BQ24105 Evaluation Module


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The Texas Instruments bq24105EVM is the evaluation module (EVM) for the bq24105 Li-Ion charge management IC. The bq24105 is a highly integrated battery charge IC utilizing synchronous switch mode power conversion for efficient and comprehensive charge control of a one, two, or three series cell Li-Ion battery. The EVM is a complete bq24105 based circuit and provides a convenient method to evaluate the operation and performance of the IC.

The EVM is set up at the factory to charge at 1.33A and a 4.2V (single cell) voltage limit. The output limits can be adjusted to charge a battery pack with more than one series cell by changing on-board resistors.

The EVM development tool includes a tested evalutation module; a user guide (SLUU200) that contains the schematic, bill of materials, component placement, layout and the setup of the EVM; and the bq24105 data sheet.

The only necessities to use the EVM are a power source (16V max) and the battery to be charged.

  • Input voltage: 5V to 16V (factory default) or output voltage + 0.8V to 16V (based on adjustable output voltage)
  • Charge rate: 1.33A
  • Output regulation voltage: 4.2V (factory default), can be adjusted
  • Number of series cells: 1 (factory default), can be adjusted
Battery charger ICs
BQ24105 Standalone 1-3 cell 2A synchronous Buck battery charger in a WQFN package BQ24105-Q1 Standalone automotive 1-3 cell 2A Buck battery charger

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Evaluation board

BQ24105EVM — BQ24105 Evaluation Module

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Technical documentation

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Type Title Date
* User guide Using the bq241xx bqSWITCHER(tm) (Rev. A) Nov. 29, 2007
Certificate BQ24105EVM EU Declaration of Conformity (DoC) Jan. 02, 2019
Data sheet bq241xx Synchronous Switched-Mode, Li-Ion and Li-Polymer Charge-Management IC With Integrated Power FETs (bqSWITCHER™) datasheet (Rev. P) Nov. 30, 2015
Data sheet Synchronous Switch-Mode, Li-Ion, and Li-Pol Charge Management IC (bqSwitcher) datasheet (Rev. A) May 03, 2012

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