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| l i + b a t t e r y c h a r g e r a n d l o w d r o p o u t l i n e a r r e g u l a t o r c o m 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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 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 . programmable charge current up to 700ma charge status output pin soft-start limits inrush current 4.2v charge termination voltage with 1% accuracy 4 5 m a p r e - c h a r g e c u r r e n t ( r s e t = 2 k ) t h e r m a l r e g u l a t i o n o f c h a r g e c u r r e n t s i m p l i f i e s b o a r d d e s i g n charger enable/disable control ultra low regulator quiescent current: 4 m a fixed ldo regulator output voltage: 3.3v low regulator dropout voltage: 200mv@150ma ldo regulator current limit protection ldo regulator short circuit current limit ldo regulator thermal protection small 3mmx3mm dfn 10-pin (dfn-10) package lead free and green devices available (rohs compliant) f e a t u r e s a p p l i c a t i o n s pdas mp3 players cell phones wireless appliances g e n e r a l d e s c r i p t i o n s i m p l i f i e d a p p l i c a t i o n c i r c u i t the APL3207 combines a constant-current/constant-volt- age linear single cell li+ battery charger with a low drop- out linear regulator. both charger and linear regulators can work independently. the small dfn-10 package and low external component count make the APL3207 ideally suit to portable applications. t h e c h a r g e r o f a p l 3 2 0 7 p r o v i d e s 0 . 7 a c h a r g e c u r r e n t w i t h t h e r m a l r e g u l a t i o n p r o t e c t i o n t o o p t i m i z e t h e b o a r d d e s i g n f o r c o m p a c t s i z e a n d t y p i c a l t h e r m a l c o n d i t i o n s . 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 r e a c h e s t h e t h e r m a l r e g u - l a t i o n t h r e s h o l d , t h e c h a r g e r d o e s n o t s h u t d o w n b u t s i m - p l y r e d u c e s t h e c h a r g e c u r r e n t . t h e c h a r g e c u r r e n t c a n b e p r o g r a m m e d b y c o n n e c t i n g a n e x t e r n a l r e s i s t o r f r o m t h e i s e t p i n t o t h e g n d . u s i n g a n e x t e r n a l m o s f e t t o d i s c o n n e c t t h e r e s i s t o r f r o m t h e g r o u n d s h u t s d o w n t h e c h a r g e r , a n d r e d u c e s t h e i n p u t c u r r e n t d o w n t o 2 5 m a . t h e a p l 3 2 0 7 a l s o h a s t h e s t a t p i n t o i n d i c a t e c h a r g e s t a t u s . the ldo regulator of APL3207 can deliver up to 150ma current and dropout voltage is only 200mv. the 4 m a low quiescent current makes it ideally suit to battery-power systems. the ldo regulator also has built-in current limit and thermal shutdown protection. p i n c o n f i g u r a t i o n 8 stat batt 2 gnd 3 ldoin 4 vin 1 nc 5 6 ldoout 9 gnd 7 ldoout 10 iset gnd (bottom) APL3207 dfn-10 3x3 top view vin iset stat batt ldoin ldoout gnd usb / adapter 5 v 3 . 3 v li + battery batt
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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 w w w . a n p e c . c o m . t w 2 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 a b s o l u t e m a x i m u m r a t i n g s (note 1) symbol parameter rating unit v in , v ldoin vin, vldoin to gnd voltage - 0.3 to 7 v v set , v stat , v batt iset, stat, batt to gnd voltage - 0.3 to 7 v i chg charge current 800 ma p d power dissipation internally limited w t j maximum junction temperature - 40 to 150 o c t stg storage temperature range - 65 to 150 o c t sdr maximum lead soldering temperature , 10 seconds 260 o c n o t e 1 : s t r e s s e s b e y o n d t h o s e l i s t e d u n d e r " 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 s t r e s s r a t i n g s o n l y a n d 