BW7383 6 pin non-isolation buck current control ic with high pfc for led lighting rev 1.1 jan. 2014 1 features universal input voltage range from 90vac to 264vac transition-mode pfc operating built-in active power factor correction technique constant output current control led driver good line and load regulation open-led protection on dmg and vcc pin over-voltage protection on vcc pin short-led protection cycle by cycle over current protection on cs pin over-temperature protection gate driving voltage clamping sot26 package available applications led lighting down light tube lamp par lamp bulb order information description BW7383 is a non-isolation buck type control ic with active power factor correction function for led lighting application. the ic achieves high power factor and high efficiency by bcm mode. the line and load regulation of led current is about 2.5% because of particular control method. BW7383 also provides gate driving voltage clamping, vcc over voltage protection and system output open/short circuit protection to increase ic performance. pin configurations (top view) bw 7383 - kf r circuit type bw shipping: r: tape & reel kf: sot-26 com gnd cs dmg out vcc 1 2 3 4 6 5 sot-26 http://
bw 7 3 8 3 6 pin n on- is olat i on buc k c ur r en t c o nt r o l i c w it h h igh pf c f or led light ing r e v 1 . 1 j a n . 2 0 1 4 2 p i n d e s c r i p t i o n s pin name pin description com output pin of error amplifier. gnd ground return for all internal circuit. cs input current sense pin. out gate driver output. vcc power supply pin for all internal circuit. dmg zero current demagnetization sensing. t y p i c a l a p p l i c a t i o n c i r c u i t s
bw 7 3 8 3 6 pin n on- is olat i on buc k c ur r en t c o nt r o l i c w it h h igh pf c f or led light ing r e v 1 . 1 j a n . 2 0 1 4 3 a b s o l u t e m a x i m u m r a t i n g s ( n o t e 1 ) p a r a m e t e r s y m b o l r a n g e unit p o w e r s u p p l y p i n v c c 4 0 v d m g v o l t a g e t o g n d v d m g - 0 . 3 t o 4 0 v o u t v o l t a g e t o g n d v ou t - 0 . 3 t o 4 0 v c s v o l t a g e t o g n d v c s - 0 . 3 t o 5 . 5 v c o m v o l t a g e t o g n d v c om - 0 . 3 t o 5 . 5 v j u n c t i o n t e m p e r a t u r e r a n g e t j - 4 0 t o + 1 5 0 c s t o r a g e t e m p e r a t u r e r a n g e t stg - 6 5 t o + 1 5 0 c l e a d t e m p e r a t u r e ( s o l d e r i n g 1 0 s e c ) t lead 2 6 0 c p o w e r d i s s i p a t i o n @ t a = 2 5 c p d 0 . 3 w t h e r m a l r e s i s t a n c e j u n c t i o n t o a m b i e n t ( n o t e 2 ) ja 2 2 0 c / w t h e r m a l r e s i s t a n c e j u n c t i o n t o c a s e jc 1 0 6 . 6 c/w e s d r a t i n g ( h u m a n b o d y m o d e ) ( n o t e 3 ) v e s d 2 k v r e c o m m e n d e d o p e r a t i n g c o n d i t i o n s ( n o t e 4 ) p a r a m e t e r s y m b o l o p e r a t i o n c o n d i t i o n s u n i t p o w e r s u p p l y p i n v c c 3 4 . 5 v d m g v o l t a g e t o g n d v d m g - 0 . 3 t o 1 1 . 2 v o u t v o l t a g e t o g n d v ou t - 0 . 3 t o 1 9 v c s v o l t a g e t o g n d v c s - 0 . 3 t o 5 v c o m v o l t a g e t o g n d v c om - 0 . 3 t o 5 v o p e r a t i n g j u n c t i o n t e m p e r a t u r e r a n g e t j - 4 0 t o + 1 2 5 c 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 r a n g e t op a - 4 0 t o + 8 5 c n o t e 1 : s t r e s s e s l i s t e d a s t h e a b o v e a b s o l u t e m a x i m u m r a t i n g s m a y c a u s e p e r m a n e n t d a m a g e t o t h e d e v i c e . t h e s e a r e f o r s t r e s s r a t i n g s . f u n c t i o n a l o p e r a t i o n o f t h e d e v i c e a t t h e s e o r a n y o t h e r c o n d i t i o n s b e y o n d t h o s e i n d i c a t e d i n t h e o p e r a t i o n a l s e c t i o n s o f t h e s p e c i f i c a t i o n s i s n o t i m p l i e d . e x p o s u r e t o a b s o l u t e m a x i m u m r a t i n g c o n d i t i o n s f o r e x t e n d e d p e r i o d s m a y r e m a i n p o s s i b i l i t y t o a f f e c t d e v i c e r e l i a b i l i t y . n o t e 2 : t h e r m a l r e s i s t a n c e i s s p e c i f i e d w i t h t h e c o m p o n e n t m o u n t e d o n a l o w e f f e c t i v e t h e r m a l c o n d u c t i v i t y t e s t b o a r d i n f r e e a i r a t t a = 2 5 c . n o t e 3 : d e v i c e s a r e e s d s e n s i t i v e . h a n d i n g p r e c a u t i o n r e c o m m e n d e d . n o t e 4 : t h e d e v i c e i s n o t g u a r a n t e e d t o f u n c t i o n o u t s i d e i t s o p e r a t i n g c o n d i t i o n s .
