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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 . 7 - j u n . , 2 0 0 8 a p w 7 0 3 7 a / b 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 . 8 - p i n s y n c h r o n o u s b u c k p w m c o n t r o l l e r o p e r a t i n g w i t h s i n g l e 5 v o r 1 2 v i n p u t d r i v e s n - c h a n n e l m o s f e t s s i m p l e s i n g l e - l o o p c o n t r o l d e s i g n - v o l t a g e - m o d e p w m c o n t r o l - f u l l 0 % t o 1 0 0 % d u t y r a t i o - f a s t t r a n s i e n t r e s p o n s e 2 % o u t p u t v o l t a g e a c c u r a c y o v e r t e m p e r a t u r e u n d e r - v o l t a g e p r o t e c t i o n f o r o u t p u t 2 0 0 / 4 0 0 k h z c o n s t a n t f r e q u e n c y o p e r a t i o n - 2 0 0 k h z f o r a p w 7 0 3 7 b - 4 0 0 k h z f o r a p w 7 0 3 7 a s m a l l s i z e , 8 - p i n p a c k a g e ( s o i c o r t s s o p ) l e a d f r e e a n d g r e e n d e v i c e s a v a i l a b l e ( r o h s c o m p l i a n t ) f e a t u r e s a p p l i c a t i o n s g r a p h i c s c a r d s d d r m e m o r y p o w e r s u p p l y d d r m e m o r y t e r m i n a t i o n v o l t a g e l o w - v o l t a g e d i s t r i b u t e d p o w e r s u p p l i 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 w 7 0 3 7 s e r i e s a r e d e s i g n e d t o p r o v i d e a l o w c o s t s y n c h r o n o u s b u c k r e g u l a t o r f o r o n - b o a r d d c t o d c c o n - v e r t e r a p p l i c a t i o n s . t h e a p w 7 0 3 7 s e r i e s t o g e t h e r w i t h d u a l n - c h a n n e l m o s f e t s s u c h a s a p m 7 3 1 3 , p r o v i d e a l o w c o s t s o l u t i o n f o r s u c h a p p l i c a t i o n s . e a c h d e v i c e f e a - t u r e s a n i n t e r n a l 2 0 0 / 4 0 0 k h z o s c i l l a t o r , p o w e r - o n - r e s e t ( p o r ) f o r b o t h v c c a n d v c s u p p l i e s , a n e x t e r n a l p r o - g r a m m a b l e s o f t - s t a r t f u n c t i o n a s w e l l a s o u t p u t u n d e r - v o l t a g e d e t e c t i o n t h a t l a t c h e s o f f t h e d e v i c e w h e n a n o u t - p u t s h o r t i s d e t e c t e d . p i n c o n f i g u r a t i o n 1 2 3 4 5 6 7 8 fb vcc ldrv gnd hdrv vc comp ss
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 . 7 - j u n . , 2 0 0 8 a p w 7 0 3 7 a / b w w w . a n p e c . c o m . t w 2 a b s o l u t e m a x i m u m r a t i n g s symbol parameter rating unit v cc vcc to gnd - 0.2~30 v v c vc to gnd - 0.2~30 v t j operating junction temperature 0~125 c t stg storage temperature - 65~150 c t sdr maximum lead soldering temperature, 10 seconds 260 c 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 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 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 . a n p e c d e f i n e s ? g r e e n ? t o m e a n l e a d - f r e e ( r o h s c o m p l i a n t ) a n d h a l o g e n f r e e ( b r o r c l d o e s n o t e x c e e d 9 0 0 p p m b y w e i g h t i n h o m o g e n e o u s m a t e r i a l a n d t o t a l o f b r a n d c l d o e s n o t e x c e e d 1 5 0 0 p p m b y w e i g h t ) . t h e r m a l c h a r a c t e r i s t i c s symbol parameter typical value unit q ja thermal resistance in free air sop - 8 tssop - 8 160 124 c/w apw7037a/b handling code temperature range package code apw7037a/b k : apw7037a/b xxxxx xxxxx - date code apw7037a/b xxxxx xxxxx - date code assembly material package code k : sop-8 o : tssop-8 operating junction temperature range c : 0 to 70 o c handling code tr : tape & reel assembly material l : lead free device g : halogen and lead free device apw7037a/b o :
