This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
Single cell Li-ion battery fuel gauge for battery pack Integration


Design kits & evaluation modules (1)

Software (6)

Name Part# Type
Linux Driver for BQ27XXX BQ27XXXSW-LINUX Software Libraries
Mathcad Chemistry Selection Tool (Rev. DJ)  (ZIP 6840 KB )    14 Jul 2015  
bqEVSW installer for all bq275xx devices (Rev. C)  (ZIP 63861 KB )    05 Mar 2013  
bq27541-G1 (v2.24) Firmware (.senc file) (Rev. A)  (ZIP 47 KB )    07 Nov 2012  
USB Drivers for Windows XP and Windows 7 (32-bit OS only) (Rev. A)  (ZIP 1456 KB )    28 Apr 2011  
bq27541 Senc Files v1.12  (ZIP 46 KB )    22 May 2009  

Development tools (1)

Name Part# Type
Gas Gauge Chemistry Updater GASGAUGECHEM-SW Circuit Design & Simulation

CAD/CAE symbols

Part# Package | Pins CAD File (.bxl) STEP Model (.stp)
BQ27541 Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Please follow the instructions below to view the CAD symbols:

Step 1: Download and install the Ultra Librarian software

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.

Step 3: Open the .bxl file with the Ultra Librarian software.

You can always access the complete CAD/CAE Symbols database at //

Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a free download.

The UL Reader is a subset of the Ultra Librarian toolset that can generate, import, and export components and their attributes in virtually any EDA CAD/CAE format.