System-Side Impedance Track Battery Gas Gauge


Design files


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 current to determine the state of charge and state of health of Lithium Ion rechargeable batteries.

  • Powered directly from battery with integrated LDO
  • Provides I2C interface to communicate with host processor
  • No host algorithm development needed to determine state of charge of the battery
Personal electronics
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDU476.PDF (213 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDR992.PDF (336 K)

Detailed schematic diagram for design layout and components

TIDR993.PDF (97 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDR994.PDF (131 K)

Detailed overview of design layout for component placement

TIDR995.PDF (201 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Battery fuel gauges

BQ27441-G1System-side Impedance Track™ battery fuel (gas) gauge

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report TIDA-00251 Test Results Aug. 05, 2014

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