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| 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 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 . s t e p - u p c o n v e r t e r a n d l d o c o m b o 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 a p p l i c a t i o n s d u a l m o d e p o w e r s y s t e m u s b p e r i p h e r a l c a m c o r d e r s a n d d i g i t a l c a m e r a h a n d - h e l d i n s t r u m e n t p d a s t h e a p w 7 0 7 5 i s a p w m / p f m , h i g h - e f f i c i e n c y a n d s t e p - u p d c - d c c o n v e r t e r w i t h a n i n t e g r a t e d l d o i n p u t s w i t c h f o r d u a l m o d e a p p l i c a t i o n . d u r i n g b a t t e r y m o d e o p e r a t i o n , t h e a p w 7 0 7 5 a c t s a s s y n c h r o n o u s r e c t i - f i e r a n d s t e p - u p d c - d c c o n v e r t e r w i t h a f i x e d o r a d - j u s t a b l e o u t p u t v o l t a g e . w h e n t h e v i n p i n s e n s e 5 v i n p u t v o l t a g e , t h e a p w 7 0 7 5 i s s w i t c h e d t o l d o o p - e r a t i o n m o d e , m a i n t a i n i n g t h e c o n s t a n t o u t p u t v o l t a g e . t h e i n p u t v o l t a g e r a n g e s f r o m 0 . 6 v t o 4 . 5 v f o r s t e p - u p d c - d c c o n v e r t e r . t h e s t a r t - u p i s g u a r a n t e e d a t 1 v a n d t h e d e v i c e i s o p e r a t i n g d o w n t o 0 . 6 v . w h e n t h e d e v i c e i s a t l d o o p e r a t i n g m o d e , t h e s u i t a b l e o u t p u t v o l t a g e 3 . 3 v a n d l o a d i n g c u r r e n t 5 0 0 m a f o r m a x i m u m p o w e r c o n s u m p t i o n a r e g u a r a n t e e d . t h e a p w 7 0 7 5 i s s u i t e d f o r d u a l m o d e a n d p o r t a b l e b a t t e r y p o w e r e d a p p l i a n c e w i t h l o w - b a t t e r y d e t e c t o r . i n d u a l - m o d e a p p l i c a t i o n s , t h e a p w 7 0 7 5 d r a w s p o w e r f r o m a n y a v a i l a b l e 5 v u s b c o n n e c t i o n a n d r e v e r t s t o b a t t e r y p o w e r w h e n t h e u s b p o w e r i s r e m o v e d . b u i l t - i n a 5 0 0 m a l d o a n d s y n c h r o n o u s s t e p - u p d c - d c c o n v e r t e r b u i l t - i n p w m / p f m o p e r a t i n g m o d e p r o v i d e d d u a l i n p u t p o w e r s o u r c e s c o n n e c t f b t o o u t f o r 3 . 3 v o u t p u t v o l t a g e o r g n d f o r 2 . 5 v o u t p u t v o l t a g e o r a n e x t e r n a l r e s i s t o r d i v i d e r f o r a d j u s t a b l e o u t p u t v o l t a g e . f i x e d 3 0 0 k h z o p e r a t i n g f r e q u e n c y h i g h e f f i c i e n c y u p t o 9 4 % a t 2 0 0 m a o u t p u t c u r r e n t 0 . 6 v t o 4 . 5 v o p e r a t i n g v o l t a g e 1 v s t a r t u p i n p u t v o l t a g e l o w b a t t e r y v o l t a g e d e t e c t i o n r e v e r s e v o l t a g e p r o t e c t i o n i n t e r n a l s y n c h r o n o u s r e c t i f i e r a u t o m a t i c d e t e c t i o n i n p u t v o l t a g e c o m p a c t s o p - 8 - p a n d t s s o p - 8 p a c k a g e s lead free available (rohs compliant) p i n d e s c r i p t i o n vin shdn fb lbi lbo gnd lx out 1 2 3 4 5 6 7 8 vin shdn fb lbi lbo gnd lx out 1 2 3 4 5 6 7 8 = 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 ) t s s o p - 8 t o p v i e w s o p - 8 - p t o p v i e w