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 . 7 - j u n . , 2 0 0 8 a p w 7 0 3 7 a / b w w w . a n p e c . c o m . t w 3 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 unless otherwise specified, these specifications apply over v cc =5v, v c =12v and t a =0 to 70 c . typical values refer to t a =25 c. apw7037/a/b symbol parameter test conditions min. typ. max. unit supply current icc vcc dynamic supply current fosc=200k hz, cl=1500pf 2 3 5 ma ic vc dynamic supply current fosc=200khz, cl=1500pf 2 5.5 8 ma iccq vcc static supply current ss=gnd 0.5 1.5 3 ma icq vc static supply current ss=gnd 0.2 0.4 1 ma power - on - reset rising vcc threshold 4.0 4.2 4.4 v vcc por hy steresis - 0.25 - v rising vc threshold 3.1 3.3 3.5 v vc por hysteresis - 0.2 - v oscillator fosc free running frequency apw7037a apw7037b 360 180 400 200 440 220 khz d v osc ramp amplitude - 1.10 - v error amplifier ifb1 fb pin input bias curr ent ss=3v, vfb=1v - 1 - na ifb2 fb pin input bias current ss=0v, vfb=1v - - 64 - m a gm transconductance 450 600 750 m mho reference voltage vfb fb pin regulation voltage apw7037a apw7037b 0. 784 0.784 0. 800 0.800 0. 816 0.816 v lreg vfb lin e regulation vcc = 5~12v - 0.2 0.35 % gate drivers hdrv rising time cl = 1500pf - 20 50 ns hdrv falling time cl = 1500pf - 15 50 ns ldrv rising time cl = 1500pf - 25 50 ns ldrv falling time cl = 1500pf - 25 50 ns dead band time 50 150 250 ns protection vfbuv fb under - voltage threshold vfb falling apw7037a apw7037b 0.3 0.3 0.4 0.4 0.5 0.5 v v sd shutdown threshold voltage pull the voltage of ss pin - 0.5 - v i ss soft - start current ss=0 10 20 30 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 . 7 - j u n . , 2 0 0 8 a p w 7 0 3 7 a / b w w w . a n p e c . c o m . t w 4 f b ( p i n 1 ) c o n n e c t t h i s p i n t o t h e o u t p u t ( v o u t ) o f t h e p w m c o n - v e r t e r v i a 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 t o p r o v i d e a v o l t a g e f e e d b a c k p a t h f o r t h e c o n v e r t e r . t h e o u t p u t v o l t a g e s e t b y t h e r e s i s t o r d i v i d e r i s d e t e r m i n e d u s i n g t h e f o l l o w i n g f o r - m u l a : v o u t = v r e f x w h e r e r o u t i s t h e r e s i s t o r c o n n e c t e d f r o m v o u t t o f b , a n d r g n d i s t h e r e s i s t o r c o n n e c t e d f r o m f b t o g r o u n d . t h e v o l t a g e a t t h i s p i n i s a l s o m o n i t o r e d f o r u n d e r - v o l t - a g e p r o t e c t i o n . v c c ( p i n 2 ) c o n n e c t t h i s p i n t o i n p u t v o l t a g e f r o m 5 v t o 2 0 v . t h i s p i n p r o v i d e s t h e b i a s f o r t h e c o n t r o l c i r c u i t r y a n d t h e l o w - s i d e p o w e r m o s f e t d r i v e r ( l d r v ) . t h e v o l t a g e a t t h i s p i n i s m o n i t o r e d f o r p o w e r - o n - r e s e t ( p o r ) p u r p o s e . l d r v ( p i n 3 ) c o n n e c t t h i s p i n t o t h e g a t e o f t h e l o w - s i d e p o w e r m o s f e t . t h i s p i n p r o v i d e s t h e g a t e d r i v e f o r t h e m o s f e t . 1+ r out r gnd ( ) f u n c t i o n p i n d e s c r i p t i o n g n d ( p i n 4 ) s i g n a l a n d p o w e r g r o u n d f o r t h e i c . a l l v o l t a g e l e v e l s a r e m e a s u r e d w i t h r e s p e c t t o t h i s p i n . h d r v ( p i n 5 ) c o n n e c t t h i s p i n t o t h e g a t e o f t h e h i g h - s i d e p o w e r m o s f e t . t h i s p i n p r o v i d e s t h e g a t e d r i v e f o r t h e m o s f e t . v c ( p i n 6 ) t h i s p i n p r o v i d e s b i a s v o l t a g e t o t h e h i g h - s i d e m o s f e t d r i v e r . a b o o t s t r a p c i r c u i t m a y b e u s e d t o p u m p a b o o t v o l t a g e f o r e n f o r c i n g t h e d r i v i n g c a p a b i l i t y o f t h e g a t e d r i v e r a n d i m p r o v i n g t h e p e r f o r m a n c e o f t h e m o s f e t . c o m p ( p i n 7 ) t h i s p i n i s t h e o u t p u t o f t h e e r r o r a m p l i f i e r . a d d a n e x t e r - n a l r e s i s t o r - c a p a c i t o r n e t w o r k t o p r o v i d e a l o o p c o m p e n - s a t i o n f o r t h e p w m c o n v e r t e r . s s ( p i n 8 ) c o n n e c t a c a p a c i t o r f r o m t h i s p i n t o g r o u n d . t h i s c a p a c i t o r , a l o n g w i t h a n i n t e r n a l 2 0 m a c u r r e n t s o u r c e , s e t s t h e s o f t - s t a r t i n t e r v a l o f t h e p w m c o n v e r t e r a n d p r e v e n t s t h e o u t - p u t s f r o m o v e r s h o o t a s w e l l a s l i m i t s t h e i n p u t c u r r e n t . p u l l t h i s p i n b e l o w 0 . 5 v c a n s h u t d o w n t h e c o n v e r t e r .
