a t i o n s a p p l y o v e r f u l l t e m p e r a t u r e , v i n = 5 v , c i n = 1 m f , c o u t 1 = 4 . 7 m f , c o u t 2 = 4 . 7 m f , c o n t = v i n , t a = - 4 0 t o 8 5 c . t y p i c a l v a l u e s r e f e r t o t a = 2 5 c .
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 5 a p l 5 5 5 1 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 ( c o n t . ) apl55 51 symbol parameter test conditions min. typ. max. unit reset / reset v ol low - level output voltage v det = 3.9v, r l = 4.7k w 2 2 60 mv i oh output leakage current v det = 5v 0.5 1 a i ol1 output current1 v det = 3.9v, v reset = 0.4v 10 14 ma i o l2 output current2 v det = 3.9v, v reset = 0.4v t a = - 20 ~ +80 c 8 14 ma t plh ?h? transmission delay time cd = 0 f 42 90 s t plh1 reset delay time v det = 3.7v 5v, cd = 0.1 f 8 13 18 ms t phl ?l? transmission delay time cd = 0 f 4 90 s v opl threshold operating voltage v reset = 0.4v 0.95 1.25 v u n l e s s o t h e r w i s e n o t e d t h e s e s p e c i f i c a t i o n s a p p l y o v e r f u l l t e m p e r a t u r e , v i n = 5 v , c i n = 1 m f , c o u t 1 = 4 . 7 m f , c o u t 2 = 4 . 7 m f , c o n t = v i n , t a = - 4 0 t o 8 5 c . t y p i c a l v a l u e s r e f e r t o t a = 2 5 c . a p p l i c a t i o n c i r c u i t v out1 v in gnd reset APL5551 cd cont 4.7k w v det c out1 4.7 m f v out2 c out2 4.7 m f 0.1 m f 1 m f r l
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 6 a p l 5 5 5 1 t i m i n g c h a r t reset v in . v det cont v out1 v out2 5v vs 5v 0v h l 5v 0v 0v 5v vs t plh + t plh1
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 7 a p l 5 5 5 1 0 0.5 1 1.5 2 2.5 3 0 2 4 6 0 50 100 150 200 250 300 350 400 450 0 100 200 300 400 500 0 0.5 1 1.5 2 2.5 3 3.5 0 1 2 3 4 5 0 20 40 60 80 100 120 140 160 0 1 2 3 4 5 6 q u i e s c e n t c u r r e n t v s . i n p u t v o l t a g e quiescent current ( m a) t y p i c a l c h a r a c t e r i s t i c s q u i e s c e n t c u r r e n t v s . o u t p u t c u r r e n t quiescent current ( m a) o u t p u t c u r r e n t ( m a ) i n p u t v o l t a g e ( v ) o u t p u t v o l t a g e v s . i n p u t v o l t a g e output voltage (v) o u t p u t v o l t a g e v s . i n p u t v o l t a g e output voltage(v) i n p u t v o l t a g e ( v ) i n p u t v o l t a g e ( v ) i o u t 1 = i o u t 2 = 0 m a v i n = 4 v i o u t 2 = 0 m a v o u t 2 i o u t 1 = 0 m a v o u t 1
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 8 a p l 5 5 5 1 0 100 200 300 400 500 600 0 100 200 300 400 500 2.765 2.77 2.775 2.78 2.785 2.79 2.795 2.8 2.805 2.81 -40 -20 0 20 40 60 80 100 120 140 160 3.275 3.28 3.285 3.29 3.295 3.3 3.305 -30 -10 10 30 50 70 90 110 130 150 -80 +0 -70 -60 -50 -40 -30 -20 -10 10 100k 100 1k 10k t y p i c a l c h a r a c t e r i s t i c s d r o p o u t v o l t a g e v s . o u t p u t c u r r e n t dropout voltage (mv) o u t p u t c u r r e n t ( m a ) p s r r v s . f r e q u e n c y f r e q u e n c y ( h z ) psrr (db) v i n = 5 v i o u t 1 = i o u t 2 = 5 0 m a v o u t 1 v o u t 1 , v o u t 2 v o u t 2 o u t p u t v o l t a g e v s . t e m p e r a t u r e v out1 (v) a m b i e n t t e m p e r a t u r e ( c ) a m b i e n t t e m p e r a t u r e ( c ) o u t p u t v o l t a g e v s . t e m p e r a t u r e v out2 (v)