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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 2 apw7075 package code ka : sop-8-p o : tssop-8 temp. range c : 0 to 70 c handling code tu : tube tr : tape & reel lead free code l : lead free device blank : original device handling code temp. range package code apw7075 ka : apw7075 xxxxx xxxxx - date code apw7075 xxxxx apw7075 o : xxxxx - date code lead free code 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 b l o c k d i a g r a m drive current limit p-mos n-mos pwm/ pfm controller vref phase compensation soft-start voltage reference oscillator vref lx vref out vin lbo lbi fb gnd p-mos shdn vdd vdd vdd vdd n-mos q1 q2 q3 q4 vdd a b c y a b c y fb v out gnd r1,r2 2 shdn 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 . 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 3 symbol parameter value unit r q ja thermal resistance - junction to ambient sop - 8 sop - 8 - p tssop - 8 124 80 160 c/w 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 b a t = 2 v , f b = o u t ( v o u t = 3 . 3 v ) , r l = , t a = 0 c t o + 8 5 c , u n l e s s o t h e r w i s e n o t e d . t y p i c a l v a l u e s a r e a t t a = + 2 5 c . apw7075 symbol parameter test conditions min. typ. max. unit step - up section v bat minimum operating input voltage (note1) 0.6 v operating voltage 0.6 4.5 v start - up voltage r l = 3k w 0.9 1 v f sw operating frequency v out = 3.3vx96% 30 0 k hz d max maximum pwm duty cycle v out = 3.3vx96% 9 0 % power mosfet r ds(on) - n active switch on resistance i lx = 100ma 0.3 0.6 w r ds(on) - p synchronous switch on resistance i lx = 100ma 0.6 0.9 w control fb = out, i load = 0ma 3.234 3.3 3.366 v output voltage fb = gnd, i load = 0ma 2.45 2.5 2.55 v v out output voltage range external divider 2.5 5.5 v v out(drop) v out dropping voltage (note 2) v out = 3.3v, c out = 100 m f 1 50 mv t h e r m a l c h a r a c t e r i s t i c s a b s o l u t e m a x i m u m r a t i n g s symbol parameter value unit v out supply voltage(out to gnd) - 0.3 to 6.0 v v io input / output pins - 0.3 to 6.0 v t a operating ambient temperature range 0 to 85 c t j junction temperature range 0 to 150 c t stg storage temperature range - 65 to +150 c t s soldering temperature 300, 10 seconds 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 4 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 , 3 . 9 v v i n < 5 . 5 v , c o u t 3 1 0 m f , s h d n = v i n , t y p i c a l v a l u e s a r e a t t a = + 2 5 c . ) apw7075 symbol parameter test conditions min. typ. max. unit t ss soft - start time v out = 3.3v 3 0 100 ms v ref fb input threshold i load = 0ma 1.176 1.2 1.224 v i fb fb input current v fb = 1.4v 0.03 50 na i dd operating current (note3) v out = 3.3vx96 %, i load = 0ma 70 1 40 m a shutdown current v shdn = 0 0.1 5 m a i shdn shdn input current v shdn = 0 or v out 0.07 50 na logic low (v il ) 0.8 0.3 v shdn logic high(v ih ) 1.4 0.8 v lbi input hysteresis 10 mv v lbi lbi threshold 0.588 0.6 0.612 v i lbi lbi input current v lbi = 0.8v 1 50 na v lbo lbo logic low v lbi = 0, i sink = 1ma 0.2 0.4 v i lbo lbo off leakage current v lbo = 5.5v, v lbi = 5.5v 0.07 1 m a ldo section (note 4 ) v in(upper) upper v in threshold voltage v in increasing 3.75 3.9 4.05 v v in(lower) lower v in threshold voltage v in decreasing 3.65 3.8 3.95 v v th vin threshold hysteresis 100 mv v out output voltage v out - 2 v out v out +2 v i lim current limit v in = 5v 1 a i short short current v out = 0v 1 1 0 ma i out load current 500 ma v drop dropout voltage i load = 500ma 0. 6 0.9 v no load 800 100 0 ua iq quiescent current i load = 500ma 1.1 1.5 m a reg line line regulation 4v 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 6 a p p l i c a t i o n s c h e m a t i c ( c o n t . ) c o n n e c t t h e r 6 = 5 0 0 [ t o 1 k [ t o g n d f i g u r e 2 . d u a l m o d e l : 2 . 5 v o u t p u t v o l t a g e c o n n e c t t h e r 6 = 5 0 0 [ t o 1 k [ t o g n d f i g u r e 3 . d u a l m o d e l : a d j u s t a b l e o u t p u t v o l t a g e apw7075 1 vin shdn lbi lbo out lx gnd fb 2 3 4 8 7 6 5 vbat c2 100uf c1 10uf l1 22uh on off c3 10uf c4 1uf vout r3 r4 100k [ 2.5v low battery output adapter 5v 1n5817 r6 r5 3.6v 3.8v apw7075 1 vin shdn lbi lbo out lx gnd fb 2 3 4 8 7 6 5 vbat c2 100uf c1 10uf l1 22uh on off c3 10uf c4 1uf vout r1 r2 r4 300k [ 150k [ 100k [ low battery output vout ?? 