Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC With LDO Mode

7/30/2019 Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC With LDO Mode

1/19

1

F E A T U R E S D E S C R I P T I O N

A P P L I C A T I O N S

A P P L I C A T I O N S C H E M A T I C

1 8VDC

GND1 Fm

IN OUT

VBAT

bq24380

1 Fm

ChargingCircuit

6

SYSTEM

AC Adapter

2

VSS

b q 2 4 3 8 0 b q 2 4 3 8 1 b q 2 4 3 8 2

w w w . t i . c o m . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S L U S 8 0 5 B A P R I L 2 0 0 8 R E V I S E D M A R C H 2 0 0 9

O v e r v o l t a g e a n d O v e r c u r r e n t P r o t e c t i o n I C a n d L i + C h a r g e r F r o n t - E n d P r o t e c t i o n I C W i t h L D O M o d e

2 I n p u t O v e r v o l t a g e P r o t e c t i o n T h e b q 2 4 3 8 x f a m i l y a r e c h a r g e r f r o n t - e n d i n t e g r a t e dc i r c u i t s d e s i g n e d t o p r o v i d e p r o t e c t i o n t o L i - i o n A c c u r a t e B a t t e r y O v e r v o l t a g e P r o t e c t i o n b a t t e r i e s f r o m f a i l u r e s o f t h e c h a r g i n g c i r c u i t r y . T h e I C O u t p u t S h o r t - C i r c u i t P r o t e c t i o n c o n t i n u o u s l y m o n i t o r s t h e i n p u t v o l t a g e a n d t h e

S o f t - S t a r t t o P r e v e n t I n r u s h C u r r e n t s b a t t e r y v o l t a g e . T h e d e v i c e o p e r a t e s l i k e a l i n e a r S o f t - S t o p t o P r e v e n t V o l t a g e S p i k e s r e g u l a t o r , m a i n t a i n i n g a 5 . 5 - V ( b q 2 4 3 8 0 ) o r 5 - V

( b q 2 4 3 8 1 , b q 2 4 3 8 2 ) o u t p u t w i t h i n p u t v o l t a g e s u p t o 3 0 - V M a x i m u m I n p u t V o l t a g e t h e I n p u t o v e r v o l t a g e t h r e s h o l d . D u r i n g i n p u t

S u p p o r t s u p t o 1 . 7 - A L o a d C u r r e n t o v e r v o l t a g e c o n d i t i o n s , t h e I C i m m e d i a t e l y t u r n s o f f T h e r m a l S h u t d o w n t h e i n t e r n a l p a s s F E T d i s c o n n e c t i n g t h e c h a r g i n g

c i r c u i t r y f r o m t h e d a m a g i n g i n p u t s o u r c e . A d d i t i o n a l l y , E n a b l e F u n c t i o n i f t h e b a t t e r y v o l t a g e r i s e s t o u n s a f e l e v e l s w h i l e

F a u l t S t a t u s I n d i c a t i o n c h a r g i n g , p o w e r i s r e m o v e d f r o m t h e s y s t e m . T h e I C

S m a l l 2 m m 2 m m 8 - P i n S O N P a c k a g e c h e c k s f o r s h o r t - c i r c u i t o r o v e r l o a d c o n d i t i o n s a t i t s o u t p u t w h e n t u r n i n g t h e p a s s F E T o n , a n d i f i t f i n d s u n s a f e c o n d i t i o n s , i t s w i t c h e s o f f , a n d t h e n r e c h e c k s t h e c o n d i t i o n s . A d d i t i o n a l l y , t h e I C a l s o m o n i t o r s i t s S m a r t P h o n e s , M o b i l e P h o n e s d i e t e m p e r a t u r e a n d s w i t c h e s o f f i f i t e x c e e d s 1 4 0 C .

P D A s W h e n t h e I C i s c o n t r o l l e d b y a p r o c e s s o r , t h e I C M P 3 P l a y e r s p r o v i d e s s t a t u s i n f o r m a t i o n a b o u t f a u l t c o n d i t i o n s t o L o w - P o w e r H a n d h e l d D e v i c e s t h e h o s t .

1

P l e a s e b e a w a r e t h a t a n i m p o r t a n t n o t i c e c o n c e r n i n g a v a i l a b i l i t y , s t a n d a r d w a r r a n t y , a n d u s e i n c r i t i c a l a p p l i c a t i o n s o f T e x a s I n s t r u m e n t s s e m i c o n d u c t o r p r o d u c t s a n d d i s c l a i m e r s t h e r e t o a p p e a r s a t t h e e n d o f t h i s d a t a s h e e t .

2 P o w e r P A D i s a t r a d e m a r k o f T e x a s I n s t r u m e n t s .

P R O D U C T I O N D A T A i n f o r m a t i o n i s c u r r e n t a s o f p u b l i c a t i o n d a t e . C o p y r i g h t 2 0 0 8 2 0 0 9 , T e x a s I n s t r u m e n t s I n c o r p o r a t e d P r o d u c t s c o n f o r m t o s p e c i f i c a t i o n s p e r t h e t e r m s o f t h e T e x a s I n s t r u m e n t s s t a n d a r d w a r r a n t y . P r o d u c t i o n p r o c e s s i n g d o e s n o t

n e c e s s a r i l y i n c l u d e t e s t i n g o f a l l p a r a m e t e r s .
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2/19

A B S O L U T E M A X I M U M R A T I N G S( 1 )

D I S S I P A T I O N R A T I N G S

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

b q 2 4 3 8 0 b q 2 4 3 8 1 b q 2 4 3 8 2S L U S 8 0 5 B A P R I L 2 0 0 8 R E V I S E D M A R C H 2 0 0 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . w w w . t i . c o m

T h e s e d e v i c e s h a v e l i m i t e d b u i l t - i n E S D p r o t e c t i o n . T h e l e a d s s h o u l d b e s h o r t e d t o g e t h e r o r t h e d e v i c e p l a c e d i n c o n d u c t i v e f o a md u r i n g s t o r a g e o r h a n d l i n g t o p r e v e n t e l e c t r o s t a t i c d a m a g e t o t h e M O S g a t e s .