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 9 a p l 5 5 5 1 s h u t d o w n r e s p o n s e t i m e ( 1 m s / d i v ) l i n e - t r a n s i e n t r e s p o n s e t i m e ( 2 0 m s / d i v ) t y p i c a l c h a r a c t e r i s t i c s v o u t 1 ( 2 v / d i v ) v o u t 2 c o n t ( 2 v / d i v ) r l o a d = 1 0 0 w v i n = 4 . 5 ~ 5 . 5 v v o u t 1 ( 2 0 m v / d i v ) i o u t 1 = 1 0 m a c o u t 1 = 4 . 7 u f v o u t 2 ( 2 0 m v / d i v ) i o u t 2 = 1 0 m a c o u t 2 = 4 . 7 u f l o a d - t r a n s i e n t r e s p o n s e t i m e ( 0 . 1 m / d i v ) l o a d - t r a n s i e n t r e s p o n s e t i m e ( 0 . 1 m / d i v ) v o u t 1 ( 2 0 0 m v / d i v ) i l 1 = 1 m a ~ 5 0 0 m a c o u t 1 = 4 . 7 m f ( a l u m i n u m ) t r = 1 m s v o u t 2 ( 2 0 0 m v / d i v ) i l 2 = 1 m a ~ 5 0 0 m a c o u t 2 = 4 . 7 m f ( a l u m i n u m ) t r = 1 m s
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 1 0 a p l 5 5 5 1 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 25 50 75 100 125 150 175 t y p i c a l c h a r a c t e r i s t i c s p o w e r d i s s i p a t i o n v s . a m b i e n t t e m p e r a t u r e a m b i e n t t e m p e r a t u r e ( c ) power dissipation(w) s o p - 8 - p s o p - 8 p o w e r o n t i m e ( 5 m s / d i v ) p o w e r o f f t i m e ( 0 . 2 s / d i v ) v i n ( 2 v / d i v ) c d = 0 . 1 u f v o u t 1 ( 2 v / d i v ) r e s e t ( 5 v / d i v ) v o u t 2 ( 2 v / d i v ) v i n ( 2 v / d i v ) c d = 0 . 1 u f v o u t 1 ( 2 v / d i v ) r e s e t ( 5 v / d i v ) v o u t 2 ( 2 v / d i v )
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 1 1 a p l 5 5 5 1 a p p l i c a t i o n i n f o r m a t i o n capacitor selection and regulator stability t h e a p l 5 5 5 1 u s e s a t l e a s t a 1 m f c a p a c i t o r o n t h e i n p u t . t h i s c a p a c i t o r c a n u s e a l u m i n u m , t a n t a l u m o r c e r a m i c c a p a c i t o r s . i n p u t c a p a c i t o r w i t h l a r g e v a l u e a n d l o w e s r p r o v i d e s b e t t e r p s r r a n d l i n e - t r a n s i e n t r e s p o n s e . t h e o u t p u t c a p a c i t o r a l s o c a n u s e a l u m i n u m , t a n t a l u m o r c e r a m i c c a p a c i t o r s , a n d i t ? s m i n i m u m v a l u e s i s r e c o m m e n d e d 4 . 7 m f , e s r m u s e b e a b o v e 0 . 0 1 w . l a r g e o u t p u t c a p a c i t o r v a l u e s c a n r e d u c e n o i s e a n d i m p r o v e l o a d - t r a n s i e n t r e s p o n s e , s t a b i l i t y , a n d p s r r . n o t e t h a t s o m e c e r a m i c d i e l e c t r i c s e x h i b i t l a r g e c a p a c i t a n c e a n d e s r v a r i a t i o n w i t h t e m p e r a t u r e . i f u s e t h i s c a p a c i t o r , i t m a y b e n e c e s s a r y t o u s e 4 . 7 m f o r m o r e t o e n s u r e s t a b i l i t y a t t e m p e r a t u r e b e l o w - 1 0 c . load-transient considerations t h e a p l 5 5 5 1 l o a d - t r a n s i e n t r e s p o n s e g r a p h s i n t y p i c a l c h a r a c t e r i s t i c s s h o w t h e t r a n s i e n t r e s p o n s e . a s t e p c h a n g e i n t h e l o a d c u r r e n t f r o m 1 m a t o 5 0 0 m a a t 1 m s e c o n d w i l l c a u s e l e s s t h a n 2 0 0 m v t r a n s i e n t s p i k e . l a r g e o u t p u t c a p a c i t o r ? s v a l u e a n d l o w e s r c a n r e d u c e t r a n s i e n t s p i k e . shutdown/enable t h e a p l 5 5 5 1 h a s a n a c t i v e h i g h e n a b l e f u n c t i o n . f o r c e c o n t h i g h ( > 1 . 