2.5v ?? adapter 5v 1n5817 r5 r6 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 7 a p p l i c a t i o n s c h e m a t i c ( c o n t . ) f i g u r e 4 . s i n g l e b o o s t c o n v e r t e r 0.6v 5v apw7075 1 vin shdn lbi lbo out lx gnd fb 2 3 4 8 7 6 5 vbat c2 100uf c1 10uf l1 22uh on off c4 1uf vout r1 r2 r3 r4 300k [ 150k [ 100k [ 3.6v low battery output vout ?? 2.5v ?? ?? 4.5v ?? vbat t y p i c a l c h a r a c t e r i s t i c s t i m e ( 1 0 m s / d i v ) v b a t ( 1 v / d i v ) v o u t ( 1 v / d i v ) l x ( 2 v / d i v ) i o u t = 1 0 0 m a t i m e ( 1 0 m s / d i v ) v b a t ( 1 v / d i v ) v o u t ( 1 v / d i v ) l x ( 2 v / d i v ) i o u t = 1 0 0 m a p o w e r u p ( v b a t t e r y = 2 . 4 v ) p o w e r u p ( v b a t t e r y = 1 . 2 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 8 t i m e ( 5 m s / d i v ) v b a t ( 2 v / d i v ) v o u t ( 1 v / d i v ) l x ( 2 v / d i v ) i o u t = 1 0 0 m a t i m e ( 1 0 m s / d i v ) s h d n ( 1 v / d i v ) v o u t ( 1 v / d i v ) l x ( 2 v / d i v ) i o u t = 1 0 0 m a p o w e r d o w n e n a b l e t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) s h d n ( 1 v / d i v ) v o u t ( 1 v / d i v ) l x ( 2 v / d i v ) i o u t = 1 0 0 m a t i m e ( 1 m s / d i v ) t i m e ( 1 u s / d i v ) i l ( 2 0 0 m a / d i v ) l x ( 2 v / d i v ) l o u t ( 1 0 0 m v / d i v ) i o u t = 1 0 0 m a , v o u t = 3 . 3 v v b a t = 2 . 4 v , c b a t = 1 0 m f c o u t = 1 0 0 m f , l = 2 2 m h s h u t d o w n h e a v y l o a d o p e r a t i n g w a v e f o r 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 9 t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) t i m e ( 5 u s / d i v ) i l ( 2 0 0 m a / d i v ) l x ( 2 v / d i v ) l o u t ( 1 0 0 m v / d i v ) i o u t = 3 0 m a , v o u t = 3 . 3 v v b a t = 2 . 4 v , c b a t = 1 0 m f c o u t = 1 0 0 m f , l = 2 2 m h l i g h t l o a d o p e r a t i n g w a v e f o r m s 0 0.2 0.4 0.6 0.8 1 1.2 1.4 0.1 1 10 100 o u t p u t c u r r e n t ( m a ) start-up voltage(v) o u t p u t c u r r e n t v s . s t a r t - u p v o l t a g e 0 10 20 30 40 50 60 70 80 90 100 0.01 0.1 1 10 100 1000 0 10 20 30 40 50 60 70 80 90 100 0.01 0.1 1 10 100 1000 v o u t = 2 . 5 v , l = 2 2 m h v i n = 1 . 2 v v i n = 2 . 4 v v i n = 1 . 2 v v o u t = 3 . 3 v , l = 2 2 m h o u t p u t c u r r e n t ( m a ) effciency(%) o u t p u t c u r r e n t ( m a ) effciency(%) e f f c i e n c y v s . o u t p u t c u r r e n t e f f c i e n c y v s . o u t p u t c u r r e 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 1 0 0 10 20 30 40 50 60 70 80 90 100 0.01 0.1 1 10 100 1000 t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) v i n = 2 . 4 v v o u t = 3 . 3 v , l = 1 0 m h v i n = 1 . 2 v o u t p u t c u r r e n t ( m a ) efficiency(%) e f f i c i e n c y v s . o u t p u t c u r r e n t 0 10 20 30 40 50 60 70 80 90 100 0.01 0.1 1 10 100 1000 o u t p u t c u r r e n t ( m a ) efficiency(%) e f f i c i e n c y v s . o u t p u t c u r r e n t v o u t = 2 . 5 v , l = 1 0 m h v i n = 1 . 2 v 0 250 500 750 1000 1 1.5 2 2.5 3 3.5 4 0 0.1 0.2 0.3 0.4 0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 o u t p u t v o l t a g e ( v ) operating current into out(ma) o p e r a t i n g c u r r e t n t i n t o o u t v s . o u t p u t v o l t a g e f b = 1 . 4 v i n p u t v o l t a g e ( v ) maximum output current (ma) m a x i m u m o u t p u t c u r r e n t v s . i n p u t v o l t a g e v o u t = 3 . 6 v v o u t = 3 . 3 v v o u t = 2 . 