System-side Impedance Track™; fuel gauge with FW v1.20

BQ27500-V120

ACTIVE

Product details

Cell chemistry Li-Ion/Li-Polymer Number of series cells Single Cell Communication interface I2C Battery capacity (Min) (mAh) 300 Battery capacity (Max) (mAh) 8000 Implementation System External capacity indication None Features Impedance Track™ algorithm 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) 300 Battery capacity (Max) (mAh) 8000 Implementation System External capacity indication None Features Impedance Track™ algorithm Operating temperature range (C) -40 to 85 Cell balancing
VSON (DRZ) 12 10 mm² 4 x 2.5
  • Battery Fuel Gauge for 1-Series Li-Ion Applications
  • Resides on System Main Board
    • WBaotrtkesrywPitahckEsmbedded or Removable
  • Uses PACK+, PACK-, and T Battery Terminals
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging
    • Internal Temperature Sensor for System Temperature Reporting
    • Battery Low Interrupt Warning
    • Battery Insertion Indicator
    • 96 Bytes of Non-Volatile Scratch-Pad FLASH
  • Battery Fuel Gauge Based on Patented Impedance Track™ Technology
    • Models the 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 mΩ or Less)
  • I2C™ Interface for Connection to System Microcontroller Port
  • 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 Philips Electronics.

  • Battery Fuel Gauge for 1-Series Li-Ion Applications
  • Resides on System Main Board
    • WBaotrtkesrywPitahckEsmbedded or Removable
  • Uses PACK+, PACK-, and T Battery Terminals
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging
    • Internal Temperature Sensor for System Temperature Reporting
    • Battery Low Interrupt Warning
    • Battery Insertion Indicator
    • 96 Bytes of Non-Volatile Scratch-Pad FLASH
  • Battery Fuel Gauge Based on Patented Impedance Track™ Technology
    • Models the 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 mΩ or Less)
  • I2C™ Interface for Connection to System Microcontroller Port
  • 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 Philips Electronics.

The Texas Instruments bq27500 system-side Li-Ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery pmaiccrkosc.ontrTohlleer firdmewviacree derveeqluoipremsent.liTttlhee bqs2y7s5te0m0 resides on the system main board, and manages an embedded battery (non-removable) or a removable battery pack.

The bq27500 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 bq27500 requires only PACK+ (P+), PACK- (P-), and Thermistor (T) connections to a removable battery pack or embedded battery.

The Texas Instruments bq27500 system-side Li-Ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery pmaiccrkosc.ontrTohlleer firdmewviacree derveeqluoipremsent.liTttlhee bqs2y7s5te0m0 resides on the system main board, and manages an embedded battery (non-removable) or a removable battery pack.

The bq27500 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 bq27500 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 datasheet 20 Oct 2008
Application note Going to Production With the bq275xx (Rev. F) 09 Oct 2014
Application note Using I2C Communication With the bq275xx Series of Fuel Gauges (Rev. B) 15 May 2014
User guide bq2750xEVM System Side Single-Cell Impedance Track™ (Rev. A) 04 Oct 2013
Application note Going to Production With the bq275xx (Rev. E) 20 Jan 2012
Application note Updating bq275xx Firmware at Production (Rev. A) 21 Feb 2011
Application note How to Generate Golden Image for Single-Cell Impedance Track(TM) Devices 07 Jan 2010
Application note bq27500-V120 to bq27500-V130 Change List 03 Dec 2009
Analog design journal Improving Battery Safety, Charging, and Fuel Gauging in Portable Media Apps 11 Mar 2009
Analog design journal Q1 2009 Issue Analog Applications Journal 11 Mar 2009
Application note Feature Set Comparison of bq27x00, bq27x10, bq27500, and bq27510 (Rev. A) 02 Dec 2008
Application note bq27500-V100 to bq27500-V120 Change List 02 Dec 2008
Application note Single Cell Gas Gauge Application Book 28 Jul 2008
Application note Updating Firmware with the bq2750x and EVM. (Rev. A) 22 Jul 2008
User guide bqEASY for Single Cell Impedance Track TM Devices (Rev. A) 04 Apr 2008
Application note Impedance Track Fuel Gauge Accuracy Test for GSM Phone Applications 21 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
Application note Configuring the bq27500 Data Flash (Rev. A) 01 Feb 2008
Application note Theory and Implementation of Impedance Track Battery Fuel-Gauging Algorithm 31 Jan 2008
Application note Quick Start Guide for bq2750x Family Gas Gauge 23 Jan 2008
User guide bq27500 EVM (HPA219 Rev. A) Errata 08 Nov 2007
Application note Key Design Considerations for the bq27500 and bq27501 30 Oct 2007
More literature Quick Start Guide for bq27500/1EVM Kit 24 Oct 2007
Analog design journal Host-Side Gas-Gauge-System Design Considerations for Single-Cell Handheld Apps 12 Oct 2007
White paper Impedance Track Based Fuel Gauging 27 Sep 2007

Design & development

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

Support software

bq27500-V120 Senc File

SLUC148.ZIP (48 KB)
Support software

bqEVSW installer for all bq275xx devices (Rev. C)

SLUC367C.ZIP (63861 KB)
Simulation model

BQ275xx IBIS Model

SLUC119.ZIP (14 KB) - IBIS Model
Design tool

GASGAUGECHEM-SW — Gas Gauge Chemistry Updater

The Chemistry Updater installer contains data used by the bq Evaluation/ bqEVSW / bqEASY tool for selecting the correct or closest chemical identification file for your battery pack.

The Battery Management Studio (bqStudio) chemistry update zip file contains data used by bqStudio for selecting the (...)
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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