bq3050

www.ti.com

SLUSA92A

– JANUARY 2011 – REVISED JUNE 2011

2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

Check for Samples: bq3050

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FEATURES

DESCRIPTION

•

Fully Integrated 2-Series, 3-Series, and

The bq3050 device is a fully integrated, single-chip,

4-Series Li-Ion or Li-Polymer Cell Battery Pack

pack-based solution that provides a rich array of

Manager and Protection

features

for

gas

gauging,

protection,

and

•

Advanced Compensated End-of-Discharge

authentication for 2-series, 3-series, and 4-series cell

Voltage (CEDV) Gauging

Li-Ion and Li-Polymer battery packs.

•

High Side N-CH Protection FET Drive

Using

its

integrated

high-performance

analog

•

Integrated Pre-Charge FET

peripherals,

the

bq3050

device

measures

and

•

Integrated Cell Balancing

maintains an accurate record of available capacity,

•

Low Power Modes

voltage,

current,

temperature,

and

other

critical

– Low Power: < 180 µA

parameters in Li-Ion or Li-Polymer batteries, and

reports this information to the system host controller

– Sleep < 76 µA

over an SMBus v1.1 compatible interface.

•

Full Array of Programmable Protection

Features

The bq3050 provides software-based 1st-level and

– Voltage

2nd-level

safety

protection

for

overvoltage,

undervoltage,

overtemperature,

and

overcharge

– Current

conditions, as well as hardware-based protection for

– Temperature

overcurrent in discharge and short circuit in charge

•

Sophisticated Charge Algorithms

and discharge conditions.

– JEITA

SHA-1

authentication

with

secure

memory

for

– Enhanced Charging

authentication keys enables identification of genuine

– Adaptive Charging

battery packs beyond any doubt.

•

Supports Two-Wire SMBus v1.1 Interface

The compact 38-lead TSSOP package minimizes

•

SHA-1 Authentication

solution cost and size for smart batteries while

•

Compact Package: 38-Lead TSSOP

providing

maximum

functionality

and

safety

for

battery gauging applications.

APPLICATIONS

•

Notebook/Netbook PCs

•

Medical and Test Equipment

•

Portable Instrumentation

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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

© 2011, 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.