5 v v o u t = 5 v l = 2 2 m h 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 1 1 0 100 200 300 400 500 1 1.5 2 2.5 3 3.5 4 t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) 0 100 200 300 400 500 1 1.5 2 2.5 3 3.5 4 l = 1 0 m h v o u t = 3 . 3 v v o u t = 2 . 5 v v o u t = 3 . 6 v v o u t = 5 v the transition from pfm to pwm(ma) i n p u t v o l t a g e ( v ) t r a n s i t i o n f r o m p f m t o p w m v s . i n p u t v o l t a g e the transition from pfm to pwm(ma) i n p u t v o l t a g e ( v ) v o u t = 3 . 3 v v o u t = 2 . 5 v v o u t = 3 . 6 v v o u t = 5 v l = 2 2 m h t r a n s i t i o n f r o m p f m t o p w m v s . i n p u t v o l t a g e 0 50 100 150 200 250 300 0 0.5 1 1.5 2 2.5 3 input battery current( m a) i n p u t b a t t e r y v o l t a g e ( v ) i n p u t b a t t e r y c u r r e n t v s . i n p u t b a t t e r y v o l t a g e v o u t = 3 . 3 v v o u t = 2 . 4 v t i m e ( 2 m s / d i v ) v b a t ( 2 v / d i v ) v o u t ( 2 0 0 m v / d i v ) i o u t = 1 0 0 m a , v o u t = 3 . 3 v v b a t = 2 v ~ 3 v l i n e t r a n s i e n t r e s p o n s e 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 1 2 t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) t i m e ( 0 . 5 m s / d i v ) v o u t ( 2 0 0 m v / d i v ) i o u t = 1 0 ~ 3 0 0 m a v b a t = 2 . 4 v , v o u t = 3 . 3 v l = 2 2 m h t i m e ( 5 0 u s / d i v ) i o u t = 1 0 0 m a , v o u t = 3 . 3 v c i n = 1 0 m f , v b a t = 2 . 4 v v i n ( 2 v / d i v ) v o u t ( 1 0 0 m v / d i v ) l x ( 2 v / d i v ) l o a d t r a n s i e n t r e s p o n s e p w m t o l d o v i n ( 2 v / d i v ) v o u t ( 1 0 0 m v / d i v ) l x ( 2 v / d i v ) i o u t = 1 0 0 m a , v o u t = 3 . 3 v c i n = 1 0 m f , v b a t = 2 . 4 v t i m e ( 0 . 2 m s / d i v ) v i n ( 2 v / d i v ) v o u t ( 2 v / d i v ) i i n ( 1 a / d i v ) i o u t = 1 0 0 m a t i m e ( 1 0 m s / d i v ) l d o t o p w m l d o p o w e r u p 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 1 3 t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) v i n ( 2 0 v / d i v ) v o u t ( 2 v / d i v ) i n ( 1 a / d i v ) i o u t = 1 0 0 m a t i m e ( 1 0 m s / d i v ) v i n = 5 v , v o u t = 3 . v o u t ( 5 0 m v / d i v ) i o u t = 1 0 m a ~ 5 0 0 m a t i m e ( 5 u s / d i v ) l d o p o w e r d o w n l d o 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 ( 5 u s / d i v ) v o u t ( 5 0 m v / d i v ) v i n = 5 v , v o u t = 3 . i o u t = 1 0 m a ~ 5 0 0 m a l b i ( 0 . 5 v / d i v ) l b o ( 2 v / d i v ) v b a t = 2 . 4 v , v o u t = 3 . 3 v t i m e ( 5 u s / d i v ) l d o l o a d t r a n s i e n t r e s p o n s e l b o r i s i n g d e l a y t i m e 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 1 4 t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) l b i ( 0 . 5 v / d i v ) l b o ( 2 v / d i v ) v b a t = 2 . 4 v , v o u t = 3 . 3 v t i m e ( 5 u s / d i v ) 0 5 10 15 20 25 30 0 0.25 0.5 0.75 1 1.25 1.5 v o u t = 3 . 3 v l b o o u t p u t l o w v o l t a g e ( v ) lbo sink current(ma) l b o o u t p u t s i n k c u r r e n t v s . l b o l o w v o l t a g e l b o f a l l i n g d e l a y t i m e 0 0.2 0.4 0.6 0.8 1 1.2 4 4.5 5 5.5 6 l d o i n p u t v o l t a g e ( v ) ldo current limit(a) l d o c u r r e n t l i m i t v s . l d o i n p u t v o l t a g e 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 4 4.5 5 5.5 6 ldo quiescent current (a) l d o i n p u t v o l t a g e ( v ) i o u t = 1 0 m a i o u t = 0 m a l d o q u i e s c e n t c u r r e n t v s . l d o i n p u t v o l t a g e 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 1 5 0 100 200 300 400 500 600 700 0 100 200 300 400 500 0 0.2 0.4 0.6 0.8 1 1.2 0 100 200 300 400 500 t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) quiescent current (ma) l d o o u t p u t c u r r e n t ( m a ) v i n = 5 v q u i e s c e n t c u r r e n t v s . l d o o u t p u t c u r r e n t l d o o u t p u t c u r r e n t ( m a ) dropout voltage (mv) d r o p o u t v o l t a g e v s . l d o o u t p u t c u r r e n t v o u t = 4 . 