BQ27010DRKR Features for the BQ27010

• HDQ (bq27010) or I2C (bq27210) Communication

• Reports Accurate Time-to-Empty At Both Measured and Host-Requested Load Values

• Reports Available Capacity Compensated for Discharge Rate, Temperature, and Age

• End-of-Discharge Voltage Compensated for Discharge Rate and Temperature

• Automatic Capacity Reduction with Age

• Reports Temperature, Voltage, and Current

• High Accuracy Charge and Discharge Current Integration with Automatic Offset Calibration

• Requires No User Calibration

• Programmable Input/Output Port

• Internal User EEPROM Configuration Memory

• Uploadable Coefficients Allows Host-Side Use with Multiple Pack Characteristics

• Stable Oscillator Without External Components

• Dynamic End-of-Discharge Detection Delay to Allow Use in a High-Dynamic Load Environment

• Automatic Sleep Mode When Communication Lines are Low

• Available in a Small 3 mm x 4 mm QFN Package

• Five Low-Power Operating Modes

• Active: < 90 µA

• Sleep: < 2.5 µA

• Ship: < 2 µA (bq27010 only)

• Hibernate: < 1.5 µA

• Data Retention: < 20 nA

• APPLICATIONS

• PDA

• Smart Phones

• MP3 Players

• Digital Cameras

• Internet Appliances

• Handheld Devices

bqJUNIOR is a trademark of Texas Instruments.

BQ27010DRKR Description for the BQ27010

The bqJUNIOR™ series are highly accurate stand-alone single-cell Li-Ion and Li-Pol battery capacity monitoring and reporting devices targeted at space-limited, portable applications. The IC monitors a voltage drop across a small current sense resistor connected in series with the battery to determine charge and discharge activity of the battery. Compensations for battery age, temperature, self-discharge, and discharge rate are applied to the capacity measurments to provide available time-to-empty information across a wide range of operating conditions. Battery capacity is automatically recalibrated, or learned, in the course of a discharge cycle from full to empty. Internal registers include current, capacity, time-to-empty, state-of-charge, cell temperature and voltage, status, and more.

The bqJUNIOR can operate directly from single-cell Li-Ion and Li-Pol batteries and communicates to the system over a HDQ one-wire or I2C serial interface.