Code example or demo
Data sheet
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BQ27441-G1
- 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
- Reports Remaining Capacity and State-of-Charge
- 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.
Technical documentation
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View all 10 | 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 | ||
| 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
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
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
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 (...)
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
(...)
Support software
BQEVSW-MKST-UPDATE — Software Update to enable BQEVSW to use MKST-3P-ALT-EV2300
BQ-BATTERY-PROGRAMMER-SW software development kit (SDK) is a collection of robust software command line tools that assist with the process of programming, testing, or assembling packs that use TI Battery management products. The executables in this software work with the MKST-3P-ALT-EV2300 MKS (...)
Supported products & hardware
Products
Battery fuel gauges
Hardware development
Evaluation board
Software
Support software
Application software & framework
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 (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VSON (DRZ) | 12 | Ultra Librarian |
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
Information included:
- Fab location
- Assembly location
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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