2 v 3.27 3.275 3.28 3.285 3.29 3.295 3.3 -40 -20 0 20 40 60 80 100 120 140 output voltage (v) t e m p e r a t u r e ( j ) 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 3.297 3.298 3.299 3.3 3.301 3.302 3.303 4 4.5 5 5.5 6 iout=0ma l d o i n p u t v o l t a g e ( v ) output voltage (v) o u t p u t v o l t a g e v s . l d o i n p u t v o l t a g e i o u t = 0 m a 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 1 6 t h e a p w 7 0 7 5 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 s h d n h i g h ( > 1 . 4 v ) t o e n a b l e t h e s t e p - u p c o n v e r t e r , s h d n l o w ( < 0 . 3 v ) t o d i s a b l e t h e s t e p - u p c o n v e r t e r a n d t h e d e v i c e e n t e r s s h u t d o w n m o d e . i n s h u t d o w n m o d e , t h e c o n v e r t e r s t o p s s w i t c h i n g a n d a l l i n t e r n a l c o n t r o l c i r c u i t s a r e t u r n e d o f f , b u t t h e o u t p u t i s s t i l l a p p l i e d b y i n p u t v o l t a g e t h r o u g h t h e b o d y d i o d e o f p - c h a n n e l m o s f e t , i t i s a b o u t v i n - 0 . 6 v . n o t e t h a t w h e n t h e o u t p u t i s a p p l i e d f r o m t h e v i n ( l d o m o d e ) , t h e s h u t d o w n f u n c t i o n i s d i s a b l e d . f u n c t i o n d e s c r i p t i o n p f m c o n t r o l s c h e m e t h e a p w 7 0 7 5 f e a t u r e s t h e p f m c o n t r o l s c h e m e t o i m p r o v e t h e e f f i c i e n c y d u r i n g l i g h t l o a d . i n p f m m o d e , t h e i n d u c t o r s t o r e s t h e e n e r g y d u r i n g i n t e r n a l n - c h a n - n e l m o s f e t t u r n s o n , a n d t h e e n e r g y i s t r a n s f e r r e d t o o u t p u t c a p a c i t o r s a n d l o a d d u r i n g i n t e r n a l p - c h a n - n e l m o s f e t t u r n s o n . i f t h e e n e r g y w h i c h i s c h a r g e d t o o u t p u t c a p a c i t o r s e x c e e d s t h e r e q u i r e m e n t o f l o a d , t h e c u r r e n t w i l l r e v e r s e f r o m o u t p u t c a p a c i t o r s t o i n - d u c t o r a n d i n p u t c a p a c i t o r s . t h e p f m c o m p a r a t o r c o m - p a r e s t h e s o u r c e ( o u t ) a n d d r a i n ( l x ) o f t h e i n t e r n a l p - c h a n n e l m o s f e t . w h e n t h e c u r r e n t t h a t f l o w s t h r o u g h t h e i n t e r n a l p - c h a n n e l m o s f e t i s b a c k w a r d ( f r o m o u t t o l x ) , t h e i n t e r n a l p - c h a n n e l m o s f e t w i l l b e t u r n e d o f f , a n d t h e o u t p u t c a p a c i t o r s u p p l i e s t h e l o a d a n d m a i n t a i n s t h e o u t p u t v o l t a g e . d u r i n g p f m m o d e , t h e i c s w i t c h e s o n l y a s n e e d t o s e r v e t h e l o a d , r e d u c i n g t h e s w i t c h i n g f r e q u e n c y a n d a s s o c i a t e d l o s s e s i n t h e i n t e r n a l s w i t c h e s a n d t h e e x t e r n a l i n d u c t o r . s o m e j i t t e r i s n o r m a l d u r i n g t r a n s i t i o n f r o m p f m t o p w m m o d e ; t h e t r a n s i t i o n o f t h e p f m t o p w m i s d e p e n d e n t o n t h e i n d u c t a n c e v a l u e s , v i n , a n d v o u t . t h e o u t p u t r i p p l e i s h i g h e r d u r i n g p f m o p e r a t i o n , a l a r g e r o u t p u t c a p a c i t o r c a n b e u s e d t o m i n i m i z e t h e o u t p u t r i p p l e . s y n c h r o n o u s r e c t i f i c a t i o n t h e a p w 7 0 7 5 h a s a n i n t e r n a l n - c h a n n e l a n d a p - c h a n - n e l m o s f e t , i t i s n o n e e d f o r e x t e r n a l c o m p o n e n t s , t