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 u n d e r " 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 " 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 a f f e c t d e v i c e r e l i a b i l i t y . symbol parameter typical value unit q ja junction to ambient resistance in free air dfn3x3 - 10 50 c/w t h e r m a l c h a r a c t e r i s t i c (note 2) n o t e 2 : q j a i s m e a s u r 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 h i g h 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 . t h e e x p o s e d p a d o f d f n - 1 0 i s d o l d e r e d d i r e c t l y o n t h e p c b . package code qa : dfn3x3-10 operating ambient temperature range i : - 40 to 85 o c handling code tr : tape & reel assembly material l : lead free device g : halogen and lead free device APL3207 handling code temperature range package code apl 3207 xxxxx APL3207 qa : xxxxx - date code assembly material note: anpec lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully compliant with rohs. anpec lead-free products meet or exceed the lead-free requirements of ipc/jedec j-std-020c for msl classification at lead-free peak reflow temperature. anpec defines ?green? to mean lead-free (rohs compliant) and halogen free (br or cl does not exceed 900ppm by weight in homogeneous material and total of br and cl does not exceed 1500ppm by weight). symbol parameter range unit v in vin to gnd voltage 4.35 to 6.5 v i chg charge current 0.1 to 0. 7 a v ldoin ldoin to gnd voltage 3.6 to 6.5 v i ldo ldo output current 0 to 0.15 a t a ambient temperature - 40 to 85 o c t j junction temperature - 40 to 125 o c 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 (note 3) note 3 : refer to the typical application circuit. 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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 w w w . a n p e c . c o m . t w 3 r e f e r t o t h e 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 . 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 v i n = 5 v , v l d o i n = 5 v , t a = - 4 0 ~ 8 5 o 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 . t y p i c a l v a l u e s a r e a t t a = 2 5 o c . APL3207 symbol parameter test conditions min . typ . max . unit supply current charge mode, r set =10 k - 300 600 standby mode (charge terminated) - 200 500 i in vin supply current shutdown mode (r set not connect, v in 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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 w w w . a n p e c . c o m . t w 6 t y p i c a l o p e r a t i n g c h a r a c t e r i s t i c s ( c o n t . ) p r e c h a r g e t h r e s h o l d v o l t a g e v s . j u n c t i o n t e m p e r a t u r e r e c h a r g e t h r e s h o l d v o l t a g e v s . j u n c t i o n t e m p e r a t u r e c h a r g e c u r r e n t v s . b a t t v o l t a g e c h a r g e c u r r e n t v s . v i n s u p p l y v o l t a g e c h a r g e c u r r e n t v s . a m b i e n t t e m p e r a t u r e p o w e r f e t o n r e s i s t a n c e v s . j u n c t i o n t e m p e r a t u r e ( r e f e r t o t h e s e c t i o n ? 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 ? , v i n = 5 v , v l d o i n = 5 v , t a = 2 5 o 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 ) 3.99 4.01 4.03 4.05 4.07 4.09 4.11 -50 -25 0 25 50 75 100 r e c h a r g e t h r e s h o l d v o l t a g e ( v ) v in = 5v r set = 10k junction temperature ( o c ) 2.5 2.6 2.7 2.8 2.9 3 3.1 3.2 -50 -25 0 25 50 75 100 p r e c h a r g e t h r e s h o l d v o l t a g e ( v ) junction temperature ( o c ) v in = 5v r set = 10k 0 100 200 300 400 500 600 4 4.5 5 5.5 6 6.5 t a =40 o c t a =70 o c v batt = 4v, r set = 2k v ldoin =v in , i ldo =150ma vin supply voltage (v) c h a r g e c u r r e n t ( m a ) 0 100 200 300 400 500 600 2.7 3 3.3 3.6 3.9 4.2 4.5 batt