Home Power management Battery management ICs Battery fuel gauges

BQ27441-G1

ACTIVE
Order now

System-side Impedance Track™ battery fuel (gas) gauge

Data sheet
Top
System-side Impedance Track™ battery fuel (gas) gauge

BQ27441-G1

ACTIVE
Data sheet Order now

Product details

Parameters

Cell chemistry Li-Ion/Li-Polymer Number of series cells Single Cell Communication interface I2C Battery capacity (Min) (mAh) 200 Battery capacity (Max) (mAh) 8000 Implementation System External capacity indication None Features Impedance Track™ algorithm Operating temperature range (C) -40 to 85 Cell balancing — open-in-new Find other Battery fuel gauges

Package | Pins | Size

VSON (DRZ) 12 10 mm² 4 x 2.5 open-in-new Find other Battery fuel gauges

Features

  • Single Series Cell Li-Ion Battery Fuel Gauge
    • Resides on System Board
    • Supports Embedded or Removable Batteries
    • Powered Directly from Battery with Integrated LDO
    • Supports a Low-Value External Sense Resistor
      (10 mΩ)
  • Battery 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
 open-in-new Find other Battery fuel gauges

Description

The Texas Instruments bq27441-G1 fuel gauge is a 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 bq27441-G1 battery 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 bq27441-G1 fuel gauge requires connections only to PACK+ (P+) and PACK– (P–) for a removable battery pack or embedded battery circuit. The tiny, 12-pin, 2.50 mm × 4.00 mm, small outline no-lead (SON) package is ideal for space-constrained applications.

 open-in-new Find other Battery fuel gauges
Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 12
Type Title Date
* Datasheet bq27441-G1 System-Side Impedance Track Fuel Gauge datasheet (Rev. C) Dec. 19, 2014
Application note Enhanced Resolution Gauging for Low Current Applications Using Scaling Oct. 26, 2016
Technical articles Is a LiFePO4 or Lithium-ion battery better for eCall systems? Oct. 25, 2016
Technical articles Gas gauging solutions for Li-ion batteries: Part 1 May 26, 2015
User guide bq27441EVM Pack-Side Impedance Track Fuel Gauge (Rev. A) Jul. 31, 2014
User guide bq27441-G1 Technical Reference Manual (Rev. A) May 06, 2014
User guide bq27441-G1 Technical Reference Manual Dec. 19, 2013
User guide Quick Start Guide for bq27441-G1 Aug. 13, 2013
User guide bq27441EVM Pack-Side Impedance Track Fuel Gauge Aug. 13, 2013
Application note Single Cell Gas Gauge Circuit Design Feb. 22, 2008
Application note Single Cell Impedance Track Printed-Circuit Board Layout Feb. 22, 2008
Application note Theory and Implementation of Impedance Track Battery Fuel-Gauging Algorithm Jan. 31, 2008

Design & development

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

Hardware development

EVALUATION BOARD Download
Description

The Fuel Tank MKII BoosterPack™ plug-in module is the next generation design of the original Fuel Tank BoosterPack module. It includes next-generation TI battery monitoring ICs and other new features to make it easier to use. It allows TI LaunchPad™ development kits to be powered from (...)

Features
  • 3.7V 1200mAh lithium polymer battery
  • On- board BQ24250 lithium polymer charger
  • On- board BQ27441 gas gauge
  • Works with TI LaunchPad™ Development Kits
  • USB charging with indicator LED
  • Battery status outputs: battery temperature, voltage, average current, charge state, and remaining capacity
View details
EVALUATION BOARD Download
99
Description
The BQ27441EVM-G1A evaluation module is a complete evaluation system for the bq27441-G1A. The EVM includes one bq27441-G1A circuit module with external current-sense resistor. The bq27441-G1A should be used with batteries that have a 4.2 V charge voltage. A separate orderable EV2300 or EV2400 PC (...)
Features
  • Populated circuit module for quick setup and evaluation.
  • Downloadable software that can be used for data logging and analysis.
View details
EVALUATION BOARD Download
99
Description
The BQ27441EVM-G1B evaluation module is a complete evaluation system for the bq27441-G1B. The EVM includes one bq27441-G1B circuit module with an external current-sense resistor. The bq27441-G1B should be used with batteries that have a 4.3 or 4.35 V charge voltage. A separate orderable EV2400 PC (...)
Features
  • Populated circuit module for quick setup and evaluation.
  • Downloadable software that can be used for data logging and analysis.
View details

Software development

APPLICATION SOFTWARE & FRAMEWORK Download
Battery Management Studio (bqStudio) Software
BQSTUDIO — 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 (...)
Features
  • Real-time Gauge Dashboard for monitoring basic registers
  • Full register access and logging
  • Full data memory access and logging
  • Product configuration and monitoring tools
  • Import and export of product configurations
  • Calibration and test automation
  • Export of FS files for the target production environment 
View details
DRIVER OR LIBRARY Download
Linux Driver for BQ27XXX
BQ27XXXSW-LINUX — The Linux driver supports the BQ27x series of Battery Fuel Gauges. The Linux driver supports communication through the I2C/HDQ bus and interfaces with the power supply sub-system to monitor battery properties.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

(...)

Reference designs

REFERENCE DESIGNS Download
System-Side Impedance Track Battery Gas Gauge
TIDA-00251 — The TIDA-00251 reference design 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 design uses temperature, voltage, and (...)
document-generic Schematic

CAD/CAE symbols

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

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

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. ​​​​​​​​​​​​​​

Training series

View all TI training and videos

Videos