BQ24195 datasheet(4/41 Pages) TI

Part #	BQ24195

Description	I2C Controlled 2.5A / 4.5A Single Cell USB/Adapter Charger With 5.1V at 1A / 5.1V at 2.1A Synchronous Boost Operation

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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4 / 41 page

STAT

SCL

SDA

FBO

CONVERTER

CONTROL

PGND

REGN

BTST

REGN

TSHUT

T

SHUT

IC T

J

TS1

REGN

LDO

bq24195L

bq24195

PMID

Q1

VBUS

Q3

Q2

SW

Q4

SYS

BAT

CHARGE

CONTROL

STATE

MACHINE

I2C

Interface

INT

I

INDPM

I

CHG_REG

V

SYSMIN

V

BAT_REG

IC T

J

T

REG

BATLOWV

BAT

2.8V

SUSPEND

RECHRG

BAT

4.1V

REFRESH

4.2V

V

(BTST-SW)

UCP

100mA

I(Q3)

BATOVP

104%xV

BAT_REG

BAT

V

INDPM

D+

D–

USB Host

Adapter

Detection

OTG

EN_CHARGE

EN_BOOST

BAD_SRC

30mA

I

DC

BAT_GD

3.6V

BAT

EN_HIZ

USB

Adapter

1.5A

TERMINATION

I

TERM

I

CHG

BATSHORT

BAT

2V

CONVERTER

CONTROL

STATE

MACHINE

Q2_OCP

7A

I(Q2)

SYS

BAT

REF

DAC

I

CHG_REG

3.8V

UVLO

V

BATz+80mV

SLEEP

18V

ACOV

EN_HIZ

CE

ILIM

TS2

I

CHG

V

BAT_REG

Q4 Gate

Control

Q3_OCP_BOOST

3.2A

I(Q3)

Q2_UCP_BOOST

100mA

I(Q2)

BATTERY

THERMISTER

SENSING

Q1 Gate

Control

bq24195

bq24195L

SLUSB97 – OCTOBER 2012

www.ti.com

FUNCTIONAL BLOCK DIAGRAM

4

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