h e i n t e r n a l l o w r d s ( o n ) p - c h a n n e l m o s f e t r e p l a c e s t h e d i s c r e t e s c h o t t k y d i o d e , a n d i t i s r e d u c i n g c o s t a n d b o a r d s p a c e . d u r i n g t h e c y c l e o f f t i m e , t h e p - c h a n - n e l m o s f e t t u r n s o n , a n d t h e p o w e r d i s s i p a t i o n o n t h e p - c h a n n e l m o s f e t i s l o w e r t h a n d i s c r e t e s c h o t t k y d i o d e , t h u s t h e c o n v e r s i o n e f f i c i e n c y c a n b e i m p r o v e d . s h u t d o w n s o f t s t a r t t h e a p w 7 0 7 5 p r o v i d e s t h e s o f t - s t a r t f u n c t i o n t o g e t t h e c o n t r o l l e d o u t p u t v o l t a g e r i s e . w h e n b a t t e r y v o l t - a g e ( < 1 . 8 v ) i s s u p p l i e d t o t h e d e v i c e a n d e x c e e d s t h e s t a r t - u p v o l t a g e , t h e i n t e r n a l n - c h a n n e l a n d p - c h a n n e l m o s f e t s s t a r t t o s w i t c h a n d p u m p u p t h e o u t p u t v o l t - a g e t o 1 . 8 v ( i f t h e b a t t e r y v o l t a g e i s o v e r 1 . 8 v , t h e o u t p u t v o l t a g e w i l l e q u a l b a t t e r y v o l t a g e d u r i n g t h i s t i m e ) , w h i c h c o n t r o l c i r c u i t r y c a n o p e r a t e n o r m a l l y . t h e s o f t s t a r t c o n t r o l s t h e r i s e o f i n t e r n a l r e f e r e n c e v o l t a g e , w h e n t h e i n t e r n a l r e f e r e n c e v o l t a g e e x c e e d s t h e f e e d b a c k v o l t a g e w h i c h i s d i v i d e d b y t h e r e s i s t o r f r o m o u t p u t v o l t a g e , t h e s o f t - s t a r t c i r c u i t w i l l c o n t r o l t h e o u t p u t v o l t a g e u n t i l t h e o u t p u t v o l t a g e i s i n r e g u l a t i o n . t h e s o f t - s t a r t i n t e r v a l i s a p p r o x i m a t e l y 3 0 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 1 7 f u n c t i o n d e s c r i p t i o n ( c o n t . ) l o w b a t t e r y d e t e c t i o n t h e l o w b a t t e r y d e t e c t i o n i s u s e d t o m o n i t o r t h e b a t - t e r y v o l t a g e a n d t o g e n e r a t e a s i g n a l . t h i s f u n c t i o n i n c l u d e s t w o p i n s , l b i i s t h e i n v e r t i n g i n p u t o f t h e c o m - p a r a t o r a n d l b o i s a n o p e n d r a i n o u t p u t ( s e e b l o c k d i a g r a m ) . w h e n t h e l b i v o l t a g e d r o p s b e l o w t h e t h r e s h o l d v o l t a g e 0 . 6 v , t h e o p e n d r a i n d e v i c e w i l l t u r n o n a n d l b o b e c o m e s l o w . t h e l o w b a t t e r y t h r e s h o l d v o l t a g e c a n b e p r o g r a m m e d w i t h a r e s i s t i v e d i v i d e r f r o m b a t t e r y t o l b i p i n t o g r o u n d . s i n c e t h e l b o i s a n o p e n d r a i n o u t p u t , i t u s u a l l y r e q u i r e s a n e x t e r n a l p u l l - u p r e s i s t o r . a p p l i c a t i o n i n f o r m a t i o n o u t p u t v o l t a g e s e l e c t i o n t h e o u t p u t v o l t a g e o f a p w 7 0 7 5 c a n b e a d j u s t e d b y a n e x t e r n a l r e s i s t o r d i v i d e r , o r c o n n e c t f b p i n t o o u t f o r 3 . 3 v a n d t o g r o u n d f o r 2 . 5 v ( s e e a p p l i c a t i o n s c h e m a t i c ) . t h e i n t e r n a l r e f e r e n c e v o l t a g e i s 1 . 2 v a n d t h e a l l o w e d o u t p u t v o l t a g e i s f r o m 2 . 5 v t o 5 . 5 v . t h e f o l l o w i n g e q u a t i o n c a n b e u s e d t o c a l c u l a t e t h e o u t p u t v o l t a g e : p r o g r a m m i n g l o w b a t t e r y t h r e s h o l d v o l t a g e t h e l o w b a t t e r y t h r e s h o l d v o l t a g e c a n b e p r o g r a m m e d w i t h a r e s i s t i v e d i v i d e r f r o m b a t t e r y t o l b i p i n t o g r o u n d ( s e e a p p l i c a t i o n s c h e m a t i c ) . t h e i n t e r n a l r e f e r e n c e v o l t a g e i s 0 . 