BQ24005 datasheet(7/22 Pages) TI

Part #	BQ24005

Description	TWO-CELL Li-ION CHARGE MANAGEMENT IC FOR PDAs AND INTERNET APPLIANCES

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Manufacturer	TI [Texas Instruments]

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bq24004

bq24005

bq24006

SLUS476B – DECEMBER 2000 – REVISED MAY 2002

www.ti.com

7

FUNCTIONAL BLOCK DIAGRAM

–

+

Charge Control, Charge Timer

and

Display Logic

OSC

VCC

STAT1

STAT2

TaperDet

REG

PWRDWN

CR

ChargeOK

PWRDWN

UVS

Thermal

Shutdown

TMR SEL

–

+

–

+

Power On

Delay

CLRFLT

APG/

THERM

R9

Precharge

Bias and

Ref

Generator

V(ref) V(uvlo)

H: V(reg) = 8.4 V/Cell

L: V(reg) = 8.2 V/Cell

VSEL

EN

R8

ChipEN

UVS

V(uvlo)

+

–

ChargeOK

LowV

V(ilim)

VCC

ISNS

–

+

TaperDet

IN

V(ref)

AGND

VSENSE

OUT

GND/

HEATSINK

OverV

HighV

LowV

V(ref)

PWRDWN

Two Open

Drain

Outputs

for

bq24005

0.2*V(ilim)

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