6 v ) e n a b l e s t h e v o u t 1 , c o n t l o w ( < 0 . 4 v ) d i s a b l e s t h e v o u t 1 a n d v o u t 2 c a n n o t b e a f f e c t e d b y c o n t . i n s h u t d o w n m o d e , t h e q u i e s c e n t c u r r e n t c a n r e d u c e t o 7 0 m a . t h e c o n t p i n c a n n o t b e f l o a t i n g , a f l o a t i n g c o n t p i n m a y c a u s e a n i n d e t e r m i n a t e s t a t e o n t h e o u t p u t . i f i t i s n o u s e , c o n n e c t t o v i n f o r n o r m a l o p e r a t i o n . reset t h e r e s e t p i n i s a s s e r t e d w h e n e v e r v d e t f a l l s b e l o w t h e r e s e t t h r e s h o l d v o l t a g e o r i f c o n t i s f o r c e d l o w a t s o m e s p e c i a l i c ( r e f e r t i m i n g c h a r t a n d p i n d e s c r i p t i o n ) . t h e r e s e t f u n c t i o n e n s u r e s t h e m i c r o p r o c e s s o r i s p r o p e r l y r e s e t a n d p o w e r s u p i n t o a k n o w n c o n d i t i o n a f t e r a p o w e r f a i l u r e . r e s e t w i l l r e m a i n v a l i d w i t h v i n a s l o w a s 0 . 9 5 v . t h e r e s e t o u t p u t i s a s i m p l e o p e n - d r a i n n c h a n n e l m o s e t s t r u c t u r e . a p u l l - u p r e s i s t o r m u s t b e u s e d t o p u l l t h i s o u t p u t u p t o s o m e v o l t a g e . f o r m o s t a p p l i c a t i o n , t h i s v o l t a g e w i l l b e t h e s a m e p o w e r s u p p l y t h a t s u p p l i e s v i n t o t h e a p l 5 5 5 1 . t h e a p l 5 5 5 1 i s r e l a t i v e l y i m m u n e t o n e g a t i v e - g o i n g g l i t c h e s b e l o w t h e r e s e t t h r e s h o l d . t y p i c a l l y r e s e t d e l a y t i m e i s 1 3 m s w h i l e u s i n g 0 . 1 m f a t c d p i n . i f m o r e t r a n s i e n t i m m u n i t y i s n e e d e d , a c d c a p a c i t o r c a n b e p l a c e d a s l a r g e r a s p o s s i b l e . input-output (dropout) voltage t h e m i n i m u n i n p u t - o u t p u t v o l t a g e d i f f e r e n t i a l ( d r o p o u t ) d e t e r m i n e s t h e l o w e s t u s a b l e s u p p l y v o l t a g e . t h e d r o p o u t v o l t a g e i s a f u n c t i o n o f d r a i n - t o - s o u r c e o n r e s i s t a n c e m u l t i p l i e d b y t h e l o a d c u r r e n t . current limit a p l 5 5 5 1 i n c l u d e s t w o s e p a r a t e c u r r e n t - l i m i t c i r c u i t r y f o r e a c h l i n e a r r e g u l a t o r . t h e c u r r e n t l i m i t p r o t e c t i o n , w h i c h s e n s e t h e c u r r e n t f l o w s t h e p - c h a n n e l m o s f e t , a n d c o n t r o l s t h e o u t p u t v o l t a g e . t h e p o i n t w h e r e l i m i t i n g o c c u r s i s i o u t = 8 0 0 m a . t h e o u t p u t c a n b e s h o r t e d t o g r o u n d f o r a n i n d e f i n i t e a m o u n t o f t i m e w i t h o u t d a m a g i n g t o t h e p a r t . thermal protection t h e r m a l p r o t e c t i o n l i m i t s t o t a l p o w e r d i s s i p a t i o n i n t h e a p l 5 5 5 1 . 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 t j = + 1 7 0 c , t h e t h e r m a l s e n s o r g e n e r a t e a l o g i c s i g n a l t o t u r n o f f t h e p a s s t r a n s i s t o r a n d l e t i c t o c o o l . w h e n t h e i c ? s j u n c t i o n t e m p e r a t u r e c o o l s b y 1 5 c , t h e t h e r m a l s e n s o r w i l l t u r n t h e p a s s t r a n s i s t o r o n a g a i n , r e s u l t i n g i n a p u l s e d o u t p u t d u r i n g c o n t i n u o u s t h e r m a l p r o t e c t i o n . t h e r m a l p r o t e c t i o n i s d e s i g n e d t o p r o t e c t t h e i c i n t h e e v e n t o f f a u l t c o n d i t i o n s . f o r c o n t i n u a l