voltage (v) c h a r g e c u r r e n t ( m a ) t a =40 o c t a =70 o c v in = 5v, r set = 2k v ldoin =5v, i ldo =150ma 0 100 200 300 400 500 600 -50 -25 0 25 50 75 100 125 ambient temperature ( o c ) c h a r g e c u r r e n t ( m a ) v in = 5v, v batt = 4v v ldoin =5v, i ldo =0ma r set = 10k r set = 2k 0.3 0.5 0.7 0.9 1.1 1.3 1.5 -50 0 50 100 150 junction temperature p o w e r f e t o n r e s i s t a n c e ( o h m ) ( o c ) v in = 4.2v i chg = 0.1a 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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 w w w . a n p e c . c o m . t w 7 t y p i c a l o p e r a t i n g c h a r a c t e r i s t i c s ( c o n t . ) r e g u l a t o r q u i e s c e n t c u r r e n t v s . l d o i n s u p p l y v o l t a g e r e g u l a t o r o u t p u t v o l t a g e v s . l d o i n s u p p l y v o l t a g e r e g u l a t o r d r o p o u t v o l t a g e v s . r e g u l a t o r o u t p u t c u r r e n t r e g u l a t o r o u t p u t v o l t a g e v s . j u n c t i o n t e m p e r a t u r e r e g u l a t o r p s r r v s . f r e q u e n c y ( r e f e r t o t h e s e c t i o n ? 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 ? , v i n = 5 v , v l d o i n = 5 v , t a = 2 5 o 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 ) 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 0 1 2 3 4 5 6 r e g u l a t o r q u i e s c e n t c u r r e n t ( m a ) ldoin supply voltage (v) i ldo = 0ma 0 0.5 1 1.5 2 2.5 3 3.5 0 1 2 3 4 5 6 r e g u l a t o r o u t p u t v o l t a g e ( v ) ldo supply voltage (v) i ldo = 0ma 0 40 80 120 160 200 0 25 50 75 100 125 150 r e g u l a t o r d r o p o u t v o l t a g e ( v ) regulator output current (ma) t a = 25 o c i chg = 0ma junction temperature ( o c ) r e g u l a t o r o u t p u t v o l t a g e ( v ) 3.296 3.298 3.3 3.302 3.304 3.306 3.308 3.31 3.312 -40 -20 0 20 40 60 80 100 120 i ldo = 0ma +0 -90 -80 -70 -60 -50 -40 -30 -20 -10 r e g u l a t o r p s r r ( d b ) 1ma 50ma 100ma -100 10 100k 100 1k 10k frequency (hz) 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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 w w w . a n p e c . c o m . t w 8 o p e r a t i n g w a v e f o r m s ( r e f e r t o t h e s e c t i o n ? 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 ? , t h e t e s t c o n d i t i o n i s v i n = 5 v , t a = 2 5 o 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 ) 3 ch1: v ldoin , 1v/div, ac time: 0.1 ms/div ch3: v ldoout , 200mv/div, ac i ldo = 10ma ldo line transient response 1 v ldoout =3.3v v ldoin =4 to 5v ch2: v set , 2v/div, dc ch4: i chg , 0.2a/div, dc time: 0.1 ms/div ch3: v stat , 5v/div, dc r set = 2k, v batt =3.8v charger start-up (reconnecting r set to gnd) 4 4 3 2 i chg v stat v set ch1: v in , 2v/div, dc ch4: i chg , 0.2a/div, dc time: 0.1 ms/div r set = 2k, v batt =3.8v v in power on 1 4 1 4 v in i chg ch2: v set , 2v/div, dc ch4: i chg , 0.2a/div, dc time: 0.1 ms/div ch3: v stat , 5v/div, dc charger shutdown (disconnecting r set from gnd ) r set = 2k, v batt =3.8v 4 3 2 i chg v stat v set 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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 w w w . a n p e c . c o m . t w 9 o p e r a t i n g w a v e f o r m s ( c o n t . ) p i n d e s c r i p t i o n pin no. name function 1 vin charger input supply pin. provides power to the charger, v in can range from 4.35v to 6.5v and should be bypassed with at least a 1 m f capacitor. 2 batt charger output pin. connect this pin to the positive terminal of a li+ ba ttery. 4 ldoin ldo regulator input supply pin. provides power to the regulator, v ldoin can range from 3.6v to 6.5v and should be bypassed with at least a 1 m f capacitor. 5 nc no connection. 6,7 ldoout ldo regulator output. fixed at 3.3v output, sourcing up to 150ma. the pin6 and pin7 must be connected together. 