O R D E R I N G I N F O R M A T I O N

D E V I C E V O V P VO ( R E G ) P A C K A G E ( 1 ) M A R K I N G

b q 2 4 3 8 0 6 . 3 V 5 . 5 V 2 m m x 2 m m S O N C F E b q 2 4 3 8 1 7 . 1 V 5 V 2 m m x 2 m m S O N C F W

b q 2 4 3 8 2 1 0 . 5 V 5 V 2 m m x 2 m m S O N O B E

( 1 ) F o r t h e m o s t c u r r e n t p a c k a g e a n d o r d e r i n g i n f o r m a t i o n , s e e t h e P a c k a g e O p t i o n A d d e n d u m a t t h e e n d o f t h i s d o c u m e n t , o r s e e t h e T I W e b s i t e a t w w w . t i . c o m .

o v e r o p e r a t i n g f r e e - a i r t e m p e r a t u r e r a n g e ( u n l e s s o t h e r w i s e n o t e d )

V A L U E U N I T

I N ( w i t h r e s p e c t t o V S S ) 0 . 3 t o 3 0 V

VI I n p u t v o l t a g e O U T ( w i t h r e s p e c t t o V S S ) 0 . 3 t o 1 2 V

F A U L T , C E , V B A T ( w i t h r e s p e c t t o V S S ) 0 . 3 t o 7 V

I O U Tm a x O u t p u t s o u r c e c u r r e n t O U T 2 A

O u t p u t s i n k c u r r e n t F A U L T 1 5 m A

TJ J u n c t i o n t e m p e r a t u r e 4 0 t o 1 5 0 C

Ts t g S t o r a g e t e m p e r a t u r e 6 5 t o 1 5 0 C

( 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 e d 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 . A l l v o l t a g e v a l u e s a r e w i t h r e s p e c t t o t h e n e t w o r k g r o u n d t e r m i n a l u n l e s s o t h e r w i s e n o t e d .

P A C K A G E R J C RJ A

D S G 5 C / W 7 5 C / W

M I N M A X U N I T

VI I N v o l t a g e r a n g e 3 . 3 3 0 V

I O C u r r e n t , O U T p i n 1 . 7 A

TJ J u n c t i o n t e m p e r a t u r e - 4 0 1 2 5 C

2 S ub m i t D o c u m e n t a t i o n F e e d b a c k C o p y r i g h t 2 0 0 8 2 0 0 9 , T e x a s I n s t r u m e n t s I n c o r p o r a t e d

P r o d u c t F o l d e r L i n k ( s ) : b q 2 4 3 8 0 b q 2 4 3 8 1 b q 2 4 3 8 2
http://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://focus.ti.com/docs/prod/folders/print/bq24382.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24382.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24382.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24381.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24380.htmlhttp://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://www.ti.com/http://focus.ti.com/docs/prod/folders/print/bq24382.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24381.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24380.html


3/19

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

b q 2 4 3 8 0 b q 2 4 3 8 1 b q 2 4 3 8 2


O v e r j u n c t i o n t e m p e r a t u r e r a n g e - 4 0 C TJ 1 2 5 C a n d r e c o m m e n d e d s u p p l y v o l t a g e ( u n l e s s o t h e r w i s e n o t e d )

P A R A M E T E R T E S T C O N D I T I O N S M I N T Y P M A X U N I T

I N

U n d e r v o l t a g e l o c k - o u t , i n p u t p o w e r U V L O C E = L O o r H I , V I N : 0 V 3 V 2 . 5 2 . 8 V d e t e c t e d t h r e s h o l d

Vh y s ( U V L O ) H y s t e r e s i s o n U V L O C E = L O o r H I , V I N : 3 V 0 V 2 0 0 3 0 0 m V

C E = L O o r H I . T i m e m e a s u r e d f r o m tD G L ( P G O O D ) D e g l i t c h t i m e , i n p u t p o w e r d e t e c t e d s t a t u s 8 m s VI N 0 V 5 V 1 - s r i s e - t i m e

b q 2 4 3 8 0 2 5 0 C E = L O , n o l o a d o n O U T p i n ,

I D D O p e r a t i n g c u r r e n t b q 2 4 3 8 1 3 0 0 AVI N = 5 Vb q 2 4 3 8 2 3 0 0

I S T D B Y S t a n d b y c u r r e n t C E = H I , V I N = 5 . 5 V 1 0 0 A

I N P U T - T O - O U T P U T C H A R A C T E R I S T I C S

VD O D r o p o u t v o l t a g e I N t o O U T C E = L O , V I N = 5 V , I ( O U T ) = 1 A 2 8 0 m V

I O F F Q 1 o f f - s t a t e l e a k a g e c u r r e n t C E = H I , V I N = 5 . 5 V 1 0 A

I N P U T O V E R V O L T A G E P R O T E C T I O N

b q 2 4 3 8 0 5 . 3 5 . 5 5 . 7

VO ( R E G ) O u t p u t v o l t a g e C E = L O , V I N = 6 V b q 2 4 3 8 1 4 . 8 5 5 . 2 V

b q 2 4 3 8 2 4 . 8 5 5 . 2

b q 2 4 3 8 0 6 . 1 6 . 3 6 . 5

VO V P I n p u t o v e r v o l t a g e p r o t e c t i o n t h r e s h o l d C E = L O , V I N : 5 V 8 V b q 2 4 8 3 1 6 . 8 8 7 . 1 7 . 3 1 V

b q 2 4 3 8 2 1 0 . 1 7 1 0 . 5 1 0 . 8 3

C E = L O o r H I , V I N : 7 V 5 V b q 2 4 3 8 0 2 5 1 1 0

Vh y s ( O V P ) H y s t e r e s i s o n O V P b q 2 4 8 3 1 2 5 1 2 0 m V C E = L O o r H I , V I N : 8 V 5 V

b q 2 4 3 8 2 1 5 0 3 0 0

tP D ( O V P ) ( 1 ) I n p u t O V p r o p a g a t i o n d e l a y V I N : 5 V 1 0 V 2 0 0 n s

C E = L O . T i m e m e a s u r e d f r o m tR E C ( O V P ) R e c o v e r y t i m e f r o m i n p u t o v e r v o l t a g e c o n d i t i o n 8 m s VI N : 7 V 5 V , 1 - s f a l l - t i m e

O U T P U T S H O R T - C I R C U I T P R O T E C T I O N ( o n l y a t s t a r t - u p )

I O ( S C ) S h o r t - c i r c u i t d e t e c t i o n t h r e s h o l d 3 V < V I N < VO V P - Vh y s ( O V P ) 1 . 3 1 . 5 1 . 7 A

tR E C ( S C ) R e t r y i n t e r v a l i f s h o r t - c i r c u i t d e t e c t e d 6 4 m s

