bq24100, bq24103, bq24105

bq24108, bq24113, bq24115

SLUS606B − JUNE 2004 − REVISED NOVEMBER 2004

SYNCHRONOUS SWITCHMODE, LI-ION AND LI-POL CHARGE MANAGEMENT

IC WITH INTEGRATED POWERFETS (bqSWITCHER

E)

1

www.ti.com

FEATURES

Single-, Two- or Three-Cell Li-Ion and Li-Pol

Battery Packs

PWM Controller Operating at 1.1 MHz with 0

to 100% Duty Cycle

Rate

Regulation

Charge Management and Control) and

System-Controlled (Under System

Command) Versions

Interface Indicates Charge-In-Progress,

Charge Completion, Fault, and AC-Adapter

Present Conditions

Pins

Consumption

NiMH and NiCd Applications

Battery Drainage

DESCRIPTION

The bqSWITCHER™ series are highly integrated

Li-ion and Li-polymer switch-mode charge

management devices targeted at a wide range of

portable applications. The bqSWITCHER™ series

offers integrated synchronous PWM controller

and power FETs, high-accuracy current and

voltage regulation, charge preconditioning,

charge status, and charge termination, in a small,

thermally

enhanced

QFN

package.

The

system-controlled version provides additional

inputs for full charge management under system

control.

The bqSWITCHER charges the battery in three

phases: conditioning, constant current, and

constant voltage. Charge is terminated based on

user-selectable minimum current level. A

programmable charge timer provides a safety

backup

for

charge

termination.

The

bqSWITCHER automatically re-starts the charge

cycle if the battery voltage falls below an internal

threshold. The bqSWITCHER automatically

APPLICATIONS

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Copyright © 2004, Texas Instruments Incorporated

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

bqSWITCHER™ and PowerPAD™ are trademarks of Texas Instruments.