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Single-Cell Li-Ion and Li-Pol Battery Gas Gauge IC

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 Rating Catalog
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 Rating Catalog
VSON (DRK) 10 12 mm² 4 x 3
  • HDQ (bq27000) or I2C (bq27200) Communication
  • Reports Accurate Time-to-Empty With Measured Load and Historical Maximum and Standby Loads
  • 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
  • Automatic Capacity Reduction With Age
  • 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 (bq27000 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.

  • HDQ (bq27000) or I2C (bq27200) Communication
  • Reports Accurate Time-to-Empty With Measured Load and Historical Maximum and Standby Loads
  • 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
  • Automatic Capacity Reduction With Age
  • 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 (bq27000 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.

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 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.

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 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

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Type Title Date
* Data sheet Single-Cell Li-Ion and Li-Pol Battery Gas Gauge IC For Portable Applications datasheet (Rev. D) 27 Feb 2006
Application note Battery Authentication and Security Schemes (Rev. A) 17 Jul 2014
EVM User's guide bq27000EVM Single Cell Battery Fuel Gauge Evaluation Module (Rev. B) 04 Oct 2013
Application note Feature Set Comparison of bq27x00, bq27x10, bq27500, and bq27510 (Rev. A) 02 Dec 2008
Application note HDQ Communication Basics (Rev. A) 18 Sep 2008
Application note ESD and RF Mitigation in Handheld Battery Pack Electronics 06 Mar 2008
Application note Single Cell Gas Gauge Circuit Design 22 Feb 2008
Application note Single Cell Impedance Track Printed-Circuit Board Layout 22 Feb 2008
More literature BQ27000_NanoEVM_ Schematic 13 Feb 2007
More literature TPS712xx_NanoEVM_OV 29 Jan 2007
Analog Design Journal Complete battery-pack design for one- or two-cell portable applications 17 Jul 2006
Application note Multicell Li-Ion and Li-Pol Battery Gas-Gauge Application Using the bqJunior 26 May 2006
Application note Using the bq27x00 With a Primary Cell Battery 15 Dec 2005
User guide bq27x00 Single-Cell Battery Fuel Gauge Module Tester and Programmer 02 Dec 2005
Application note Choosing Between Battery Gas Gauges & Monitors to Track Charge Availabilility 27 Sep 2005
Application note Configuring the bq27000/200 for Gas Gauge Applications 29 Aug 2005
Application note Building a Superior Battery Monitor with the bq27x00 20 Jun 2005

Design & development

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

Support software

SLUC261 Gas Gauge Chemistry Updater Setup v7.82

lock = Requires export approval (1 minute)
Supported products & hardware

Supported products & hardware

Products
Battery fuel gauges
BQ20Z40 SBS Compliant Gas Gauge with Impedance Track Technology for use with BQ29330 BQ20Z40-R1 SBS 1.1 compliant Gas Gauge with Impedance Track™ Technology BQ20Z70-V150 SBS 1.1-compliant gas gauge enabled with Impedance Track™ technology BQ20Z70-V160 SBS 1.1-compliant gas gauge enabled with Impedance Track™ technology for use with the bq29330 BQ20Z80 SBS 1.1-compliant gas gauge enabled with Impedance Track™; technology for use with the bq29312 BQ20Z80-V102 SBS 1.1-compliant gas gauge enabled w/Impedance Track™ technology BQ20Z80-V110 SBS 1.1-compliant gas gauge enabled w/Impedance Track™ technology with FW v1.10 BQ20Z80A-V110 SBS 1.1 compliant gas gauge enabled with Impedance Track™; technology for use with the bq29312A BQ27000 Single-Cell Li-Ion and Li-Pol Battery Gas Gauge IC BQ27010 Li-ion and Li-pol battery gas gauge IC for portable applications with HDQ BQ27200 Single-Cell Li-Ion and Li-Pol Battery Gas Gauge IC with I2C Interface BQ27210 Li-ion and Li-pol battery gas gauge IC for portable applications with I2C BQ27425-G1 System-side Impedance Track™; fuel gauge with direct battery connection | gas gauge battery BQ27505-J5 System-side Impedance Track™; fuel gauge with FW v2.29
Software
Design tool
GASGAUGECHEM-SW Gas gauge chemistry updater
Simulation model

BQ27000 IBIS Model

SLUM102.ZIP (22 KB) - IBIS Model
Package Pins Download
VSON (DRK) 10 View options

Ordering & quality

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