B A T T E R Y O V E R V O L T A G E P R O T E C T I O N

B VO V P B a t t e r y o v e r v o l t a g e p r o t e c t i o n t h r e s h o l d V I N > 4 . 5 V , C E = L O 4 . 3 4 . 3 5 4 . 4 V

Vh y s ( B V o v p ) H y s t e r e s i s o n B V ( O V P ) VI N > 4 . 5 V , C E = L O 2 0 0 3 2 0 m V

I ( V B A T ) I n p u t b i a s c u r r e n t o n V B A T p i n T J = 2 5 C 1 0 n A

VI N > 4 . 5 V , C E = L O , T i m e m e a s u r e d f r o m tD G L ( B V o v p ) D e g l i t c h t i m e , b a t t e r y o v e r v o l t a g e d e t e c t e d V V S A T r i s i n g f r o m 4 . 1 V t o 4 . 4 V t o F A U L T 1 7 6 s

g o i n g l o w .

T H E R M A L P R O T E C T I O N

TJ ( O F F ) T h e r m a l s h u t d o w n t e m p e r a t u r e 1 4 0 1 5 0 C

TJ ( O F F - H Y S ) T h e r m a l s h u t d o w n h y s t e r e s i s 2 0 C

L O G I C L E V E L S O N C E

VI L L o g i c L O W i n p u t v o l t a g e 0 0 . 4 V

VI H L o g i c H I G H i n p u t v o l t a g e 1 . 4 V

I I L 1 A

I I H VC E = 1 . 8 V 1 5 A

L O G I C L E V E L S O N F A U L T

VO L O u t p u t L O W v o l t a g e I S I N K = 5 m A 0 . 2 V

I l k g O f f - s t a t e l e a k a g e c u r r e n t , H I - Z V F A U L T = 5 V 1 0 A

( 1 ) N o t t e s t e d . S p e c i f i e d b y d e s i g n

C o p y r i g h t 2 0 0 8 2 0 0 9 , T e x a s I n s t r u m e n t s I n c o r p o r a t e d S u b m i t D o c u m e n t a t i o n F e e d b a c k 3

http://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://focus.ti.com/docs/prod/folders/print/bq24382.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24382.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24382.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24381.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24380.htmlhttp://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://focus.ti.com/docs/prod/folders/print/bq24382.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24381.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24380.html


4/19

D E V I C E I N F O R M A T I O N

IN

VSS

NC

FAULT

OUT

NC

VBAT

CE

bq2438x

1

2

3

4

8

7

6

5


T E R M I N A L F U N C T I O N S

T E R M I N A L I / O D E S C R I P T I O N

N A M E N O .

I N 1 I I n p u t p o w e r , c o n n e c t e d t o e x t e r n a l D C s u p p l y . B y p a s s I N t o V S S w i t h a c e r a m i c c a p a c i t o r ( 1 F m i n i m u m )

V S S 2 G r o u n d t e r m i n a l . C o n n e c t t o t h e t h e r m a l p a d a n d t o t h e g r o u n d r a i l o f t h e c i r c u i t .

N C 3 , 7 D o n o t c o n n e c t t o a n y e x t e r n a l c i r c u i t s . T h e s e p i n s m a y h a v e i n t e r n a l c o n n e c t i o n s u s e d f o r t e s t p u r p o s e s .

O p e n - d r a i n d e v i c e s t a t u s o u t p u t . F A U L T i s p u l l e d t o V S S i n t e r n a l l y w h e n t h e i n p u t p a s s F E T h a s b e e n t u r n e d F A U L T 4 O o f f d u e t o i n p u t o v e r v o l t a g e o r o u t p u t s h o r t - c i r c u i t c o n d i t i o n s , a n o v e r t e m p e r a t u r e c o n d i t i o n , o r b e c a u s e t h e

b a t t e r y v o l t a g e i s o u t s i d e s a f e l i m i t s . F A U L T i s h i g h i m p e d a n c e d u r i n g n o r m a l o p e r a t i o n .

A c t i v e - l o w c h i p e n a b l e i n p u t . C o n n e c t C E = H I t o t u r n t h e i n p u t p a s s F E T o f f . C o n n e c t C E = L O W t o t u r n t h e C E 5 I

i n t e r n a l p a s s F E T o n a n d c o n n e c t t h e i n p u t t o t h e c h a r g i n g c i r c u i t r y . C E i s I n t e r n a l l y p u l l e d d o w n , ~ 2 0 0 k .

V B A T 6 I B a t t e r y v o l t a g e s e n s e i n p u t . C o n n e c t e d t o p a c k p o s i t i v e t e r m i n a l t h r o u g h a 1 0 0 - k r e s i s t o r .

O U T 8 O O u t p u t t e r m i n a l t o t h e c h a r g i n g s y s t e m . B y p a s s O U T t o V S S w i t h a c e r a m i c c a p a c i t o r ( 1 F m i n i m u m )

T h e t h e r m a l p a d i s e l e c t r i c a l l y c o n n e c t e d t o V S S i n t e r n a l l y . T h e t h e r m a l p a d m u s t b e c o n n e c t e d t o t h e s a m eT h e r m a l P A D p o t e n t i a l a s t h e V S S p i n o n t h e p r i n t e d c i r c u i t b o a r d . D o n o t u s e t h e t h e r m a l p a d a s t h e p r i m a r y g r o u n d i n p u t

f o r t h e d e v i c e . V S S p i n m u s t b e c o n n e c t e d t o g r o u n d a t a l l t i m e s .




5/19

T Y P I C A L C H A R A C T E R I S T I C S

V

2V/div

FAULT

V

500mV/div

OUT

t-Time-2ms/div

V

5V/div

INV

2V/div

IN

V

2V/div

OUT

I

500mA/div

OUT

R =6 .6OUT

W

t-Time-2ms/div

V

2V/div

IN

V

2V/div

OUT

V

2V/div

FAULT

t-Time-200ms/div

V

2V/divIN

V

2V/divOUT

V

2V/divFAULT

V =6Vto9VstepIN

t-Time-5 s/divm

V

5V/divIN

V2V/div

OUT

V =10Vto6VstepIN

V

2V/divFAULT

t-Time-2ms/div

V

5V/div

IN

V

5V/div

OUT

I

1 A/div

OUT

V2V/div

FAULT

t-Time-5ms/div

b q 2 4 3 8 0 b q 2 4 3 8 1 b q 2 4 3 8 2


N O R M A L P O W E R - O N S H O W I N G S O F T - S T A R T ( b q 2 4 3 8 0 ) O V P a t P O W E R - O N

F i g u r e 1 . F i g u r e 2 .

