Single cell Li-Ion/Li Polymer Battery protection IC Reference Design


Design files


The bq297xy device provides the protection functions for Li-Ion/Li-Polymer cells, and monitors across the external power FETs for protection due to high charge or discharge currents. In addition, there is overcharge and depleted battery monitoring and protection. These features are implemented with low current consumption in NORMAL mode operation.

  • Over and under voltage, over current, and short circuit fault detection
  • Zero-Volt charging for depleted battery
  • Low operating current
  • This circuit is tested and includes functional EVM and User's Guide.
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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.

TIDU465.PDF (658 K)

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

TIDR959.PDF (27 K)

Detailed schematic diagram for design layout and components

TIDR960.PDF (53 K)

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

TIDC541.ZIP (427 K)

Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.

Battery protectors

BQ2970Li-Ion/Li Polymer Advanced Single-Cell Battery Protector IC Family

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report TIDA-00265 Test Results Jul. 30, 2014

Related design resources

Hardware development

BQ29700EVM-610 Single Cell Battery Protection ICs Evaluation Module

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