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 . 7 - j u n . , 2 0 0 8 a p w 7 0 3 7 a / b w w w . a n p e c . c o m . t w 5 vcc vcc vc hdrv ldrv osc gate control v ref ss 20ua 3.3v gnd f osc comp error amp. fb pwm 25k 25k v fbuv under-voltage regulator 4.5v max. 64ua por power on reset b l o c k d i a g r a m 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 1 . d u a l s u p p l y v o l t a g e ( 5 v a n d 1 2 v ) a p p l i c a t i o n v in +5v v out 1.5v/5 a c7 0.1uf c5 1uf c4 100uf c3 47uf c6,c9 2 x 150uf r1 249 r2 1.24k q1a apm7313 l3 1uh hdrv 5 ldrv 3 vc 6 fb 1 vcc 2 gnd 4 ss 8 comp 7 c8 2200pf r3 24k q1b apm7313 c1 1uf l4 3.3uh u1 apw7037a/b c2 1uf +12v q2 apm2300 a shutdown r4 3
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 . 7 - j u n . , 2 0 0 8 a p w 7 0 3 7 a / b w w w . a n p e c . c o m . t w 6 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 ( c o n t . ) 2 . s i n g l e s u p p l y v o l t a g e ( 5 v ) a p p l i c a t i o n v in +5v v out 1.5v/5 a c8 0.1uf c3 0.1uf c6 1uf c5 100uf c4 47uf c7,c10 2 x150uf r1 249 r2 1.24k q1a apm7312 l3 1uh hdrv 5 ldrv 3 vc 6 fb 1 vcc 2 gnd 4 ss 8 comp 7 c9 2200pf r3 24k q1b apm7312 c1 1uf d1 1n4148 l4 3.3uh u1 apw7037a/b d2 1n4148 c2 1uf q2 apm2300 a shutdown r4 3 d3 1n4148 3 . l c d m o n i t o r a p p l i c a t i o n c i r c u i t v in 9v~22v v out 5v / 0.2~5 a c8 0.1uf c3 0.1uf c6 1uf c5 470uf c4 47uf c7,c10 2 x470uf r1 3k r2 1k q1a apm7313 l3 1uh hdrv 5 ldrv 3 vc 6 fb 1 vcc 2 gnd 4 ss 8 comp 7 c9 2200pf r3 24k q1b apm7313 c1 1uf d1 1n4148 l4 50uh u1 apw7037a/b d2 1n4148 c2 1uf r4 3 u2 apl431 r5 18k r6 10k r7 1k r9 12 q2 2n3904 r8 0 c11 1uf r10 12 c12 0.1uf extra circuit for vin>15v application
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 . 7 - j u n . , 2 0 0 8 a p w 7 0 3 7 a / b w w w . a n p e c . c o m . t w 7 p a c k a g e i n f o r m a t i o n s o p - 8 s y m b o l min. max. 1.75 0.10 0.17 0.25 0.25 a a1 c d e e1 e h l millimeters b 0.31 0.51 sop-8 0.25 0.50 0.40 1.27 min. max. inches 0.069 0.004 0.012 0.020 0.007 0.010 0.010 0.020 0.016 0.050 0 0.010 1.27 bsc 0.050 bsc a2 1.25 0.049 0 8 0 8 d e e e 1 see view a c b h x 4 5 a a 1 a 2 l view a 0 . 2 5 seating plane gauge plane note: 1. follow jedec ms-012 aa. 2. dimension ? d ? does not include mold flash, protrusions or gate burrs. mold flash, protrusion or gate burrs shall not exceed 6 mil per side. 3. dimension ? e ? does not include inter-lead flash or protrusions. inter-lead flash and protrusions shall not exceed 10 mil per side. 3.80 5.80 4.80 4.00 6.20 5.00 0.189 0.197 0.228 0.244 0.150 0.157