O V P R E S P O N S E f o r I N P U T S T E P ( b q 2 4 3 8 0 ) S L O W I N P U T R A M P I N T O O V P E V E N T ( b q 2 4 3 8 0 )

F i g u r e 3 . F i g u r e 4 .

R E C O V E R Y F R O M O V P ( b q 2 4 3 8 0 ) P O W E R U P I N T O S H O R T C I R C U I T

F i g u r e 5 . F i g u r e 6 .




6/19

V

2V/divOUT

V =3.8Vto4.5VstepBAT

V

2V/divFAULT

t-Time-50 s/divm

V

1V/div

BAT

V

5V/div

IN

V

500mV/div

OUT

I

1 A/div

OUT

t-Time-20 s/divm

2.40

2.45

2.50

2.55

2.60

2.65

2.70

2.75

-40 -15 10 35 60 85 110 135

T -Free-AirTemperature-CA

U

VLO

-Un

dervo

ltage

Loc

kou

t-

V V RisingIN

V FallingIN

50

90

130

170

210

250

-40 -15 10 35 60 85 110 135

DROPOUTVOLTAGE

-m

V

T -Free-AirTemperature-CA

I =1 AOUT

V = 5 VIN

V = 4 VIN

6.0

6.4

6.8

7.0

7.2

7.4

40 15 10 35 60 85 110 135

V

Thres

hol

d

V

OVP

T Free-AirTemperature CA

6.6

6.2

V RisingIN

V RisingIN

V FallingIN

bq24380

bq24381

V FallingIN

4.90

5.00

5.10

5.20

5.30

5.40

5.50

5.60

40 15 10 35 60 85 110 135

V

Ou

tpu

tVo

ltage

V

OUT(REG)

T Free-AirTemperature CA

bq24380

bq24381


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 i n u e d )

S O F T - S T O P D U R I N G O C P E V E N T ( b q 2 4 3 8 0 ) B A T T E R Y O V P E V E N T ( b q 2 4 3 8 0 )

F i g u r e 7 . F i g u r e 8 .

U V L O D R O P O U T V O L T A G E v s v s

F R E E - A I R T E M P E R A T U R E F R E E - A I R T E M P E R A T U R E

F i g u r e 9 . F i g u r e 1 0 .

O U T P U T V O L T A G E R E G U L A T I O N , V O ( R E G ) O V P T H R E S H O L D v s v s


F i g u r e 1 1 . F i g u r e 1 2 .


http://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://focus.ti.com/docs/prod/folders/print/bq24382.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24382.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24382.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24381.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24380.htmlhttp://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://focus.ti.com/docs/prod/folders/print/bq24382.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24381.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24380.html


7/19

4.05

4.10

4.15

4.20

4.25

4.30

4.35

4.40

-40 -15 10 35 60 85 110 135

V

-Thres

ho

ld-

V

BOVP

T -Fr ee-AirTemperature-CA

V Ri si ngBAT

V F allingBAT

0

5

10

15

20

25

-40 -15 10 35 60 85 110 135

I

-BatLea

kage

Current-n

A

Ikg

T -Fr ee-AirTemperature-CA

0

100

200

300

400

500

600

700

800

900

1000

0 5 10 15 20 25 30

V InputVoltage VIN

I

SupplyCurrent

A

CC

m

ICEnabled

ICDisabled

VO(REG)

0

100

200

300

400

500

600

700

800

900

1000

0 5 10 15 20 25 30

V InputVoltage VIN

I

SupplyCurrent

A

CC

m

VO(REG)

ICEnabled

ICDisabled

b q 2 4 3 8 0 b q 2 4 3 8 1 b q 2 4 3 8 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 i n u e d )

O V P T H R E S H O L D , V B O V P L E A K A G E C U R R E N T ( V B A T P I N ) v s v s


F i g u r e 1 3 . F i g u r e 1 4 .

S U P P L Y C U R R E N T S U P P L Y C U R R E N T v s v s

I N P U T V O L T A G E ( b q 2 4 3 8 0 ) I N P U T V O L T A G E ( b q 2 4 3 8 1 )

F i g u r e 1 5 . F i g u r e 1 6 .




8/19

1 8VDC

GND1 Fm

IN OUT

VBAT

bq24380

1 FmCharging

Circuit

6

SYSTEM

AC Adapter

2

VSS

4

5

FAULT

CE

RPU

100kW

47kW

47kWRFAULT

47kWRCE

RBAT

1. Short-circuitduringstart-up

2. Normalstart-upcondition

3. Batteryovervoltageevent

4. VUVLO < VIN < V OREG -- VOUT tracksVIN5. Inputovervoltageevent

6. InputbelowUVLO

7. High-currenteventduringnormaloperation

tCHK(SC) tSStarttSStop

tREC(SC)tSStart tDGL(BVOVP) tPD(OVP)tDGL(PGOOD)tREC(OVP)

5

4 2 46

7

22

1

3

Input

Voltage

Output

Voltage

CE

UVLO

FAULT

Output

Current

Battery

Voltage

VOVP

VOVP hys(OVP)-V

VO(REG)

VO(REG)

IO(SC)

BV

BV -V(OVP)

(OVP) hys(BVOVP)


F i g u r e 1 7 . 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

F i g u r e 1 8 . T i m i n g D i a g r a m


http://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://focus.ti.com/docs/prod/folders/print/bq24382.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24382.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24382.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24381.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24380.htmlhttp://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLUS805B&partnum=bq24380http://focus.ti.com/docs/prod/folders/print/bq24382.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24381.htmlhttp://focus.ti.com/docs/prod/folders/print/bq24380.html