6 v , a n d t h e l o w b a t t e r y t h r e s h o l d v o l t a g e m u s t b e b e l o w t h e b a t t e r y v o l t a g e . t h e f o l l o w i n g e q u a - t i o n c a n b e u s e d t o c a l c u l a t e t h e l o w b a t t e r y t h r e s h - o l d v o l t a g e : 0.6v r4 r3 1 v th - bat + = ? ? ? ? i n d u c t o r s e l e c t i o n t h e a p w 7 0 7 5 w o r k s w e l l w i t h a 2 2 u h i n d u c t o r i n m o s t a p p l i c a t i o n s . t h e i n d u c t a n c e v a l u e s d e t e r m i n e t h e i n - d u c t o r r i p p l e c u r r e n t a n d a f f e c t t h e o u t p u t c u r r e n t . h i g h e r i n d u c t a n c e v a l u e s r e d u c e r i p p l e a n d i m p r o v e e f f i c i e n c y . l o w e r i n d u c t a n c e v a l u e s h a v e f a s t r e s p o n s e b u t i n c r e a s e t h e r i p p l e a n d r e d u c e t h e e f f i c i e n c y . t h e m a x i m u m a l l o w e d l x c u r r e n t i s 1 a ( t h e m a x i m u n . o u t p u t c u r r e n t s h o w 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 ) a n d s o t h e p e a k i n d u c t o r c u r r e n t c a n n o t e x c e e d i t . t h e f o l l o w i n g e q u a t i o n s c a l c u l a t e t h e i n d u c t o r c u r r e n t , a n d o u t p u t c u r r e n t . ( ) f l d 1 v (v il in out - - = d ) i o u t = i l x ( 1 - d ) l d o t h e o u t p u t v o l t a g e h a s t w o o p e r a t i o n m o d e s . w h e n v i n e x c e e d s 3 . 9 v , t h e o u t p u t w i l l b e c o m e t h e l d o r e g u l a t o r a n d t h e s t e p - u p c o n v e r t e r w i l l b e d i s a b l e d . t h e l d o o u t p u t i s a p - c h a n n e l l o w d r o p o u t r e g u l a t o r w i t h 1 a c u r r e n t l i m i t . w h e n t h e v i n i s b e l o w 3 . 8 v , t h e o u t p u t w i l l r e t u r n t o t h e s t e p - u p c o n v e r t e r , a n d t h e l d o m o d e w i l l b e d i s a b l e d . n o t e t h a t w h e n l d o m o d e i s u s e d , t h e o u t p u t v o l t a g e s h o u l d b e u n d e r 3 . 8 v 1.2v r2 r1 1 v out + = ? ? ? ? w h e r e : d = out in out v v 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 1 8 f u n c t i o n d e s c r i p t i o n ( c o n t . ) b o o s t c o n v e r t e r i n p u t c a p a c i t o r s e l e c t i o n a t l e a s t a 1 0 u f i n p u t c a p a c i t o r i s r e c o m m e n d e d t o s t a b i l i z e t h e b a t t e r y v o l t a g e a n d m i n i m i z e t h e p e a k c u r r e n t r i p p l e f r o m t h e b a t t e r y . l d o i n p u t c a p a c i t o r s e l e c t i o n t h e l d o i n p u t c a p a c i t o r w i t h l a r g e r v a l u e s a n d l o w e r e s r s p r o v i d e 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 . a t l e a s t a 1 0 u f c a p a c i t o r i s r e c o m m e n d e d . o u t p u t c a p a c i t o r s e l e c t i o n l a y o u t c o n s i d e r a t i o n s t h e c o r r e c t p c b l a y o u t i s i m p o r t a n t f o r a l l s w i t c h i n g c o n v e r t e r s . i f t h e l a y o u t i s n o t c a r e f u l l y d o n e , t h e r e g u - l a t o r c o u l d s h o w s t a b i l i t y p r o b l e m s a s w e l l a s e m i p r o b l e m s . f i g u r e . 