QB2057 datasheet(3/30 Pages) TI

Part #	QB2057

Description	ADVANCED LINEAR CHARGE MANAGEMENT IC FOR SINGLE-AND TWO-CELL LITHIUM-ION AND LITHIUM-POLYMER

Download	30 Pages

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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3 / 30 page

bq2057, bq2057C

bq2057T, bq2057W

SLUS025F − MAY 2001 − REVISED JULY 2002

3

www.ti.com

function block diagram

_

+

Sleep Mode

_

+

VCC

DONE

V-Control

I-Control

_

+

Voltage Regulation

Internal Reference

_

+

Battery

Recharge

Battery

Conditioning

_

+

_

+

VCC

TS2 Trip

TS1 Trip

_

+

_

+

Current Regulation

_

+

Charge Termination

High/Low SNS Set

VCC−V(SNS)

VSS−V(SNS)

VCC

0.5 VCC

I-Control

Control

Block

G(comp)

BAT

COMP

TS

SNS

CC

STAT

VSS

VCC

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QB2057 Datasheet(PDF) 3 Page - Texas Instruments

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