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 1 2 a p l 5 5 5 1 a p p l i c a t i o n i n f o r m a t i o n thermal pad die top ground pad printed circuit board internal ground plane vias ambient air 118 mil 102 mil sop-8-p f i g u r e 1 thermal protection (cont.) o p e r a t i o n , d o n o t e x c e e d t h e j u n c t i o n t e m p e r a t u r e r a t i n g o f t j = + 1 5 0 c . operating region and power dissipation t h e t h e r m a l r e s i s t a n c e o f t h e c a s e a n d c i r c u i t b o a r d , a m b i e n t a n d j u n c t i o n a i r t e m p e r a t u r e , a n d t h e r a t e o f a i r f l o w a l l c o n t r o l t h e a p l 5 5 5 1 m a x i m u m p o w e r d i s s i p a t i o n . t h e p o w e r d i s s i p a t i o n a c r o s s t h e d e v i c e i s p = i o u t ( v i n - v o u t ) . 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 i s : p m a x = ( t j - t a ) / ( q j b + q b a ) w h e r e t j - t a i s t h e t e m p e r a t u r e d i f f e r e n c e b e t w e e n t h e j u n c t i o n a n d a m b i e n t a i r . q j b i s t h e t h e r m a l r e s i s t a n c e o f t h e p a c k a g e , q b a i s t h e t h e r m a l r e s i s t a n c e t h r o u g h t h e p r i n t e d c i r c u i t b o a r d , c o p p e r t r a c e s , a n d o t h e r m a t e r i a l s t o t h e s u r r o u n d i n g a i r . t h e g n d p i n p r o v i d e s a n e l e c t r i c a l c o n n e c t i o n t o g r o u n d a n d c h a n n e l i n g h e a t a w a y . c o n n e c t t h e g n d p i n t o g r o u n d u s i n g a l a r g e p a d o r g r o u n d p l a n e a s a heat sink, it can improve maximize thermal dissipation. for example: the sop8 package has maximum power dissipation 0.7w at t a = 55c and 1.4w at s o p - 8 - p (see power dissipation vs ambient temperature). v in = 5v, i out = 250ma, v out1 = 3.3v, v out2 = 2.8v, p d = [(5-3.3)v+(5-2.8)v] x 250ma = 0.975w the p d = 0.975w according the power dissipation issue, we should adapt the s o p - 8 - p package. it could reduce the thermal resistance to maintain the ic longer life. see figure 1. t h e s o p - 8 - p u t i l i z e s a b o t t o m t h e r m a l p a d t o m i n i m i z e t h e t h e r m a l r e s i s t a n c e o f t h e p a c k a g e , m a k i n g t h e p a c k a g e s u i t a b l e f o r h i g h c u r r e n t a p p l i c a t i o n s . t h e t h e r m a l p a d i s s o l d e r e d t o t h e t o p g r o u n d p a d a n d i s c o n n e c t e d t o t h e i n t e r n a l o r b o t t o m g r o u n d p l a n e b y s e v e r a l v i a s . t h e p r i n t e d c i r c u i t b o a r d ( p c b ) f o r m s a h e a t s i n k a n d d i s s i p a t e s m o s t o f t h e h e a t i n t o a m b i e n t a i r . t h e v i a s a r e r e c o m m e n d e d t o h a v e p r o p e r s i z e t o r e t a i n s o l d e r , h e l p i n g h e a t c o n d u c t i o n .
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 1 3 a p l 5 5 5 1 p a c k a g i n g i n f o r m a t i o n s o p - 8 p i n ( r e f e r e n c e j e d e c r e g i s t r a t i o n m s - 0 1 2 ) millimeters inches dim min. max. min. max. a 1.35 1.75 0.053 0.069 a1 0.10 0.25 0.004 0.010 d 4.80 5.00 0.189 0.197 e 3.80 4.00 0.150 0.157 h 5.80 6.20 0.228 0.244 l 0.40 1.27 0.016 0.050 e1 0.33 0.51 0.013 0.020 e2 1.27bsc 0.50bsc f 1 0 8 0 8 h e e1 e2 0.015x45 d a a1 0.004max. 1 l
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 1 4 a p l 5 5 5 1 p a c k a g i n g i n f o r m a t i o n millimeters inches dim min. max. min. max. a 1.35 1.75 0.053 0.069 a1 0 0. 1 5 0 0.0 06 d 4.80 5.00 0.189 0.197 d1 3.00 ref 0.118ref e 3.80 4.00 0.150 0.157 e1 2.60 ref 0.102ref h 5.80 6.20 0.228 0.244 l 0.40 1.27 0.016 0.050 e1 0.33 0.51 0.013 0.020 e2 1.27bsc 0.50bsc f 1 8 8 s o p - 8 - p p i n ( r e f e r e n c e j e d e c r e g i s t r a t i o n m s - 0 1 2 ) h e e1 e2 0.015x45 d a a1 0.004max. 1 l e1 d1
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 1 5 a p l 5 5 5 1 terminal material solder - plated copper (solder material : 90/10 or 63/37 snpb) , 100%sn lead solderability meets eia specification rsi86 - 91, ansi/j - std - 002 category 3. t 25 c to peak tp ramp-up t l ramp-down ts preheat tsmax tsmin t l t p 25 temperature time critical zone t l to t p p h y s i c a l s p e c i f i c a t i o n s r e f l o w c o n d i t i o n ( i r / c o n v e c t i o n o r v p r r e f l o w ) c l a s s i f i c a t i o n r e f l o w p r o f i l e s profile feature sn - pb eutectic assembly pb - free assembly average ramp - up rate (t l to t p ) 3 c/second max. 3 c/second max. preheat - temperature min (tsmin) - temperature max (tsmax) - time (min to max) (ts) 100 c 150 c 60 - 120 seconds 150 c 200 c 60 - 180 seconds time maintained above: - temperature (t l ) - time (t l ) 183 c 60 - 150 seconds 217 c 60 - 150 seconds peak /classificatioon temperature (tp) see table 1 see table 2 time within 5 c of actual peak temperature (tp) 10 - 30 seconds 20 - 40 seconds ramp - down rate 6 c/se cond max. 6 c/second max. time 25 c to peak temperature 6 minutes max. 8 minutes max. notes: all temperatures refer to topside of the package .measured on the body surface.
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 1 6 a p l 5 5 5 1 table 1. snpb entectic process ? package peak reflow temperature s package thickness volume mm 3 <350 volume mm 3 3 350 <2.5 mm 240 +0/ - 5 c 225 +0/ - 5 c 3 2.5 mm 225 +0/ - 5 c 225 +0/ - 5 c test item method description solderability mil - std - 883d - 2003 245 c, 5 sec holt mil - std - 883d - 1005.7 1000 hrs bias @125 c pct jesd - 22 - b,a102 168 hrs, 100 % rh, 121 c tst mil - std - 883d - 1011.9 - 65 c~150 c, 200 cycles esd mil - std - 883d - 3015.7 vhbm > 2kv, vmm > 200v latch - up jesd 78 10ms, 1 tr > 100ma table 2. pb - free process ? package classification reflow temperatures package thickness volume mm 3 <350 volume mm 3 350 - 2000 volume mm 3 >2000 <1.6 mm 260 +0 c* 260 +0 c* 260 +0 c* 1.6 mm ? 2.5 mm 260 +0 c* 250 +0 c* 245 +0 c* 3 2.5 mm 250 +0 c* 245 +0 c* 245 +0 c* *tolerance: the device manufacturer/supplier shall assure process compatibility up to and including the stated classification temperature (this means peak reflow temperature +0 c. for example 260 c+0 c) at the rated msl level. c a r r i e r t a p e t ao e w po p ko bo d1 d f p1 r e l i a b i l i t y t e s t p r o g r a m c l a s s i f i c a t i o n r e f l o w p r o f i l e s ( c o n t . )
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 5 w w w . a n p e c . c o m . t w 1 7 a p l 5 5 5 1 application carrier width cover tape width devices per reel sop - 8/ - p 12 9.3 2500 c o v e r t a p e d i m e n s i o n s c u s t o m e r s e r v i c e application a b c j t1 t2 w p e 330 1 62 +1.5 12.75+ 0.15 2 0.5 12.4 0.2 2 0.2 12 0. 3 8 0.1 1.75 0.1 f d d1 po p1 ao bo ko t sop - 8/ - p 5.5 1 1.55 +0.1 1.55+ 0.25 4.0 0.1 2.0 0.1 6.4 0.1 5.2 0. 1 2.1 0.1 0.3 0.013 a j b t2 t1 c c a r r i e r t a p e ( c o n t . ) a n p e c e l e c t r o n i c s c o r p . head office : no.6, dusing 1st road, sbip, hsin-chu, taiwan, r.o.c. tel : 886-3-5642000 fax : 886-3-5642050 t a i p e i b r a n c h : 7 f , n o . 1 3 7 , l a n e 2 3 5 , p a c c h i a o r d . , h s i n t i e n c i t y , t a i p e i h s i e n , t a i w a n , r . o . c . t e l : 8 8 6 - 2 - 8 9 1 9 1 3 6 8 f a x : 8 8 6 - 2 - 8 9 1 9 1 3 6 9 ( m m )

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