BQ24071 datasheet(8/26 Pages) TI

Part #	BQ24071

Description	SINGLE-CHIP LI-ION CHARGE AND SYSTEM POWER-PATH MANAGEMENT IC

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Manufacturer	TI [Texas Instruments]

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IN

ISET2

Thermal

Shutdown

Precharge

Recharge

Term

STAT1

STAT2

MODE

Suspend

Sleep

VSS

TS

BATChargeEnable

500mA/100mA

*

SignalDeglitched

UVLO

+

1V

DPPM

PowerSourceSelection

+

60mV

200mV

+

Disable−

Sleep

DPPM

Scaling

ISET1

BAT

ACChargeEnable

Q2

BAT

Short−Circuit

Recovery

BAT

Charge

Enable

Short−CircuitRecovery

+

Q1

AC

100mA /

500mA

+

GND

Oscillator

500 Ω

VO(OUT)

VI(BAT)

VI(ISET1)

1kΩ

I(SNS)

VO(OUT)

VO(OUT−REG)

VIO(AC)

Charge

Enable

VO(BAT−REG)

VI (OUT)

VO(BAT−REG)

VI(BAT)

VI(ISET1)

FastPrecharge

VO(OUT)

I(DPPM)

VSET

VDPPM

TJ

TJ(REG)

V(HTF)

V(LTF)

VO(BAT−REG)

VBAT

CE

I(TS)

VI(ISET1)

VBAT

VIN

VI(BAT)

VO(OUT)

V(SET)

C/S − 100mA

1C − 500mA

FastPrecharge

PG

GND

Charge

Control

Timer

and

Display

Logic

UDG−04084

Recovery

Fault

10mA

1V

280kΩ

VI (SNS)

TMR

OUT

VREF

3.3V

bq24070

bq24071

SLUS694B – MARCH 2006 – REVISED AUGUST 2006

FUNCTIONAL BLOCK DIAGRAM

8

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