4,5mmx3,5mm

ActualSize

1

FEATURES

DESCRIPTION

STAT1

IN

IN

PG

VCC

TTCorCMODE

ISET1

ISET2

STAT2orNC

PGND

PGND

CE

SNS

BAT

CELLSorFBorNC

TS

20

1

11

10

2

3

4

5

6

7

8

9

19

18

17

16

15

14

13

12

APPLICATIONS

bq24100

,, bq24103,, bq24103A

bq24104, bq24105, bq24108, bq24109

bq24113, bq24113A, bq24115

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

IC WITH INTEGRATED POWER FETs (bqSWITCHER™)

23

• Ideal For Highly Efficient Charger Designs For

The bqSWITCHER™ series are highly integrated

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

Li-ion

and

Li-polymer

switch-mode

charge

Li-Polymer Battery Packs

management devices targeted at a wide range of

portable applications. The bqSWITCHER™ series

• bq24105 Also for LiFePO

offers integrated synchronous PWM controller and

power FETs, high-accuracy current and voltage

• Integrated Synchronous Fixed-Frequency

regulation, charge preconditioning, charge status, and

PWM Controller Operating at 1.1 MHz With 0%

charge termination, in a small, thermally enhanced

to 100% Duty Cycle

QFN

package.

The

system-controlled

version

provides additional inputs for full charge management

• Integrated Power FETs For Up To 2-A Charge

under system control.

Rate

• High-Accuracy Voltage and Current Regulation

The bqSWITCHER charges the battery in three

phases: conditioning, constant current, and constant

• Available In Both Stand-Alone (Built-In Charge

voltage.

Charge

is

terminated

based

on

user-

Management and Control) and

selectable minimum current level. A programmable

System-Controlled (Under System Command)

charge timer provides a safety backup for charge

Versions

termination. The bqSWITCHER automatically restarts

• Status Outputs For LED or Host Processor

the charge cycle if the battery voltage falls below an

Interface Indicates Charge-In-Progress, Charge

internal threshold. The bqSWITCHER automatically

Completion, Fault, and AC-Adapter Present

Conditions

RHL PACKAGE

• 20-V Maximum Voltage Rating on IN and OUT

(TOP VIEW)

(bq24100, 03, 03A, 04, 05, 08, 09, 13, 13A, 15)

Pins

• High-Side Battery Current Sensing

• Battery Temperature Monitoring

• Automatic Sleep Mode for Low Power

Consumption

• System-Controlled Version Can Be Used In

NiMH and NiCd Applications

• Reverse Leakage Protection Prevents Battery

Drainage

• Thermal Shutdown and Protection

• Built-In Battery Detection

• Available in 20-Pin, 3,5 mm × 4,5 mm QFN

Package

• Handheld Products

• Portable Media Players

• Industrial and Medical Equipment

• Portable Equipment

1

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.

2

bqSWITCHER, PowerPAD are trademarks of Texas Instruments.

3

All other trademarks are the property of their respective owners.

UNLESS

OTHERWISE

NOTED

this

document

contains

Copyright © 2004–2008, Texas Instruments Incorporated

PRODUCTION DATA information 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.