8 stat open - drain charge status output pin. when the battery is charging, the stat pin is pulled low by an internal switch. in other states the stat pin is in a high impedance state. 3,9 gnd grou nd. pin3 and pin9 must be connected together. 10 iset charging current setting and shutdown pin. connecting a resistor from this pin to gnd set the charge current when the vin is powering the charger. disconnecting the r set from gnd allows an internal 2.5 m a current to pull the iset pin high, and when the iset pin voltage exceeds the shutdown threshold voltage, the charger enters shutdown mode. bottom pad gnd ground. connect the bottom side metal pad to back side ground plane through several vias to improv e power dissipation. ( r e f e r t o t h e s e c t i o n ? 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 ? , t h e t e s t c o n d i t i o n i s v l d o i n = 5 v , t a = 2 5 o 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 ) ch1: v ldoout , 50mv/div, ac ch3: i ldo , 50ma/div, dc time: 0.5 ms/div v ldoin = 5v ldo load transient response 1 3 v ldoout i ldo =1ma to 150ma 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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 w w w . a n p e c . c o m . t w 1 0 b l o c k d i a g r a m charge control circuit 1.21v uvlo thermal reglation vin 2.5 m a 1.21v 2.9v 1v 0.1v precharge comp mos driver thermal shutdown & current limit vref s h u t d o w n constant current loop amp. constant voltage loop amp. vin batt stat iset ldoin ldoout gnd 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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 w w w . a n p e c . c o m . t w 1 1 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 when usb is present, the input power of ldo is supplied by usb designation description c1, c3, c4 1 m f, 10v, x5r, 0402 murata grm155r61a105k e15 c2 2.2 m f, 6.3v, x5r, 0402 murata grm155r60j225me15 q1 sot - 23, n - channel mosfet anpec apm2300ca q2 sot - 23, p - channel mosfet anpec apm2301ca murata website: www.murat a.com t h e i n p u t p o w e r o f l d o r e g u l a t o r i s s u p p l i e d b y b a t t e r y vin iset stat batt ldoin ldoout gnd 1 10 2 4 6,7 8 3,9 usb/adapter 5v 3.3v li+ battery off on r set :2k to 10k c1 c2 c4 c3 batt chg set 1000 v i = r 10k to 100k q1 led vin iset stat batt ldoin ldoout gnd 1 10 2 4 6,7 8 3,9 3.3v li+ battery off on batt chg set 1000 v i = r 10k to 100k 10k to 100k schottky diode c1 c3 c4 usb/adapter 5v q1 q2 c2 r set :2k to 10k led 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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 w w w . a n p e c . c o m . t w 1 2 f u n c t i o n d e s c r i p t i o n charge cycle when the APL3207 is powered with a battery connected, the ic firstly detects if the cell voltage is ready for full charge current. if the battery voltage is below pre-charge threshold (2.9v typ.), the device supplies 1/10 the pro- grammed charge current. on the contrary, when the bat- tery voltage is over the pre-charge threshold, the device supplies the full charge current, as programmed by r set from the iset pin to the gnd. when the battery voltage approaches the 4.2v termination voltage, the device en- ters constant-voltage mode and the full charge current gradually decreases until the charge current drops to the termination current threshold, which is equal to 1/10 full charge current, and the ic stops charging (see figure 1). 