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 . 7 - j u n . , 2 0 0 8 a p w 7 0 3 7 a / b w w w . a n p e c . c o m . t w 8 p a c k a g e i n f o r m a t i o n t s s o p - 8 s y m b o l min. max. 1.20 0.05 0.09 0.20 2.90 3.10 0.15 a a1 c d e1 l e millimeters b 0.19 0.30 0.65 bsc tssop-8 4.30 4.50 0.026 bsc min. max. inches 0.047 0.002 0.007 0.012 0.004 0.008 0.114 0.122 0.244 0.260 0.169 0.177 0 0.006 a2 0.80 1.05 6.20 6.60 e 0.031 0.041 note : 1. follow jedec mo-153 aa 2. dimension "d" does not include mold flash, protrusions or gate burrs. mold flash, protrusion or gate burrs shall not exceed 6 mil per side. 3. dimension "e1" does not include inter-lead flash or protrusions. inter-lead flash and protrusions shall not exceed 10 mil per side. s 8 0 8 0 d e 1 e e b a 2 a a 1 view a seating plane gauge plane 0 . 2 5 l see view a c 0.45 0.75 0.018 0.030
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 . 7 - j u n . , 2 0 0 8 a p w 7 0 3 7 a / b w w w . a n p e c . c o m . t w 9 application a h t1 c d d w e1 f 330.0 ? 2.00 50 min. 12.4+2.00 - 0.00 13.0+0.50 - 0.20 1.5 min. 20.2 min. 12.0 ? 0.30 1.75 ? 0.10 5.5 ? 0.05 p 0 p1 p 2 d 0 d1 t a 0 b 0 k 0 sop - 8 4.0 ? 0.10 8.0 ? 0.10 2.0 ? 0.05 1.5+0.10 - 0.00 1.5 min. 0.6+0.00 - 0.40 6.40 ? 0.20 5.20 ? 0.20 2.10 ? 0.20 application a h t1 c d d w e1 f 330.0 ? 2.00 50 min. 12.4+2.00 - 0.00 13.0+0.50 - 0.20 1.5 min. 20.2 min. 12.0 ? 0.30 1.75 ? 0.10 5.5 ? 0.10 p 0 p1 p 2 d 0 d1 t a 0 b 0 k 0 tssop - 8 4.00 ? 0.10 8.00 ? 0.10 2.00 ? 0.05 1.5+0.10 - 0.00 1.5 min. 0.6+0.00 - 0.40 6.90 ? 0.20 3.40 ? 0.20 1.60 ? 0.20 (mm) d e v i c e s p e r u n i t 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 package type unit quantity s op - 8 tape & reel 2500 tssop - 8 tape & reel 2500 a e 1 a b w f t p0 od0 b a0 p2 k0 b 0 section b-b section a-a od1 p1 h t1 a 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 . 7 - j u n . , 2 0 0 8 a p w 7 0 3 7 a / b w w w . a n p e c . c o m . t w 1 0 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 /classification 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/sec ond max. 6 c/second max. time 25 c to peak temperature 6 minutes max. 8 minutes max. note: all temperatures refer to topside of the package. measured on the body surface. 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 r e l i a b i l i t y t e s t p r o g r a m t 25 c to peak tp ramp-up t l ramp-down ts preheat tsmax tsmin t l t p 25 t e m p e r a t u r e time critical zone t l to t 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 . 7 - j u n . , 2 0 0 8 a p w 7 0 3 7 a / b w w w . a n p e c . c o m . t w 1 1 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. table 1. snpb eutectic 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 u s t o m e r s e r v i c e 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 tel : 886-3-5642000 fax : 886-3-5642050 t a i p e i b r a n c h : 2 f , n o . 1 1 , l a n e 2 1 8 , s e c 2 j h o n g s i n g r d . , s i n d i a n c i t y , t a i p e i c o u n t y 2 3 1 4 6 , t a i w a n t e l : 8 8 6 - 2 - 2 9 1 0 - 3 8 3 8 f a x : 8 8 6 - 2 - 2 9 1 7 - 3 8 3 8

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