9/19

D E T A I L E D F U N C T I O N A L D E S C R I P T I O N

P O W E R D O W N

P O W E R O N R E S E T

D E T A I L E D F U N C T I O N A L D E S C R I P T I O N

I n p u t O v e r v o l t a g e P r o t e c t i o n

B a t t e r y O v e r v o l t a g e 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

b q 2 4 3 8 0 b q 2 4 3 8 1 b q 2 4 3 8 2


T h e b q 2 4 3 8 x i s a h i g h l y i n t e g r a t e d c i r c u i t d e s i g n e d t o p r o v i d e p r o t e c t i o n t o L i - i o n b a t t e r i e s f r o m f a i l u r e s o f t h ec h a r g i n g c i r c u i t a n d t h e i n p u t s o u r c e . T h e I C c o n t i n u o u s l y m o n i t o r s t h e i n p u t v o l t a g e a n d t h e b a t t e r y v o l t a g e . T h e d e v i c e o p e r a t e s l i k e a l i n e a r r e g u l a t o r , m a i n t a i n i n g a 5 . 5 - V ( b q 2 4 3 8 0 ) o r 5 - V ( b q 2 4 3 8 1 , b q 2 4 3 8 2 ) o u t p u t w i t h i n p u t v o l t a g e s u p t o t h e i n p u t o v e r v o l t a g e t h r e s h o l d ( V O V P ) . I f t h e i n p u t v o l t a g e e x c e e d s V O V P , t h e I C s h u t s o f f t h e p a s s F E T a n d d i s c o n n e c t s t h e s y s t e m f r o m i n p u t p o w e r . A d d i t i o n a l l y , i f t h e b a t t e r y v o l t a g e r i s e s a b o v e 4 . 3 5 V ,

t h e I C s w i t c h e s o f f t h e p a s s F E T , r e m o v i n g t h e p o w e r f r o m t h e s y s t e m u n t i l t h e b a t t e r y v o l t a g e f a l l s t o s a f e l e v e l s . T h e I C a l s o m o n i t o r s i t s d i e t e m p e r a t u r e a n d s w i t c h e s t h e p a s s F E T o f f i f i t e x c e e d s 1 4 0 C .

T h e I C c a n b e c o n t r o l l e d b y a p r o c e s s o r , a n d a l s o p r o v i d e s s t a t u s i n f o r m a t i o n a b o u t f a u l t c o n d i t i o n s t o t h e h o s t .

T h e d e v i c e r e m a i n s i n p o w e r - d o w n m o d e w h e n t h e i n p u t vo l t a g e a t t h e I N p i n i s b e l o w t h e u n d e r v o l t a g e t h r e s h o l d ( U V L O ) o f 2 . 8 V . T h e F E T c o n n e c t e d b e t w e e n t h e I N a n d O U T p i n s i s o f f , a n d t h e s t a t u s o u t p u t , F A U L T , i s s e t t o H I - Z .

T h e d e v i c e r e s e t s w h e n t h e i n p u t v o l t a g e a t t h e I N p i n e x c e e d s t h e U V L O t h r e s h o l d . D u r i n g p o w e r - o n r e s e t , t h eI C w a i t s f o r d u r a t i o n t D G L ( P G O O D ) f o r t h e i n p u t v o l t a g e t o s t a b i l i z e . I f , a f t e r t D G L ( P G O O D ) , t h e i n p u t v o l t a g e a n d b a t t e r y

v o l t a g e a r e w i t h i n o p e r a t i o n l i m i t s , t h e p a s s F E T i s t u r n e d O N . T h e I C h a s a s o f t - s t a r t f e a t u r e t o c o n t r o l t h e i n r u s h c u r r e n t . T h e s o f t - s t a r t m i n i m i z e s t h e r i n g i n g a t t h e i n p u t d u e t o t h e r e s o n a n t c i r c u i t f o r m e d b y t h e p a r a s i t i c i n d u c t a n c e o f t h e a d a p t e r c a b l e a n d t h e i n p u t b y p a s s c a p a c i t o r . D u r i n g t h e s o f t - s t a r t t i m e , t S S t a r t , t h e c u r r e n t l i m i t i s s t e p p e d u p i n 8 e q u a l s t e p s e v e r y 6 2 5 s . E a c h s t e p i s 1 / 8 o f t h e I O ( S C ) . A f t e r t h e s o f t - s t a r t s e q u e n c e i s o v e r , t h e I C s a m p l e s t h e l o a d c u r r e n t . I f t h e l o a d c u r r e n t e x c e e d s I O ( S C ) , t h e I C i n i t i a t e s s h o r t c i r c u i t p r o t e c t i o n . S e e t h e S t a r t u p S h o r t - C i r c u i t P r o t e c t i o n s e c t i o n f o r d e t a i l s . I f n o o v e r c u r r e n t e v e n t i s m e a s u r e d , t h e c u r r e n t m o n i t o r i n g c i r c u i t r y i s d i s a b l e d f o r n o r m a l o p e r a t i o n .

I n t h e e v e n t a s h o r t - c i r c u i t i s d e t e c t e d a t p o w e r - o n , t o p r e v e n t t h e i n p u t v o l t a g e f r o m s p i k i n g u p w h e n t h e p a s s F E T i s s w i t c h e d o f f ( d u e t o t h e i n d u c t a n c e o f t h e i n p u t c a b l e ) , T h e p a s s F E T i s t u r n e d o f f b y g r a d u a l l y r e d u c i n g i t s g a t e - d r i v e , r e s u l t i n g i n a s o f t - s t o p ( tS S t o p ) .

T h e d e v i c e c o n t i n u o u s l y m o n i t o r s t h e i n p u t v o l t a g e a n d t h e b a t t e r y v o l t a g e a s d e s c r i b e d i n d e t a i l b e l o w :

T h e O U T o u t p u t o f t h e b q 2 4 3 8 x o p e r a t e s s i m i l a r t o a l i n e a r r e g u l a t o r . W h i l e t h e i n p u t v o l t a g e i s l e s s t h a nVO ( R E G ) , a n d a b o v e t h e U V L O , t h e o u t p u t v o l t a g e t r a c k s t h e i n p u t v o l t a g e ( l e s s t h e d r o p c a u s e d b y R D S ( o n ) o f t h e p a s s F E T ) . W h e n t h e i n p u t v o l t a g e i s g r e a t e r t h a n V O ( R E G ) ( p l u s t h e R D S ( o n ) d r o p ) a n d l e s s t h a n V O V P , t h e o u t p u t v o l t a g e i s r e g u l a t e d t o V O ( R E G ) . VO ( R E G ) i s 5 . 5 V f o r t h e b q 2 4 3 8 0 , a n d 5 V f o r t h e b q 2 4 3 8 1 a n d b q 2 4 3 8 2 . I f t h e i n p u t v o l t a g e i s i n c r e a s e d a b o v e V O V P , t h e i n t e r n a l p a s s F E T i s t u r n e d o f f , r e m o v i n g p o w e r f r o m t h e c h a r g i n g c i r c u i t r y c o n n e c t e d t o O U T . T h e F A U L T o u t p u t i s t h e n a s s e r t e d l o w . W h e n t h e i n p u t v o l t a g e d r o p s b e l o w V O V P Vh y s ( O V P ) ( b u t i s s t i l l a b o v e U V L O ) , t h e p a s s F E T i s t u r n e d o n a f t e r a d e g l i t c h t i m e o f t R E C ( O V P ) . T h e d e g l i t c h t i m e e n s u r e s t h a t t h e i n p u t s u p p l y h a s s t a b i l i z e d . T h e c o n d i t i o n 5 i n F i g u r e 1 8 i l l u s t r a t e s a n i n p u t o v e r v o l t a g e e v e n t .