3.0v 4.2v v batt 4.05v i chg 0.1c 1c pre- charge full charge constant voltage mode v batt i chg f i g u r e 1 . t y p i c a l c h a r g i n g p r o f i l e full charge current setting t h e f u l l c h a r g e c u r r e n t i s p r o g r a m m e d b y c o n n e c t i n g a r e s i s t o r f r o m t h e t h e i s e t p i n t o t h e g r o u n d . t h e f u l l c h a r g e c u r r e n t i s 1 0 0 0 t i m e s o f t h e c u r r e n t f l o w i n g o u t o f t h e i s e t p i n a n d c a n b e c a l c u l a t e d b y t h e f o l l o w i n g e q u a t i o n : set set set chg r v k i = where: v set is iset regulation voltage (1v, typcial). k set is the charge current set factor (1000, typical). t h e c h a r g e c u r r e n t s e t f a c t o r a n d t h e i s e t r e g u l a t i o n v o l t - a g e a r e s h o w n i n t h e 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 h e i s e t r e g u l a t i o n v o l t a g e i s r e d u c e d b y t h e t h e r m a l r e g u l a t i o n f u n c t i o n . charge termination detection and recharge c h a r g i n g i s t e r m i n a t e d w h e n i c h g f a l l s t o 1 0 % o f t h e f u l l c h a r g e c u r r e n t s e t b y r s e t a n d t h e c h a r g e r i s i n v o l t a g e m o d e ( v b a t t i s n e a r l y 4 . 2 v ) . t h e c h a r g e t e r m i n a t i o n i s d e t e c t e d b y m o n i t o r i n g t h e i s e t p i n . w h e n t h e i s e t p i n v o l t a g e f a l l s b e l o w 0 . 1 v a n d t a k e s l o n g e r t h a n t t e r m ( 1 m s , t y p i c a l ) , c h a r g i n g i s t e r m i n a t e d . t h e s t a t o u t p u t k e e p s h i g h s t a t e w h e n t h e c h a r g e r o p e r a t e s i n s t a n d b y m o d e . a f t e r c h a r g e t e r m i n a t i o n , t h e b a t t e r y v o l t a g e i s m o n i t o r e d b y t h e a p l 3 2 0 7 c o n t i n u o u s l y . i f t h e b a t t e r y v o l t a g e d r o p s b e l o w 4 . 0 5 v a n d t a k e s l o n g e r t h a n t r e c h a r g e ( 2 m s , t y p i c a l ) , a n e w c h a r g e c y c l e s t a r t s t o r e c h a r g e t h e b a t t e r y . manual shutdown t h e i s e t p i n p r o v i d e s t w o f u n c t i o n s : c o n n e c t i n g t h e r e - s i s t o r r s e t f r o m t h e i s e t p i n t o t h e g n d t o s e t t h e f u l l c h a r g e c u r r e n t ; a n d d i s c o n n e c t i n g t h e r s e t f r o m t h e g n d t o s h u t d o w n t h e c h a r g i n g d e v i c e . o n c e t h e r s e t is disconnected, an internal 2.5 m a current will pull the iset pin high. when the iset pin voltage reaches the 1.21v shutdown threshold voltage, the charging device enters shutdown mode. in shutdown mode, the charging stops, the vin supply current drops to 25 m a and the battery drain current is below 1 m a. reconnecting r s e t t o t h e g n d e n - a b l e s t h e c h a r g e r t o o p e r a t e n o r m a l l y . t h e s t a t o u t p u t i s i n h i g h s t a t e w h e n t h e c h a r g e r i s i n s h u t d o w n m o d e . thermal regulation t h e a p l 3 2 0 7 i s t h e r m a l l y r e g u l a t e d t o k e e p t h e j u n c t i o n t e m p e r a t u r e a t 1 2 0 c . 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 r e a c h e s 1 2 0 c , t h e c h a r g e r d o e s n o t s h u t d o w n b u t r e - d u c e s c h a r g e c u r r e n t t o k e e p t h e j u n c t i o n t e m p e r a t u r e a t 1 2 0 c . t h i s f e a t u r e p r o t e c t s t h e a p l 3 2 0 7 f r o m e x c e s - s i v e t e m p e r a t u r e a n d a l l o w s t h e c h a r g e r t o o p e r a t e w i t h m a x i m u m p o w e r d i s s i p a t i o n b y r e d u c i n g t h e c h a r g e c u r - r e n t a n d o p t i m i z e s t h e b o a r d d e s i g n f o r c o m p a c t s i z e a n d t y p i c a l t h e r m a l c o n d i t i o n s . charge status output (stat) t h e s t a t i s a n o p e n - d r a i n o u t p u t . w h e n t h e c h a r g e r i s i n c h a r g e m o d e , t h e s t a t o u t p u t i s i n p u l l - l o w s t a t e . u n t i l t h e c h a r g e c u r r e n t d r o p s t o t h e t e r m i n a t i o n c u r r e n t t h r e s h o l d , t h e c h a r g i n g s t o p s , a n d