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
• Cell balancing
• —

BQ27210的完整型号有：BQ27210DRKR、HPA00425DRKR、HPA00906DRKR，以下是这些产品的关键参数及官网采购报价：

BQ27210DRKR，工作温度：-20 to 70，封装：VSON (DRK)-10，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网BQ27210DRKR的批量USD价格：3.1（1000+）

HPA00425DRKR，工作温度：-20 to 70，封装：VSON (DRK)-10，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：-，引脚镀层/焊球材料：-，TI官网HPA00425DRKR的批量USD价格：3.1（1000+）

HPA00906DRKR，工作温度：-20 to 70，封装：VSON (DRK)-10，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：-，引脚镀层/焊球材料：-，TI官网HPA00906DRKR的批量USD价格：3.1（1000+）

BQ27XXXSW-LINUX — 用于 BQ27XXX 的 Linux 驱动程序

The Linux driver supports the BQ27x series of Battery Fuel Gauges. The Linux driver supports communication through the I2C/HDQ bus and interfaces with the power supply sub-system to monitor battery properties.

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

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