bw 7 3 8 3 6 pin n on- is olat i on buc k c ur r en t c o nt r o l i c w it h h igh pf c f or led light ing r e v 1 . 1 j a n . 2 0 1 4 4 b l o c k d i a g r a m
bw 7 3 8 3 6 pin n on- is olat i on buc k c ur r en t c o nt r o l i c w it h h igh pf c f or led light ing r e v 1 . 1 j a n . 2 0 1 4 5 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 c , u n l e s s o t h e r w i s e s p e c i f i e d . p a r a m e t e r s y 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 t u r n - o n v o l t a g e v c c _on 1 7 . 4 1 8 . 4 1 9 . 4 v t u r n - o f f v o l t a g e v c c _off 9 . 3 9 . 8 1 0 . 3 v q u i e s c e n t c u r r e n t 1 i q1 v c c = 1 7 v , a t v c c _ o f f - - 3 0 5 0 ua q u i e s c e n t c u r r e n t 2 i q2 s t a r t u p a t 4 . 5 k h z - - 6 0 0 8 0 0 ua o p e r a t i o n s u p p l y c u r r e n t i c c - - 2 . 5 3 . 0 m a protection v c c v o l t a g e p r o t e c t i o n v ovp a 3 1 . 2 3 2 . 8 3 4 . 5 v o u t p u t v o l t a g e p r o t e c t i o n v ovps 9 . 8 1 0 . 5 1 1 . 2 v c s l i m i t v o l t a g e v oc p 1 . 1 5 1 . 2 5 1 . 3 5 v s h o r t c i r c u i t p r o t e c t i o n ( n o t e 5 ) v o_str - - 2 - - v oscillator s t a r t u p t i m e r t str - - 2 2 0 - - u s gm amplifier r e f e r e n c e v o l t a g e v r ef 1 9 5 2 0 0 2 0 5 m v t r a n s c o n d u c t a n c e g m - - 1 0 8 - - u a / v s o u r c e c u r r e n t i c om p_sou - - 2 0 - - u a driver dropout voltage v oh v c c = 3 3 v , i o = 1 0 m a - - 1 . 2 1 . 5 v v ol v c c = 3 3 v , i o = - 1 0 m a - - 0 . 1 2 - - v r i s i n g t i m e t r ise v c c = 2 0 v , c o = 1 n f - - 4 0 - - ns f a l l i n g t i m e t f ail v c c = 2 0 v , c o = 1 n f - - 8 0 - - ns o u t p u t c l a m p v o l t a g e v o_c lam p - - - - 1 9 v l e a d i n g e d g e b l a n k i n g t i m e l e b t - - 0 . 5 - - n s otp (note 6) o t p t r i p p o i n t - - 1 5 0 - - o t p r e l e a s e p o i n t - - 1 1 5 - - o t p t h r e s h o l d h y s t e r e s i s - - 3 5 - - n o t e 5 : g u a r a n t e e d b y d e s i g n . n o t e 6 : a u t o r e c o v e r y t y p e .
