Product details

Cell chemistry Li-Ion/Li-Polymer Number of series cells Single Cell Communication interface I2C Battery capacity (Min) (mAh) 100 Battery capacity (Max) (mAh) 4000 Implementation System External capacity indication None Features Operating temperature range (C) -40 to 85 Cell balancing
Cell chemistry Li-Ion/Li-Polymer Number of series cells Single Cell Communication interface I2C Battery capacity (Min) (mAh) 100 Battery capacity (Max) (mAh) 4000 Implementation System External capacity indication None Features Operating temperature range (C) -40 to 85 Cell balancing
DSBGA (YZF) 15 5 mm² 2.73 x 1.79
  • Single-Series Cell Li-Ion Battery Fuel Gauge
    • Resides on System Board
    • Supports Embedded or Removable Batteries
    • Powered Directly From Battery With Integrated
      LDO
    • Low-Value Integrated Sense Resistor
      (10 mΩ, Typical)
  • Easy-to-Configure Fuel Gauging Based on
    Patented Impedance Track Technology
    • Reports Remaining Capacity and State of
      Charge (SOC) With Smoothing Filter
    • Automatically Adjusts for Battery Aging, Self-
      Discharge, Temperature, and Rate Changes
    • Battery State-of-Health (Aging) Estimation
  • Microcontroller Peripheral Supports:
    • 400-kHz I2C Serial Interface
    • Configurable SOC Interrupt or
      Battery Low Digital Output Warning
    • Internal Temperature Sensor or
      Host-Reported Temperature
  • Single-Series Cell Li-Ion Battery Fuel Gauge
    • Resides on System Board
    • Supports Embedded or Removable Batteries
    • Powered Directly From Battery With Integrated
      LDO
    • Low-Value Integrated Sense Resistor
      (10 mΩ, Typical)
  • Easy-to-Configure Fuel Gauging Based on
    Patented Impedance Track Technology
    • Reports Remaining Capacity and State of
      Charge (SOC) With Smoothing Filter
    • Automatically Adjusts for Battery Aging, Self-
      Discharge, Temperature, and Rate Changes
    • Battery State-of-Health (Aging) Estimation
  • Microcontroller Peripheral Supports:
    • 400-kHz I2C Serial Interface
    • Configurable SOC Interrupt or
      Battery Low Digital Output Warning
    • Internal Temperature Sensor or
      Host-Reported Temperature

The Texas Instruments bq27425-G2 fuel gauge is an easy-to-configure microcontroller peripheral that provides system-side fuel gauging for single-cell Li-Ion batteries. The device requires minimal user configuration and system microcontroller firmware development.

The fuel gauge uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), and battery voltage (mV).

Battery fuel gauging with the bq27425-G2 fuel gauge requires connections only to PACK+ (P+) and PACK– (P–) for a removable battery pack or embedded battery circuit. The 15-pin, 2.69 mm × 1.75 mm, 0.5-mm pitch chip scale package (DSBGA) is ideal for space-constrained applications.

The Texas Instruments bq27425-G2 fuel gauge is an easy-to-configure microcontroller peripheral that provides system-side fuel gauging for single-cell Li-Ion batteries. The device requires minimal user configuration and system microcontroller firmware development.

The fuel gauge uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), and battery voltage (mV).

Battery fuel gauging with the bq27425-G2 fuel gauge requires connections only to PACK+ (P+) and PACK– (P–) for a removable battery pack or embedded battery circuit. The 15-pin, 2.69 mm × 1.75 mm, 0.5-mm pitch chip scale package (DSBGA) is ideal for space-constrained applications.

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Technical documentation

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Type Title Date
* Data sheet bq27425-G2 System-Side Impedance Track Fuel Gauge With Integrated Sense Resistor datasheet (Rev. B) 30 Jun 2015
Application note bq27425-G1 to bq27425-Gx Change List 19 Oct 2012
Application note Going to Production With the bq27425 23 Apr 2012
Application note Single Cell Gas Gauge Circuit Design 22 Feb 2008
Application note Single Cell Impedance Track Printed-Circuit Board Layout 22 Feb 2008
Application note Theory and Implementation of Impedance Track Battery Fuel-Gauging Algorithm 31 Jan 2008

Design & development

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

Application software & framework

BQSTUDIO — Battery Management Studio (bqStudio) Software

Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)
Support software

bq27425-G2 Evaluation Software Installer (Rev. A)

SLUC400A.ZIP (7307 KB)
Package Pins Download
DSBGA (YZF) 15 View options

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