t h e s t a t o u t p u t i s i n h i g h i m p e d a n c e s t a t 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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 w w w . a n p e c . c o m . t w 1 3 f u n c t i o n d e s c r i p t i o n ( c o n t . ) charge status output (stat) (cont.) stat output mode v in v batt v set low charge mode v in >v uvlo & v in >v batt + v asd v batt <4.2v 0.1v 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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 w w w . a n p e c . c o m . t w 1 4 i n p u t c a p a c i t o r s the APL3207 requires proper input capacitors to supply surge current during stepping load transients to prevent the input rail from dropping. the 1 m f ceramic capacitors are recommended to place on the input supply pins (vin and vldoin) to the gnd. place the capacitors as close as possible to the input supply pins for well operation. in some start-up conditions, it may necessary to protect the device against a hot plug input voltage. adding a 6v input zener diode between the input supply pins and the gnd clamps the input voltage peak. o u t p u t c a p a c i t o r s a p p l i c a t i o n i n f o r m a t i o n t h e a p l 3 2 0 7 h a s t w o o u t p u t p i n s , w h i c h a r e c h a r g e r o u t p u t p i n b a t t a n d r e g u l a t o r 3 . 3 v o u t p u t p i n l d o o u t . t h e o u t p u t c a p a c i t o r o f c h a r g e r i s r e c o m m e n d e d t o u s e 2 . 2 m f c e r a m i c c a p a c i t o r t o e n s u r e t h e b a t t e r y c h a r g e s t a b i l i t y . t h e o u t p u t c a p a c i t o r o f r e g u l a t o r a l s o c a n u s e c e r a m i c c a p a c i t o r , a n d i t s p r o p e r v a l u e i s b e t w e e n 1 m f a n d 2 . 2 m f , esr must above 10m w . large output capacitor values can reduce noise and improve load-transient response, stability, and psrr. with x5r and x7r dielectrics, 1 m f is sufficient at all operating temperatures. stat pin t h e s t a t p i n c a n b e u s e d t o d r i v e a l e d o r c o m m u n i c a t e w i t h t h e h o s t p r o c e s s o r t o s h o w t h e c h a r g e s t a t u s . w h e n t h e s t a t u s i s d i s p l a y e d b y a l e d , w h i c h h a s a c u r r e n t r a t i n g l e s s t h a n 5 m a , a r e s i s t o r s h o u l d b e s e l e c t e d t o c o n n e c t l e d i n s e r i e s , f o r p r o g r a m m i n g a t t h e d e s i r e d c u r r e n t v a l u e . t h e r e s i s t o r i s c a l c u l a t e d b y t h e f o l l o w i n g e q u a t i o n : led on led in led i v v r - - = w h e n s t a t p i n i s m o n i t o r e d b y a p r o c e s s o r , t h e r e s h o u l d b e a 1 0 k w to 100k w pull-up resistor to connect the stat pin and the supply voltage of the processor. t h e r m a l c o n s i d e r a t i o n t h e m o s t c o m m o n m e a s u r e m e n t o f p a c k a g e t h e r m a l p e r f o r m a n c e i s t h e r m a l r e s i s t a n c e m e a s u r e d f r o m t h e d e v i c e j u n c t i o n t o t h e a i r s u r r o u n d i n g t h e p a ckage sur- face ( q j a ). the q j a c a n b e c a l c u l a t e d b y t h e f o l l o w i n g e q u a t i o n : d a j ja p t t - = q w h e r e : t j = d e v i c e j u n c t i o n t e m p e r a t u r e , m a x i m u m t j = 1 2 0 c t a = a m b i e n t t e m p e r a t u r e p d = d e v i c e p o w e r d i s s i p a t i o n t h e d e v i c e p o w e r d i s s i p a t i o n , p d , i s a f u n c t i o n o f t h e c h a r g e r a t e , t h e l d o o u t p u t c u r r e n t a n d t h e v o l t a g e s d r o p a c r o s s t h e i n t e r n a l f e t s . i t c a n b e c a l c u l a t e d b y t h e f o l l o w i n g e q u a t i o n : ldo ldout lodin chg batt in d i ) v v ( i ) v v ( p - + - = pcb layout consideration connecting the battery to batt as close as possible pro- vides accurate battery voltage sensing. the input and output decoupling capacitors and the programmed re- sistor r set should be placed as close as possible to the device. the high current paths (vin and ldoin pins for input and batt and ldoout pins for output) must be short and wide to minimize voltage drop. 