T h e b a t t e r y o v e r v o l t a g e t h r e s h o l d B VO V P i s i n t e r n a l l y s e t t o 4 . 3 5 V f o r t h e b q 2 4 3 8 x . C o n d i t i o n 3 i n F i g u r e 1 8 i l l u s t r a t e s a b a t t e r y o v e r v o l t a g e e v e n t . I f t h e b a t t e r y v o l t a g e e x c e e d s t h e B V O V P t h r e s h o l d f o r l o n g e r t h a n tD G L ( B V o v p ) , t h e p a s s F E T i s t u r n e d o f f ( u s i n g s o f t - s t o p ) , a n d F A U L T i s a s s e r t e d l o w . T h e p a s s F E T i s t u r n e d o n ( u s i n g t h e s o f t - s t a r t s e q u e n c e ) o n c e t h e b a t t e r y v o l t a g e d r o p s t o B V O V P Vh y s ( B V o v p ) .

I f t h e j u n c t i o n t e m p e r a t u r e o f t h e d e v i c e e x c e e d s T J ( O F F ) , t h e p a s s F E T i s t u r n e d o f f , a n d t h e F A U L T o u t p u t i s a s s e r t e d l o w . T h e F E T i s t u r n e d o n 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 f a l l s b e l o w T J ( O F F ) TJ ( O F F - H Y S ) .




10/19

S t a r t - U p S h o r t - C i r c u i t P r o t e c t i o n

E n a b l e F u n c t i o n

F a u l t I n d i c a t i o n


T h e b q 2 4 3 8 x f e a t u r e s o v e r l o a d c u r r e n t p r o t e c t i o n d u r i n g s t a r t - u p . T h e c o n d i t i o n 1 i n F i g u r e 1 8 i l l u s t r a t e s s t a r t - u p i n t o a n o v e r l o a d c o n d i t i o n . I f a f t e r t h e e i g h t s o f t - s t a r t s t e p s a r e c o m p l e t e , a n d t h e c u r r e n t l i m i t i s e x c e e d e d , t h e I C i n i t i a t e s a s h o r t - c i r c u i t c h e c k t i m e r ( t C H K ( S C ) ) . D u r i n g t h i s c h e c k , t h e c u r r e n t i s c l a m p e d t o I O ( S C ) . I f t h e 5 - m s tC H K ( S C ) t i m e r e x p i r e s a n d t h e c u r r e n t r e m a i n s c l a m p e d b y t h e c u r r e n t l i m i t , t h e i n t e r n a l p a s s F E T i s t u r n e d o f f u s i n g t h e s o f t - s t o p m e t h o d , F A U L T i s p u l l e d l o w a n d t h e t R E C ( S C ) t i m e r b e g i n s . O n c e t h e t R E C ( S C ) t i m e r e x p i r e s ,

F A U L T b e c o m e s h i g h i m p e d a n c e a n d t h e s o f t - s t a r t s e q u e n c e r e s t a r t s . T h e d e v i c e r e p e a t s t h e s t a r t / f a i l s e q u e n c e u n t i l t h e o v e r l o a d c o n d i t i o n i s r e m o v e d . O n c e t h e o v e r l o a d c o n d i t i o n i s r e m o v e d , t h e c u r r e n t l i m i t c i r c u i t r y i s d i s a b l e d a n d t h e d e v i c e e n t e r s n o r m a l o p e r a t i o n . A d d i t i o n a l l y , i f t h e c u r r e n t i s n o t l i m i t e d a f t e r t h e c o m p l e t i o n o f t h e s o f t - s t a r t s e q u e n c e , t h e t C H K ( S C ) t i m e r d o e s n o t s t a r t a n d t h e c u r r e n t l i m i t c i r c u i t r y i s d i s a b l e d f o r n o r m a l o p e r a t i o n .

T h e I C h a s a n e n a b l e p i n w h i c h i s u s e d t o e n a b l e a n d d i s a b l e t h e d e v i c e . C o n n e c t t h e C E p i n h i g h t o t u r n o f f t h ei n t e r n a l p a s s F E T . C o n n e c t t h e C E p i n l o w t o t u r n o n t h e i n t e r n a l p a s s F E T a n d e n t e r t h e s t a r t - u p r o u t i n e . T h e C E p i n h a s a n i n t e r n a l p u l l d o w n r e s i s t o r a n d c a n b e l e f t u n c o n n e c t e d . T h e F A U L T p i n i s h i g h i m p e d a n c e w h e n t h e C E p i n i s h i g h .

T h e F A U L T p i n i s a n a c t i v e - l o w , o p e n - d r a i n o u t p u t . I t i s i n a h i g h - i m p e d a n c e s t a t e w h e n o p e r a t i n g c o n d i t i o n s a r es a f e , o r w h e n t h e d e v i c e i s d i s a b l e d b y s e t t i n g C E h i g h . W i t h C E l o w , t h e F A U L T p i n g o e s l o w w h e n e v e r a n y o f t h e s e e v e n t s o c c u r s :

1 . O u t p u t s h o r t - c i r c u i t a t p o w e r - o n

2 . I n p u t o v e r v o l t a g e

3 . B a t t e r y o v e r v o l t a g e

4 . I C o v e r t e m p e r a t u r e

S e e F i g u r e 1 8 f o r a n e x a m p l e o f F A U L T c o n d i t i o n s d u r i n g t h e s e e v e n t s . C o n n e c t t h e F A U L T p i n t o t h e d e s i r e d l o g i c l e v e l v o l t a g e r a i l t h r o u g h a r e s i s t o r b e t w e e n 1 k a n d 5 0 k .

