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Product details

Parameters

Cell chemistry Li-Ion/Li-Polymer Number of series cells Single Cell Communication interface HDQ, I2C Battery capacity (Min) (mAh) 300 Battery capacity (Max) (mAh) 14500 Implementation Pack External capacity indication None Features SHA-1 Authentication Operating temperature range (C) -40 to 85 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

  • Battery Fuel Gauge for 1-Series (1sXp) Li-Ion Applications
    up to 14,500-mAh Capacity
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging Supports up to
      14,500 mAh
    • Internal or External Temperature Sensor for Battery
      Temperature Reporting
    • SHA-1/HMAC Authentication
    • Lifetime Data Logging
    • 64 Bytes of Non-Volatile Scratch Pad FLASH
  • Battery Fuel Gauging Based on Patented Impedance Track
    Technology
    • Models 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 (5 mΩ to 20 mΩ)
  • Advanced Fuel Gauging Features
    • Internal Short Detection
    • Tab Disconnection Detection
  • HDQ and I2C Interface Formats for Communication
    With Host System
  • Small 12-pin 2,5 mm × 4 mm SON Package
open-in-new Find other Battery fuel gauges

Description

The Texas Instruments bq27541-G1 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 for accurate battery fuel gauging. The fuel gauge resides within the battery pack or on the main board of the system with an embedded battery (nonremovable).

The fuel gauge uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), run-time to empty (minimum), battery voltage (mV), and temperature (°C). It also provides detections for internal short or tab disconnection events.

The fuel gauge also features integrated support for secure battery pack authentication, using the SHA-1/HMAC authentication algorithm.

open-in-new Find other Battery fuel gauges
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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 21
Type Title Date
* Datasheet Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration, bq27541-G1 datasheet (Rev. D) Feb. 19, 2014
Application note Achieving The Successful Learning Cycle Jun. 19, 2018
Application note Host System Calibration Method (Rev. B) May 19, 2016
Technical articles Unboxing high end gas gauges Aug. 25, 2015
Application note Using I2C Communication With the bq275xx Series of Fuel Gauges (Rev. B) May 15, 2014
Application note bq27541-v200 to bq27541-G1 Change List (Rev. A) Oct. 21, 2012
Application note Configuring the bq2754x-G1 Data Flash Oct. 16, 2012
Application note Thermistor Selection Guide for Texas Instruments Advanced Fuel Gauges Sep. 28, 2011
Application note WinCE/Linux Drivers for bq275xx Fuel Gauge Mar. 17, 2011
Application note Fine tuning TI's Impedance Track™ battery fuel gauge with LiFePO4 cells Mar. 14, 2011
Application note Going to Production With the bq2754x (Rev. A) Mar. 11, 2011
Application note Updating bq275xx Firmware at Production (Rev. A) Feb. 21, 2011
Application note How to Generate Golden Image for Single-Cell Impedance Track(TM) Devices Jan. 07, 2010
Application note Improving Battery Safety, Charging, and Fuel Gauging in Portable Media Apps Mar. 11, 2009
Application note Updating Firmware with the bq2750x and EVM. (Rev. A) Jul. 22, 2008
Application note Impedance Track Fuel Gauge Accuracy Test for GSM Phone Applications Mar. 21, 2008
Application note ESD and RF Mitigation in Handheld Battery Pack Electronics Mar. 06, 2008
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
White paper Impedance Track Based Fuel Gauging Sep. 27, 2007

Design & development

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

Hardware development

EVALUATION BOARD Download
199
Description

This evaluation module (EVM) is a complete evaluation system for the bq27541. The EVM includes one bq27541 circuit module, a current sense resistor, one thermistor, an EV2300 personal computer (PC) interface board for gas gauge interface, a PC USB cable, and Windows™-based PC software. The (...)

Features
  • Complete evaluation system for the bq27541 gas gauge with Impedance Track™ Technology
  • Populated circuit module for quick setup
  • PC software and interface board for easy evaluation
  • Software that allows data logging for system analysis

Software development

APPLICATION SOFTWARE & FRAMEWORK Download
Gauging Parameter Calculator: Match chemistry for Impedance Track gauges
GPCCHEM GPC Chemistry ID matching for Impedance Track (IT) algorithm gas gauges (Find closest chemistry match) must be done before Optimizing room temperature or low temperature performance.

Gauging Parameter Calculator Chemistry ID matching for Impedance track gas gauges (GPCCHEM) is a math calculation and (...)

APPLICATION SOFTWARE & FRAMEWORK Download
Gauging Parameter Calculator: Optimize room temperature performance for Impedance Track gauges
GPCRA0 Gauging Parameter Calculator – Optimize room temperature performance for Impedance track gas gauges (GPCRA0) / Golden GG Maker is a math calculation tool that helps the battery designer to refine the Impedance Track battery gauge parameters for a given battery profile. It provides optimized (...)
APPLICATION SOFTWARE & FRAMEWORK Download
Gauging Parameter Calculator: Optimize room and low temp performance Impedance Track gauges
GPCRB Gauging Parameter Calculator – Optimize room and low temperature performance for Impedance track gas gauges (GPCRB) is a math calculation tool that helps the battery designer to refine the Impedance Track battery gauge parameters for a given battery profile. Depending on the input log file, it (...)
FIRMWARE Download
SLUC606.ZIP (4083 KB)
SUPPORT SOFTWARE Download
SLUC367C.ZIP (63861 KB)
SUPPORT SOFTWARE Download
SLUC368A.ZIP (47 KB)
SUPPORT SOFTWARE Download
SLUC564FW.ZIP (2777 KB)

Design tools & simulation

CAD/CAE SYMBOL Download
SLUC138DJ.ZIP (6840 KB)

CAD/CAE symbols

Package Pins Download
SON (DRZ) 12 View options

Ordering & quality

Information included:
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  • 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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