BQ27210系列介绍资料

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BQ27210

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适用于便携应用、带 I2C 接口的锂离子和锂聚合物电池电量监测计 IC

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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.

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.

Cell chemistry	Li-Ion/Li-Polymer
Number of series cells	Single Cell
Communication interface	I2C
Battery capacity (min) (mAh)	300
Battery capacity (max) (mAh)	6000
Implementation	Pack
External capacity indication	None
Features	Impedance Track™ algorithm
Operating temperature range (°C)	-20 to 70
Rating	Catalog

VSON (DRK)

12 mm² 4 x 3

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BQ27210

适用于便携应用、带 I2C 接口的锂离子和锂聚合物电池电量监测计 IC

4000-306-326