A newer version of this product is available

open-in-new Compare products
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

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 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
VSON (DRZ) 12 10 mm² 4.0 x 2.5
  • Battery Fuel Gauge for 1-Series Li-Ion Applications
  • Resides on System Main Board
    • Works With Embedded or Removable Battery Packs
  • Works With Battery ID Resistor in Battery Pack
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging
    • Internal Temperature Sensor for System Temperature Reporting
    • Battery Low Interrupt Warning
    • Battery Insertion Indicator
    • Battery ID Detection
    • 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㪘 or Less)
  • I2C™ Interface for Connection to System Microcontroller Port
  • 12-Pin 2,5-mm x 4-mm SON Package
  • applications
    • Smartphones
    • PDAs
    • Digital Still and Video Cameras
    • Handheld Terminals
    • MP3 or Multimedia Players

Impedance Track, bqEASY are trademarks of Texas Instruments.
I2C is a trademark of Philips Electronics.

  • Battery Fuel Gauge for 1-Series Li-Ion Applications
  • Resides on System Main Board
    • Works With Embedded or Removable Battery Packs
  • Works With Battery ID Resistor in Battery Pack
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging
    • Internal Temperature Sensor for System Temperature Reporting
    • Battery Low Interrupt Warning
    • Battery Insertion Indicator
    • Battery ID Detection
    • 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㪘 or Less)
  • I2C™ Interface for Connection to System Microcontroller Port
  • 12-Pin 2,5-mm x 4-mm SON Package
  • applications
    • Smartphones
    • PDAs
    • Digital Still and Video Cameras
    • Handheld Terminals
    • MP3 or Multimedia Players

Impedance Track, bqEASY are trademarks of Texas Instruments.
I2C is a trademark of Philips Electronics.

The Texas Instruments bq27501 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 bq27501 resides on the system main board, and manages an embedded battery (non-removable) or a removable battery pack.

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

The device works with identification resistors in battery packs to gauge batteries of different fundamental chemistries and/or different rated capacities.

The Texas Instruments bq27501 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 bq27501 resides on the system main board, and manages an embedded battery (non-removable) or a removable battery pack.

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

The device works with identification resistors in battery packs to gauge batteries of different fundamental chemistries and/or different rated capacities.

Download

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 14
Type Title Date
* Data sheet System-Side Impedance-Track Fuel Gauge datasheet (Rev. A) 05 Jun 2009
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
EVM User's 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 Thermistor Selection Guide for Texas Instruments Advanced Fuel Gauges 28 Sep 2011
Application note How to Do Calibration and Create Golden DFI for Host Side Gas Gauge 01 Sep 2011
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 bqEASY for Configuring Single Cell Gas Gauge bq27501 23 Jan 2009
Application note Updating Firmware with the bq2750x and EVM. (Rev. A) 22 Jul 2008
Application note Quick Start Guide for bq2750x Family Gas Gauge 23 Jan 2008
Application note Key Design Considerations for the bq27500 and bq27501 30 Oct 2007

Design & development

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

Design tool

GASGAUGECHEM-SW Gas gauge chemistry updater

The chemistry updater installer contains data used by the bqEvaluation / 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 (...)

Supported products & hardware

Supported products & hardware

Products
Battery fuel gauges
BQ20Z40-R1 SBS 1.1 compliant Gas Gauge with Impedance Track™ Technology BQ20Z45-R1 SBS 1.1 compliant Gas Gauge with Impedance Track™ Technology BQ20Z70-V160 SBS 1.1-compliant gas gauge enabled with Impedance Track™ technology for use with the bq29330 BQ20Z75-V160 SBS 1.1-compliant gas gauge and protection-enabled IC with Impedance Track™; BQ20Z80A-V110 SBS 1.1 compliant gas gauge enabled with Impedance Track™; technology for use with the bq29312A BQ20Z90-V150 SBS v1.1 compliant gas gauge for use with the bq29330 BQ20Z95 SBS 1.1-Compliant Gas Gauge Enabled w/Impedance Track BQ27500-V120 System-side Impedance Track™; fuel gauge with FW v1.20 BQ27500-V130 System-side Impedance Track™; fuel gauge with FW v1.30 BQ27501 Complete System side battery fuel gauge with Impedance Track™; technology BQ27505-J2 System-side Impedance Track™; fuel gauge with FW v2.15 BQ27505-J3 System-side Impedance Track™; fuel gauge with FW v2.20 BQ27505-J4 System-side Impedance Track™; fuel gauge with FW v2.24 BQ27510-G1 System-side Impedance-Track fuel gauge that provides 96 bytes of user-programmable data Flash memory BQ27541 Single cell Li-ion battery fuel gauge for battery pack Integration
Hardware development
BQEVSW

BQ evaluation software (BQEVSW) v0.0.92 for BQ30Z554-R1

Software
BQSTUDIO Battery Management Studio (bqStudio) Software
Download options
Support software

bq27501 Senc File v1.23

SLUC151.ZIP (47 KB)
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)
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

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos