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APPLICATIONS

DESCRIPTION

bq27010, bq27210

SLUS707B – APRIL 2006 – REVISED JANUARY 2007

Li-Ion AND Li-Pol BATTERY GAS GAUGE IC FOR PORTABLE APPLICATIONS

(bqJUNIOR)

–

Ship: < 2 µA (bq27010 only)

–

Hibernate: < 1.5 µA

Communication

–

Data Retention: < 20 nA

• Reports Accurate Time-to-Empty At Both

Measured and Host-Requested Load Values

• PDA

• Reports Available Capacity Compensated for

Discharge Rate, Temperature, and Age

• Smart Phones

• MP3 Players

• End-of-Discharge Voltage Compensated for

Discharge Rate and Temperature

• Digital Cameras

• Internet Appliances

• Automatic Capacity Reduction with Age

• Handheld Devices

• Reports Temperature, Voltage, and Current

• High Accuracy Charge and Discharge Current

Integration with Automatic Offset Calibration

The

bqJUNIOR™

series

are

highly

accurate

• Requires No User Calibration

stand-alone single-cell Li-Ion and Li-Pol battery

• Programmable Input/Output Port

capacity monitoring and reporting devices targeted at

• Internal User EEPROM Configuration Memory

space-limited, portable applications. The IC monitors

a voltage drop across a small current sense resistor

• Uploadable Coefficients Allows Host-Side Use

connected in series with the battery to determine

with Multiple Pack Characteristics

charge

and

discharge

activity

of

the

battery.

• Stable Oscillator Without External

Compensations

for

battery

age,

temperature,

Components

self-discharge, and discharge rate are applied to the

• Dynamic End-of-Discharge Detection Delay to

capacity

measurments

to

provide

available

Allow Use in a High-Dynamic Load

time-to-empty information across a wide range of

Environment

operating

conditions.

Battery

capacity

is

automatically recalibrated, or learned, in the course

• Automatic Sleep Mode When Communication

of a discharge cycle from full to empty. Internal

Lines are Low

registers include current, capacity, time-to-empty,

• Available in a Small 3 mm x 4 mm QFN

state-of-charge, cell temperature and voltage, status,

Package

and more.

• Five Low-Power Operating Modes

The bqJUNIOR can operate directly from single-cell

–

Active: < 90 µA

Li-Ion and Li-Pol batteries and communicates to the

–

Sleep: < 2.5 µA

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.

bqJUNIOR is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2006–2007, 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.