A newer version of this product is available

Same functionality with different pin-out to the compared device.
BQ27532-G1 ACTIVE Battery management unit Impedance Track™ fuel gauge for bq2425x charger

Improved safety and security, state-of-health (SOH) and multi-level based charge profiles

Product details

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VSON (DRZ) 12 10 mm² 2.5 x 4
  • Battery Fuel Gauge for 1-Series Li-Ion Applications
  • Resides on System Main Board
    • Works with Embedded or Removable Battery Packs
    • Uses PACK+, PACK–, and T Battery Terminals
    • Can be Powered Directly From Battery Pack (no LDO required)
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging
    • Battery Low Interrupt Warning
    • Battery Insertion Indicator
    • 64 Bytes of Non-Volatile Scratch Pad FLASH
  • Battery Fuel Gauging Based on Patented Impedance Track™ Technology
    • Models Battery Discharge Curve for Accurate Time-To-Empty Predictions
    • Automatically Adjusts for Battery Aging, Battery Self-Discharge,
      and Temperature/Rate Inefficiencies
    • Low-Value Sense Resistor (10 m or less)
  • I2C™ for Connection to System Microcontroller Port
  • Small 12-pin 2,5 mm × 4 mm SON Package
  • APPLICATIONS
    • Smartphones
    • PDAs
    • Digital Still and Video Cameras
    • Handheld Terminals
    • MP3 or Multimedia Players

Impedance Track is a trademark of Texas Instruments.
I2C is a trademark of Phillips Corporation.

  • Battery Fuel Gauge for 1-Series Li-Ion Applications
  • Resides on System Main Board
    • Works with Embedded or Removable Battery Packs
    • Uses PACK+, PACK–, and T Battery Terminals
    • Can be Powered Directly From Battery Pack (no LDO required)
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging
    • Battery Low Interrupt Warning
    • Battery Insertion Indicator
    • 64 Bytes of Non-Volatile Scratch Pad FLASH
  • Battery Fuel Gauging Based on Patented Impedance Track™ Technology
    • Models Battery Discharge Curve for Accurate Time-To-Empty Predictions
    • Automatically Adjusts for Battery Aging, Battery Self-Discharge,
      and Temperature/Rate Inefficiencies
    • Low-Value Sense Resistor (10 m or less)
  • I2C™ for Connection to System Microcontroller Port
  • Small 12-pin 2,5 mm × 4 mm SON Package
  • APPLICATIONS
    • Smartphones
    • PDAs
    • Digital Still and Video Cameras
    • Handheld Terminals
    • MP3 or Multimedia Players

Impedance Track is a trademark of Texas Instruments.
I2C is a trademark of Phillips Corporation.

The Texas Instruments bq27510-G2 system-side Li-Ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery packs. The device requires little system microcontroller firmware development. The bq27510-G2 resides on the system’s main board and manages an embedded battery (non-removable) or a removable battery pack.

The bq27510-G2 uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), run-time to empty (min.), battery voltage (mV), and temperature (°C).

Battery fuel gauging with the bq27510-G2 requires only PACK+ (P+), PACK– (P–), and Thermistor (T) connections to a removable battery pack or embedded battery.

The Texas Instruments bq27510-G2 system-side Li-Ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery packs. The device requires little system microcontroller firmware development. The bq27510-G2 resides on the system’s main board and manages an embedded battery (non-removable) or a removable battery pack.

The bq27510-G2 uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), run-time to empty (min.), battery voltage (mV), and temperature (°C).

Battery fuel gauging with the bq27510-G2 requires only PACK+ (P+), PACK– (P–), and Thermistor (T) connections to a removable battery pack or embedded battery.

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Technical documentation

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Type Title Date
* Data sheet System-Side Impedance-Track Fuel Gauge, With Direct Battery Connection datasheet 27 May 2009
EVM User's guide bq27510EVM System-Side Single-Cell Impedance Track™ Technology Evaluation Module (Rev. B) 31 Jul 2016
Application note Going to Production With the bq275xx (Rev. F) 09 Oct 2014
Application note Theory and Implementation of Impedance Track Battery Fuel-Gauging Algorithm (Rev. A) PDF | HTML 16 May 2014
Application note Using I2C Communication With the bq275xx Series of Fuel Gauges (Rev. B) 15 May 2014
Application note bq27510-G2 to bq27510-G3 Change List 14 Jun 2013
Application note Going to Production With the bq275xx (Rev. E) 20 Jan 2012
Application note WinCE/Linux Drivers for bq275xx Fuel Gauge 17 Mar 2011
Application note Updating bq275xx Firmware at Production (Rev. A) 21 Feb 2011
Application note Configuring the bq27510-G2 Data Flash 01 Sep 2010
Application note bq27510-G1 - bq27510-G2 Change List 30 Aug 2010
Application note bq27510 to bq27510-G1 Change List 10 May 2010
Application note How to Generate Golden Image for Single-Cell Impedance Track(TM) Devices 07 Jan 2010
Application note Feature Set Comparison of bq27x00, bq27x10, bq27500, and bq27510 (Rev. A) 02 Dec 2008
Application note Updating Firmware with the bq2750x and EVM. (Rev. A) 22 Jul 2008

Design & development

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

Evaluation board

BQ27510EVM — System-Side Single-Cell Impedance Track™ Technology Evaluation Module  | Battery Fuel Gauge

This evaluation module (BQ27510EVM) is a complete evaluation system for the bq27510. The EVM includes one bq27510 circuit module, a current sense resistor, and one thermistor. The circuit module includes one bq27510 integrated circuit and all other onboard components necessary to monitor and (...)

User guide: PDF
Not available on TI.com
Support software

Gas Gauge Chemistry Updater Setup v7.82 (Rev. HY)

SLUC261HY.ZIP (496964 KB)
lock = Requires export approval (1 minute)
Support software

bqEVSW installer for all bq275xx devices (Rev. C)

SLUC367C.ZIP (63861 KB)
Support software

bq27510-G3 Firmware Image (SENC V4.00)

SLUC442.ZIP (47 KB)
Support software

bq27510-G3 Firmware Image (SREC V4.00)

SLUC621.ZIP (51 KB)
Simulation model

BQ275xx IBIS Model

SLUC119.ZIP (14 KB) - IBIS Model
CAD/CAE symbol

Mathcad Chemistry Selection Tool (Rev. DJ)

SLUC138DJ.ZIP (6840 KB)
Package Pins Download
SON (DRZ) 12 View options

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