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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 w w w . a n p e c . c o m . t w 1 5 p a c k a g e i n f o r m a t i o n d f n 3 x 3 - 1 0 s y m b o l min. max. 1.00 0.00 0.18 0.30 2.20 2.70 0.05 1.40 a a1 b d d2 e e2 e l millimeters a3 0.20 ref dfn3x3-10 0.30 0.50 1.75 0.008 ref min. max. inches 0.039 0.000 0.007 0.012 0.087 0.106 0.055 0.012 0.020 0.80 0.069 0.031 0.002 0.50 bsc 0.020 bsc 0.20 0.008 k 2.90 3.10 0.114 0.122 2.90 3.10 0.114 0.122 note : 1. followed from jedec mo-229 veed-5. pin 1 corner d2 e 2 l e pin 1 e d a b a1 a3 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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 w w w . a n p e c . c o m . t w 1 6 application a h t1 c d d w e1 f 178.0 ? 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 dfn3x3 - 10 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 3.30 ? 0.20 3.30 ? 0.20 1.30 ? 0.20 (mm) d e v i c e s p e r u n i t package type unit quantity dfn3x3 - 10 tape & reel 3000 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 h t1 a d a e 1 a b w f t p0 od0 b a0 p2 k0 b 0 section b-b section a-a od1 p1 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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 w w w . a n p e c . c o m . t w 1 7 t a p i n g d i r e c t i o n i n f o r m a t i o n d f n 3 x 3 - 1 0 user direction of feed c l a s s i f i c a t i o n p r o f i l 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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 w w w . a n p e c . c o m . t w 1 8 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 preheat & soak temperature min (t smin ) temperature max (t smax ) time (t smin to t smax ) ( t s ) 100 c 150 c 60 - 120 seconds 150 c 200 c 60 - 1 2 0 seconds average ramp - up rate (t smax to t p ) 3 c/second ma x. 3 c/second max. liquidous temperature ( t l ) time at l iquidous (t l ) 183 c 60 - 150 seconds 217 c 60 - 150 seconds peak package body temperature (t p ) * see classification temp in table 1 see classification temp in table 2 time (t p ) ** within 5 c of the spe cified c lassification t emperature ( t c ) 2 0 ** seconds 3 0 ** seconds average r amp - down rate (t p to t smax ) 6 c/second max. 6 c/second max. time 25 c to p eak t emperature 6 minutes max. 8 minutes max. * tolerance for peak profile temperature (t p ) is defined as a supplier minimum and a user maximum. ** tolerance for time at peak profile temperature (t p ) is defined as a supplier minimum and a user maximum. table 2. pb - free process ? classification temperatures (tc) package thickness volume mm 3 <350 volume mm 3 350 - 2000 volume mm 3 >2000 <1.6 mm 260 c 260 c 260 c 1.6 mm ? 2.5 mm 260 c 250 c 245 c 3 2.5 mm 250 c 245 c 245 c table 1. snpb eutectic process ? classification temperatures (tc) package thickness volume mm 3 <350 volume mm 3 3 350 <2.5 mm 235 c 22 0 c 3 2.5 mm 220 c 220 c test item method description solderability jesd - 22, b102 5 sec, 245 c holt jesd - 22, a108 1000 hrs, bias @ t j =125 c pct jesd - 22, a102 168 hrs, 100 % rh, 2atm , 121 c tct jesd - 22, a104 500 cycles, - 65 c~150 c hbm mil - std - 883 - 3015.7 vhbm ? 2kv mm jesd - 22, a1 15 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 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 . 3 - s e p . , 2 0 1 2 a p l 3 2 0 7 w w w . a n p e c . c o m . t w 1 9 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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