5,5 mm x 3,5 mm

Actual Size

www.ti.com

FEATURES

APPLICATIONS

DESCRIPTION

bq24100, bq24103

bq24105, bq24108

bq24113, bq24115

SLUS606C – JUNE 2004 – REVISED SEPTEMBER 2005

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

IC WITH INTEGRATED POWER FETs (bqSWITCHER™)

•

Handheld Products

•

Ideal For Highly Efficient Charger Designs For

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

•

Portable Media Players

Li-Polymer

•

Industrial and Medical Equipment

Battery Packs

•

Portable Equipment

•

Integrated Synchronous Fixed-Frequency

PWM Controller Operating at 1.1 MHz With

0% to 100% Duty Cycle

The bqSWITCHER™ series are highly integrated

•

Integrated Power FETs For Up To 2-A Charge

Li-ion

and

Li-polymer

switch-mode

charge

Rate

management devices targeted at a wide range of

portable applications. The bqSWITCHER™ series

•

High-Accuracy Voltage and Current

offers integrated synchronous PWM controller and

Regulation

power FETs, high-accuracy current and voltage

•

Available In Both Stand-Alone (Built-In Charge

regulation, charge preconditioning, charge status, and

Management and Control) and

charge termination, in a small, thermally enhanced

System-Controlled (Under System Command)

QFN

package.

The

system-controlled

version

Versions

provides additional inputs for full charge management

under system control.

•

Status Outputs For LED or Host Processor

Interface Indicates Charge-In-Progress,

The bqSWITCHER charges the battery in three

Charge Completion, Fault, and AC-Adapter

phases: conditioning, constant current, and constant

Present Conditions

voltage.

Charge

is

terminated

based

on

user-

selectable minimum current level. A programmable

•

20-V Maximum Voltage Rating on IN and OUT

charge timer provides a safety backup for charge

Pins

termination. The bqSWITCHER automatically restarts

•

High-Side Current Sensing

the charge cycle if the battery voltage falls below an

•

Optional Battery Temperature Monitoring

internal threshold. The bqSWITCHER automatically

•

Automatic Sleep Mode for Low Power

Consumption

•

System-Controlled Version Can Be Used In

NiMH and NiCd Applications

•

Uses Ceramic Capacitors

•

Reverse Leakage Protection Prevents Battery

Drainage

•

Thermal Shutdown and Protection

•

Built-In Battery Detection

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, PowerPAD are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2004–2005, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.