bw 7 3 8 3 6 pin n on- is olat i on buc k c ur r en t c o nt r o l i c w it h h igh pf c f or led light ing r e v 1 . 1 j a n . 2 0 1 4 6 a p p l i c a t i o n i n f o r m a t i o n 1. f u n ct i o n d escr i p t i o n t h e bw 7 3 8 3 i s a c o n s t a n t c u r r e n t b u c k c o n t r o l l e r w i t h p f c f u n c t i o n f o r l e d l i g h t i n g a p p l i c a t i o n s . t h e c o n t r o l l e r i s b c m o p e r a t i o n w i t h c o n s t a n t o n t i m e b a s e d r e g u l a t o r d e s i g n t o a c h i e v e h i g h p o w e r f a c t o r p e r f o r m a n c e . t h e bw 7 3 8 3 i s b u i l t - i n f u n c t i o n s o f v c c o v e r v o l t a g e p r o t e c t i o n , o p e n l e d p r o t e c t i o n , s h o r t l e d p r o t e c t i o n , o v e r t e m p e r a t u r e p r o t e c t i o n , p r i m a r y s i d e c u r r e n t l i m i t , a n d g a t e c l a m p w i t h i n . t h e bw 7 3 8 3 s e n s e o u t p u t c u r r e n t f r o m c s p i n t o g e t t h e o u t p u t c u r r e n t i n f o r m a t i o n . b y t h e s y s t e m c l o s e l o o p f e e d b a c k . t h e a v a r g e o u t p u t c u r r e n t c a n e x p r e s s a s b e l o w . rs i o u t / 2 . 0 = 2. pi n d et a i l 2 - 1 . c o m t h i s i s t h e o u t p u t o f t h e g m a m p l i f i e r . c o n n e c t w i t h a s u i t a b l e r c n e t w o r k t o g r o u n d . 2 - 2 . g n d g n d i s t h e r e f e r e n c e n o d e o f i n t e r n a l c i r c u i t . 2 - 3 . c s m o s f e t c u r r e n t s i g n a l s e n s i n g f o r l e d c o n s t a n t c u r r e n t c o n t r o l a n d c u r r e n t l i m i t s e t t i n g f u n c t i o n s c s ( l i m i t ) r 1 . 2 5 i = 2 - 4 . o u t g a t e d r i v e f o r e x t e r n a l m o s f e t s w i t c h a n d i s b u i l t - i n g a t e c l a m p f u n c t i o n . 2 - 5 . v c c p o w e r s u p p l y f o r t h e c o n t r o l l e r d u r i n g n o r m a l o p e r a t i o n . t h e c o n t r o l l e r w i l l s t a r t u p w h e n v c c r e a c h e s 1 8 . 4 v ( t y p i c a l ) a n d w i l l s h u t - d o w n w h e n v c c v o l t a g e i s b e l o w 9 . 8 v ( t y p i c a l ) . a d e c o u p l i n g c a p a c i t o r s h o u l d b e c o n n e c t e d b e t w e e n t h e v c c a n d g n d p i n a s c l o s e a s p o s s i b l e . t h e bw 7 3 8 3 p e r f o r m v c c o v e r v o l t a g e p r o t e c t i o n t h o u g h v c c p i n . o n c e v c c p i n e x c e e d i n 3 2 . 8 v , bw 7 3 8 3 t u r n s o f f a n d l a t c h o u t t h e m o s f e t s w i t c h e r u n t i l v c c u n d e r v c c _off . 2 - 6 . d m g t h e d m g p i n c a n s e n s e o u t p u t i n f o r m a t i o n t o d e p a r t f r o m s t a r t u p v o l t a g e ( v o_str ) a n d p r o t e c t i o n v o l t a g e ( v ovp s ) . b e s i d e s , t h e i n t e r n a l r e s i s t a n c e o f d m g p i n i s 1 . 6 m o h m . w h e n d m g s e n s e v o l t a g e u n d e r v o_str , t h e c i r c u i t w i l l w o r k o n s h o r t c i r c u i t p r o t e c t i o n , a n d t h e s y s t e m s w i t c h i n g f r e q u e n c y f str = 1 / t s t r . w h e n d m g s e n s e v o l t a g e o v e r v ovps , t h e c i r c u i t w i l l w o r k o n o v e r v o l t a g e p r o t e c t i o n , i t w i l l l a t c h o u t o f f u n t i l v c c u n d e r v c c _off .
bw 7 3 8 3 6 pin n on- is olat i on buc k c ur r en t c o nt r o l i c w it h h igh pf c f or led light ing r e v 1 . 1 j a n . 2 0 1 4 7
bw 7 3 8 3 6 pin n on- is olat i on buc k c ur r en t c o nt r o l i c w it h h igh pf c f or led light ing r e v 1 . 1 j a n . 2 0 1 4 8 p a c k a g e o u t l i n e d i m e n s i o n s
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