1 0 S ub m i t D o c u m e n t a t i o n F e e d b a c k C o p y r i g h t 2 0 0 8 2 0 0 9 , T e x a s I n s t r u m e n t s I n c o r p o r a t e d



11/19

A P P L I C A T I O N I N F O R M A T I O N

S e l e c t i o n o f R ( B A T )

S e l e c t i o n o f R ( C E )

S e l e c t i o n o f I n p u t a n d O u t p u t B y p a s s C a p a c i t o r s

P C B L a y o u t G u i d e l i n e s

b q 2 4 3 8 0 b q 2 4 3 8 1 b q 2 4 3 8 2


I t i s r e c o m m e n d e d t h a t t h e b a t t e r y n o t b e t i e d d i r e c t l y t o t h e V B A T p i n o f t h e d e v i c e , a s u n d e r s o m e f a i l u r e m o d e s o f t h e I C , t h e v o l t a g e a t t h e I N p i n m a y a p p e a r o n t h e V B A T p i n . T h i s v o l t a g e c a n b e a s h i g h a s 3 0 V , a n d a p p l y i n g 3 0 V t o t h e b a t t e r y m a y c a u s e f a i l u r e o f t h e d e v i c e a n d c a n b e h a z a r d o u s . C o n n e c t i n g t h e V B A T

p i n t h r o u g h R ( B A T ) p r e v e n t s a l a r g e c u r r e n t f r o m f l o w i n g i n t o t h e b a t t e r y i n t h e e v e n t o f f a i l u r e . F o r s a f e t y , R ( B A T ) m u s t h a v e a h i g h v a l u e . T h e p r o b l e m w i t h a l a r g e R ( B A T ) i s t h a t t h e v o l t a g e d r o p s a c r o s s t h e r e s i s t o r b e c a u s e o f t h e V B A T b i a s c u r r e n t , I ( V B A T ) , w h i c h c a u s e s a n e r r o r i n t h e B V O V P t h r e s h o l d . T h i s e r r o r i s o v e r a n d a b o v e t h e t o l e r a n c e o n t h e n o m i n a l 4 . 3 5 - V B V O V P t h r e s h o l d .

C h o o s i n g R ( B A T ) i n t h e r a n g e o f 1 0 0 k t o 4 7 0 k i s a g o o d c o m p r o m i s e . I f t h e I C f a i l s w i t h R ( B A T ) e q u a l t o 1 0 0 k, t h e m a x i m u m c u r r e n t f l o w i n g i n t o t h e b a t t e r y w o u l d b e ( 3 0 V 3 V ) 1 0 0 k = 2 4 6 A , w h i c h i s l o w e n o u g h t o b e a b s o r b e d b y t h e b i a s c u r r e n t s o f t h e s y s t e m c o m p o n e n t s . R ( B A T ) e q u a l t o 1 0 0 k r e s u l t s i n a w o r s t - c a s e v o l t a g e d r o p o f R ( B A T ) I ( V B A T ) 1 m V . T h i s i s n e g l i g i b l e c o m p a r e d t o t h e i n t e r n a l t o l e r a n c e o f 5 0 m V o n t h e B VO V P t h r e s h o l d .

I f t h e B a t - O V P f u n c t i o n i s n o t r e q u i r e d , t h e V B A T p i n m u s t b e c o n n e c t e d t o V S S .

T h e C E p i n c a n b e u s e d t o e n a b l e a n d d i s a b l e t h e I C . I f h o s t c o n t r o l i s n o t r e q u i r e d , t h e C E p i n c a n b e t i e d t og r o u n d o r l e f t u n c o n n e c t e d , p e r m a n e n t l y e n a b l i n g t h e d e v i c e .

I n a p p l i c a t i o n s w h e r e e x t e r n a l c o n t r o l i s r e q u i r e d , t h e C E p i n c a n b e c o n t r o l l e d b y a h o s t p r o c e s s o r . A s w i t h t h e V B A T p i n ( s e e p r e v i o u s d i s c u s s i o n ) , t h e C E p i n m u s t b e c o n n e c t e d t o t h e h o s t G P I O p i n t h r o u g h a s l a r g e a r e s i s t o r a s p o s s i b l e . T h e l i m i t a t i o n o n t h e r e s i s t o r v a l u e i s t h a t t h e m i n i m u m V O H o f t h e h o s t G P I O p i n l e s s t h e d r o p a c r o s s t h e r e s i s t o r m u s t b e g r e a t e r t h a n V I H o f t h e b q 2 4 3 0 x C E p i n . T h e d r o p a c r o s s t h e r e s i s t o r i s g i v e n b y R( C E ) I I H.

T h e i n p u t c a p a c i t o r CI N i n F i g u r e 1 7 i s f o r d e c o u p l i n g a n d s e r v e s a n i m p o r t a n t p u r p o s e . W h e n e v e r a s t e p c h a n g e d o w n w a r d s i n t h e s y s t e m l o a d c u r r e n t o c c u r s , t h e i n d u c t a n c e o f t h e i n p u t c a b l e c a u s e s t h e i n p u t v o l t a g e t o s p i k e u p . C I N p r e v e n t s t h e i n p u t v o l t a g e f r o m o v e r s h o o t i n g t o d a n g e r o u s l e v e l s . I t i s r e c o m m e n d e d t h a t a c e r a m i c c a p a c i t o r o f a t l e a s t 1 F b e u s e d a t t h e i n p u t o f t h e d e v i c e . I t m u s t b e l o c a t e d i n c l o s e p r o x i m i t y t o t h e I N p i n .

CO U T i n F i g u r e 1 7 i s a l s o i m p o r t a n t . D u r i n g a n o v e r v o l t a g e t r a n s i e n t , t h i s c a p a c i t a n c e l i m i t s t h e o u t p u t o v e r s h o o t u n t i l t h e p o w e r F E T i s t u r n e d o f f b y t h e o v e r v o l t a g e p r o t e c t i o n c i r c u i t r y . C O U T m u s t b e a c e r a m i c c a p a c i t o r o f a t l e a s t 1 F , l o c a t e d c l o s e t o t h e O U T p i n . C O U T a l s o s e r v e s a s t h e i n p u t d e c o u p l i n g c a p a c i t o r f o r t h e c h a r g i n g c i r c u i t d o w n s t r e a m o f t h e p r o t e c t i o n I C .

