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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
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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.

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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 notes 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 guides bq27441EVM Pack-Side Impedance Track Fuel Gauge (Rev. A) Jul. 31, 2014
User guides bq27441-G1 Technical Reference Manual (Rev. A) May 06, 2014
User guides bq27441-G1 Technical Reference Manual Dec. 19, 2013
User guides Quick Start Guide for bq27441-G1 Aug. 13, 2013
User guides bq27441EVM Pack-Side Impedance Track Fuel Gauge Aug. 13, 2013
Application notes Single Cell Gas Gauge Circuit Design Feb. 22, 2008
Application notes Single Cell Impedance Track Printed-Circuit Board Layout Feb. 22, 2008
Application notes 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 BOARDS Download
document-generic User guide
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
EVALUATION BOARDS Download
document-generic User guide
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.
EVALUATION BOARDS Download
document-generic User guide
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.

Software development

APPLICATION SOFTWARE & FRAMEWORKS 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 
DRIVERS & LIBRARIES 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 document-generic User guide

CAD/CAE symbols

Package Pins Download
SON (DRZ) 12 View options

Ordering & quality

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