OAQ

(bq24600)

QFN-16

TOP VIEW

bq24600

www.ti.com

SLUS891 – FEBRUARY 2010

Check for Samples: bq24600

1

FEATURES

APPLICATIONS

•

Netbook, Mobile Internet Device, and

•

1.2 MHz NMOS-NMOS Synchronous Buck

Ultra-Mobile PC

Converter

•

Personal Digital Assistants

•

Stand-alone Charger Support for Li-Ion or

•

Handheld Terminals

Li-Polymer

•

Industrial and Medical Equipment

•

5V-28V VCC Input Voltage Range and Support

•

Portable Equipment

1-6 Battery Cells

•

Up to 10A Charge Current and Adapter Current

DESCRIPTION

•

High-Accuracy Voltage and Current Regulation

The bq24600 is highly integrated Li-ion or Li-polymer

–

±0.5% Charge Voltage Accuracy

switch-mode battery charge controller. It offers a

–

±3% Charge Current Accuracy

constant-frequency synchronous PWM controller with

•

Integration

high accuracy charge current and voltage regulation,

charge

preconditioning,

termination,

and

charge

–

Internal Loop Compensation

status monitoring,

–

Internal Soft Start

The bq24600 charges the battery in three phases:

•

Safety

preconditioning,

constant

current,

and

constant

–

Input Over-Voltage Protection

voltage. Charge is terminated when the current

–

Battery Thermistor Sense Hot/Cold Charge

reaches a minimum level. An internal charge timer

provides a safety backup. The bq24600 automatically

Suspend

restarts the charge cycle if the battery voltage falls

–

Battery Detection

below

an

internal

threshold,

and

enters

a

–

Built-in Safety Timer

low-quiescent current sleep mode when the input

–

Charge Over-Current Protection

voltage falls below the battery voltage.

–

Battery Short Protection

PACKAGE AND PIN-OUT

–

Battery Over-Voltage Protection

–

Thermal Shutdown

•

Status Outputs

–

Adapter Present

–

Charger Operation Status

•

Charge Enable Pin

•

6V Gate Drive for Synchoronous Power

Converter

•

30ns Driver Dead-time and 99.5% Max

Effective Duty Cycle

•

•

–

< 15 mA Off-State Battery Discharge current

–

< 1.5 mA Off-State Input Quiescent Current

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.

PRODUCTION DATA information is current as of publication date.

Copyright © 2010, 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.