1 . T h i s d e v i c e i s a p r o t e c t i o n d e v i c e a n d i s m e a n t t o p r o t e c t d o w n - s t r e a m c i r c u i t r y f r o m h a z a r d o u s v o l t a g e s . P o t e n t i a l l y , h i g h v o l t a g e s m a y b e a p p l i e d t o t h i s I C . I t h a s t o b e e n s u r e d t h a t t h e e d g e - t o - e d g e c l e a r a n c e s o f P C B t r a c e s s a t i s f y t h e d e s i g n r u l e s f o r t h e m a x i m u m v o l t a g e s e x p e c t e d t o b e s e e n i n t h e s y s t e m .

2 . T h e d e v i c e u s e s S O N p a c k a g e s w i t h a P o w e r P A D . F o r g o o d t h e r m a l p e r f o r m a n c e , t h e P o w e r P A D m u s t b e t h e r m a l l y c o u p l e d w i t h t h e P C B g r o u n d p l a n e . I n m o s t a p p l i c a t i o n s , t h i s r e q u i r e s a c o p p e r p a d d i r e c t l y u n d e r t h e I C . T h i s c o p p e r p a d s h o u l d b e c o n n e c t e d t o t h e g r o u n d p l a n e w i t h a n a r r a y o f t h e r m a l v i a s .

3 . CI N a n d C O U T s h o u l d b e l o c a t e d c l o s e t o t h e I C . O t h e r c o m p o n e n t s l i k e R ( B A T ) s h o u l d a l s o b e l o c a t e d c l o s e t o t h e I C .

C o p y r i g h t 2 0 0 8 2 0 0 9 , T e x a s I n s t r u m e n t s I n c o r p o r a t e d S u b m i t D o c u m e n t a t i o n F e e d b a c k 1 1



12/19

PACKAGE OPTION ADDENDUM

www.ti.com 11-Apr-2013

Addendum-Page 1

PACKAGING INFORMATION

Orderable Device Status

(1)

Package Type PackageDrawing

Pins PackageQty

Eco Plan

(2)

Lead/Ball Finish MSL Peak Temp

(3)

Op Temp (C) Top-Side Markings

(4)

Sampl

BQ24380DSGR ACTIVE WSON DSG 8 3000 Green (RoHS

& no Sb/Br)

CU NIPDAU Level-2-260C-1 YEAR -40 to 125 CFE

BQ24380DSGRG4 ACTIVE WSON DSG 8 3000 Green (RoHS

& no Sb/Br)


BQ24380DSGT ACTIVE WSON DSG 8 250 Green (RoHS

& no Sb/Br)


BQ24380DSGTG4 ACTIVE WSON DSG 8 250 Green (RoHS

& no Sb/Br)



& no Sb/Br)

CU NIPDAU Level-2-260C-1 YEAR -40 to 125 CFW

BQ24381DSGRG4 ACTIVE WSON DSG 8 3000 Green (RoHS

& no Sb/Br)



& no Sb/Br)


BQ24381DSGTG4 ACTIVE WSON DSG 8 250 Green (RoHS

& no Sb/Br)



& no Sb/Br)

CU NIPDAU Level-2-260C-1 YEAR -40 to 125 OBE


& no Sb/Br)

CU NIPDAU Level-2-260C-1 YEAR -40 to 125 OBE

(1)

The marketing status values are defined as follows:ACTIVE: Product device recommended for new designs.LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.PREVIEW: Device has been announced but is not in production. Samples may or may not be available.OBSOLETE: TI has discontinued the production of the device.

(2)

Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontentfor the latest availabilityinformation and additional product content details.TBD: The Pb-Free/Green conversion plan has not been defined.Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement thatlead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used betweenthe die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weightin homogeneous material)
http://www.ti.com/productcontenthttp://www.ti.com/product/BQ24382?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/BQ24382?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/BQ24381?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/BQ24381?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/BQ24381?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/BQ24381?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/BQ24380?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/BQ24380?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/BQ24380?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/BQ24380?CMP=conv-poasamples#samplebuy


13/19

PACKAGE OPTION ADDENDUM

www.ti.com 11-Apr-2013

Addendum-Page 2

(3)

MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.

(4)

Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is acontinuation of the previous line and the two combined represent the entire Top-Side Marking for that device.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on informationprovided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken andcontinues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.

TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.


14/19

TAPE AND REEL INFORMATION

*All dimensions are nominal

Device PackageType

PackageDrawing

Pins SPQ ReelDiameter

(mm)

ReelWidth

W1 (mm)

A0(mm)

B0(mm)

K0(mm)

P1(mm)

W(mm)

Pin1Quadrant

BQ24380DSGR WSON DSG 8 3000 179.0 8.4 2.2 2.2 1.2 4.0 8.0 Q2

BQ24380DSGT WSON DSG 8 250 179.0 8.4 2.2 2.2 1.2 4.0 8.0 Q2

BQ24381DSGR WSON DSG 8 3000 179.0 8.4 2.2 2.2 1.2 4.0 8.0 Q2

BQ24381DSGT WSON DSG 8 250 179.0 8.4 2.2 2.2 1.2 4.0 8.0 Q2

BQ24382DSGR WSON DSG 8 3000 179.0 8.4 2.2 2.2 1.2 4.0 8.0 Q2

BQ24382DSGT WSON DSG 8 250 179.0 8.4 2.2 2.2 1.2 4.0 8.0 Q2

PACKAGE MATERIALS INFORMATION

www.ti.com 4-Sep-2010

Pack Materials-Page 1


15/19

*All dimensions are nominal

Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)

BQ24380DSGR WSON DSG 8 3000 195.0 200.0 45.0

BQ24380DSGT WSON DSG 8 250 195.0 200.0 45.0

BQ24381DSGR WSON DSG 8 3000 195.0 200.0 45.0

BQ24381DSGT WSON DSG 8 250 195.0 200.0 45.0

BQ24382DSGR WSON DSG 8 3000 195.0 200.0 45.0

BQ24382DSGT WSON DSG 8 250 195.0 200.0 45.0

PACKAGE MATERIALS INFORMATION

www.ti.com 4-Sep-2010

Pack Materials-Page 2


16/19


17/19
http://www.ti.com/lit/slua271


18/19
http://www.ti.com/lit/slua271


19/19

IMPORTANT NOTICE

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Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC With LDO Mode

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Transcript of Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC With LDO Mode