5 i l l u s t r a t e s t h e l a y o u t g u i d e l i n e s , t h e b o l d l i n e s i n d i c a t e t h e h i g h c u r r e n t p a t h s ; t h e s e t r a c e s m u s t b e s h o r t a n d w i d e . t h e i n p u t c a p a c i t o r s , o u t p u t c a p a c i t o r s , a n d t h e i n d u c t o r s h o u l d b e a s c l o s e t o t h e i c a s p o s s i b l e . u s e a c o m m o n g r o u n d p l a n e f o r p o w e r g r o u n d a n d a d i f f e r e n t o n e f o r c o n t r o l g r o u n d t o m i n i m i z e t h e e f f e c t s o f g r o u n d n o i s e . c o n n e c t t h e s e g r o u n d p l a n e s a t a n o d e c l o s e t o t h e g n d p i n o f i c . t h e f e e d b a c k a n d l b i r e s i s t o r d i v i d e r s s h o u l d b e p l a c e d a s c l o s e t o t h e i c a s p o s s i b l e . esr) v f c v v i voripple out sw out bat out out + - = ( r e c o m m e n d e d , a 1 u f c e r a m i c c a p a c i t o r i n p a r a l l e l f o r b y p a s s i n g t h e n o i s e i s a l s o r e c o m m e n d e d . t h e f o l - l o w i n g e q u a t i o n c a l c u l a t e s t h e o u t p u t r i p p l e . t h e i n d u c t o r ? s d c r e s i s t a n c e a f f e c t s t h e e f f i c i e n c y ; l a r g e r r e s i s t a n c e d i s s i p a t e s m o r e p o w e r , i t s h o u l d b e a s s m a l l a s p o s s i b l e . i t i s i m p o r t a n t t o c h o o s e t h e i n d u c t o r ? s s a t u r a t i o n c u r r e n t r a t i n g g r e a t e r t h a n t h e p e a k c u r r e n t w h i c h t h e i n d u c t o r w i l l f l o w i n t h e a p p l i c a t i o n . t h e o u t p u t c a p a c i t o r i s u s e d f o r s u p p l y i n g t h e o u t p u t d u r i n g i n t e r n a l n - c h a n n e l m o s f e t t u r n s o n t i m e . l a r g e r c a p a c i t a n c e a n d l o w e r e s r r e d u c e t h e o u t p u t v o l t a g e r i p p l e . t h e o u t p u t v o l t a g e s u p p l i e s t h e p o w e r t o t h e i c a n d s o t h e o u t p u t v o l t a g e r i p p l e m u s t b e a s s m a l l a s p o s s i b l e t o p r o v i d e b e t t e r p s r r . i n g e n e r a l , a 1 0 0 u f t o 2 2 0 u f l o w e s r t a n t a l u m c a p a c i t o r i s i n d u c t o r s e l e c t i o n ( c o n t . ) f i g u r e 5 . r e c o m m e n d e d l a y o u t d i a g r a m apw7075 1 vin shdn lbi lbo out lx gnd fb 2 3 4 8 7 6 5 vbat usb 5v c2 100uf c1 10uf 22uh c3 10uf c4 1uf vout 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 1 9 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 2 0 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 1.2 0.047 a1 0.00 0.15 0.000 0.006 a2 0.80 1.05 0.031 0.041 b 0.19 0.30 0.007 0.012 d 2.9 3.1 0.114 0.122 e 0.65 bsc 0.026 bsc e 6.40 bsc 0.252 bsc e1 4.30 4.50 0.169 0.177 l 0.45 0.75 0.018 0.030 l1 1.0 ref 0.039ref r 0.09 0.004 r1 0.09 0.004 s 0.2 0.008 f 1 0 8 0 8 f 2 12 ref 12 ref f 3 12 ref 12 ref l (l1) ( 3) s ( 2) 0.25 gauge plane 1 b d e 2 x e / 2 8 1 2 e/2 e1 e 7 a1 a2 a t s s o p - 8 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 2 1 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 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. 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 2 2 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 & r e e l d i m e n s i o n s 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 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 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 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 . 5 - a u g . , 2 0 0 5 a p w 7 0 7 5 w w w . a n p e c . c o m . t w 2 3 c o v e r t a p e d i m e n s i o n s anpec electronics corp. 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 c u s t o m e r s e r v i c e application carrier width cover tape width devices per reel sop - 8 - p 12 9.3 2500 tssop - 8 12 9.3 2500 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 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 tssop - 8 5.5 0. 1 1.5 + 0.1 1.5 + 0.1 4.0 0.1 2.0 0.1 7.0 0.1 3.6 0.3 1.6 0.1 0.3 0.013 a j b t2 t1 c ( m m ) c a r r i e r t a p e & r e e l d i m e n s i o n s ( c o n t . ) |
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