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BQ27441-G1

ACTIVE

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

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Data sheet

A newer version of this product is available

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BQ27441-G1

ACTIVE
Data sheet Order now

Product details

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 Rating Catalog
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 Rating Catalog
VSON (DRZ) 12 1E+1 mm² 4 x 2.5
  • 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
  • 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

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.

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

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Type Title Date
* Data sheet bq27441-G1 System-Side Impedance Track Fuel Gauge datasheet (Rev. C) PDF | HTML 19 Dec 2014
Application note Achieving The Successful Learning Cycle 19 Jun 2018
Application note Simple Guide to Chemical ID Selection Tool (GPC) (Rev. A) 05 Jun 2018
Application note Gauge Communication 12 Jan 2017
Application note Enhanced Resolution Gauging for Low Current Applications Using Scaling 26 Oct 2016
Technical article Is a LiFePO4 or Lithium-ion battery better for eCall systems? 25 Oct 2016
Technical article Gas gauging solutions for Li-ion batteries: Part 1 27 May 2015
EVM User's guide bq27441EVM Pack-Side Impedance Track Fuel Gauge (Rev. A) 31 Jul 2014
Application note Theory and Implementation of Impedance Track Battery Fuel-Gauging Algorithm (Rev. A) PDF | HTML 16 May 2014
User guide bq27441-G1 Technical Reference Manual (Rev. A) 06 May 2014
User guide Quick Start Guide for bq27441-G1 13 Aug 2013
EVM User's guide bq27441EVM Pack-Side Impedance Track Fuel Gauge 13 Aug 2013

Design & development

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

Evaluation board

BOOSTXL-BATPAKMKII — Fuel Tank MKII Battery BoosterPack Plug-In Module

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 (...)

User guide: PDF
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Evaluation board

BQ27441EVM-G1A — BQ27441 evaluation board 

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 (...)
User guide: PDF
Not available on TI.com
Evaluation board

BQ27441EVM-G1B — BQ27441 evaluation board 

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 (...)
User guide: PDF
Not available on TI.com
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 (...)
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Code example or demo

BOOSTXL-BATPAKMKII-SW

Supported products & hardware

Supported products & hardware

Products
Battery charger ICs
BQ24250 — 1-cell, 2-A, I2C controlled buck battery charger with 1uA in SYSOFF mode and TS disable function
Battery fuel gauges
BQ27441-G1 — System-side Impedance Track™ battery fuel (gas) gauge
Hardware development
BOOSTXL-BATPAKMKII — Fuel Tank MKII Battery BoosterPack Plug-In Module
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Driver or library

BQ27XXXSW-LINUX — Linux Driver for BQ27XXX

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

(...)

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Reference designs

TIDA-00251 — System-Side Impedance Track Battery Gas Gauge

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 (...)
Test report: PDF
Schematic: PDF
Package Pins Download
VSON (DRZ) 12 View options
TI's Standard Terms and Conditions for Evaluation Items apply.

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

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