Product details


Cell chemistry Li-Ion/Li-Polymer Number of series cells Single Cell Communication interface HDQ Battery capacity (Min) (mAh) 300 Battery capacity (Max) (mAh) 6000 Implementation Pack External capacity indication None Operating temperature range (C) -20 to 70 open-in-new Find other Battery fuel gauges

Package | Pins | Size

VSON (DRK) 10 12 mm² 4 x 3 open-in-new Find other Battery fuel gauges


  • 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
    • PDA
    • Smart Phones
    • MP3 Players
    • Digital Cameras
    • Internet Appliances
    • Handheld Devices

bqJUNIOR is a trademark of Texas Instruments.

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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.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 13
Type Title Date
* Datasheet Li-Ion and Li-Pol Battery Gas Gauge IC for Portable Apps (bqJUNIOR) datasheet (Rev. B) Jan. 16, 2007
Application note Battery Authentication and Security Schemes (Rev. A) Jul. 17, 2014
User guide bq27x10EVM Single Cell Battery Fuel Gauge Evaluation Module (Rev. A) Oct. 04, 2013
Application note Feature Set Comparison of bq27x00, bq27x10, bq27500, and bq27510 (Rev. A) Dec. 02, 2008
Application note HDQ Communication Basics (Rev. A) Sep. 18, 2008
Application note ESD and RF Mitigation in Handheld Battery Pack Electronics Mar. 06, 2008
Application note Single Cell Gas Gauge Circuit Design Feb. 22, 2008
Application note Single Cell Impedance Track Printed-Circuit Board Layout Feb. 22, 2008
Application note Transition From Prior bqJunior Gauges to the bq27x10 Jul. 17, 2007
Application note Configuring the bq27010/210 for Gas Gauge Applications Feb. 23, 2007
Application note Multicell Li-Ion and Li-Pol Battery Gas-Gauge Application Using the bqJunior May 26, 2006
Application note Using the bq27x00 With a Primary Cell Battery Dec. 15, 2005
Application note Building a Superior Battery Monitor with the bq27x00 Jun. 20, 2005

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development


The BQ27010EVM is a complete evaluation system for the bq27x10 single-cell Li-ion and Li-polymer battery gas gauge device. The BQ27010EVM includes one BQ27010EVM circuit module. The circuit module includes one bq27x10, a current sense resistor, and all other components on board necessary to (...)

  • Complete evaluation system for the bq27x10 battery gas gauge
  • Populated circuit module for quick setup
  • Software allows EEPROM programming and data logging for system analysis

Software development

SLUC078.ZIP (2289 KB)
SLUC087.ZIP (2431 KB)

Reference designs

Single-Cell Li-ion and Li-polymer Battery Fuel (Gas) Gauge Reference Design
TIDA-00054 This reference design is a solution for singlecell Li-ion and Li-Polymer battery fuel gauges in consumer electronic applications. The reference design package contains a BQ27010 circuit module, an EV2300 PC interface board for gas gauge evaluation, a USB cable, CD ROM including Windows™-based (...)
document-generic Schematic

CAD/CAE symbols

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VSON (DRK) 10 View options

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
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  • Qualification summary
  • Ongoing reliability monitoring

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