The BQ35100 Battery Fuel Gauge and End-Of-Service Monitor provides highly configurable fuel gauging for non-rechargeable (primary) lithium batteries without requiring a forced discharge of the battery. Built so that optimization is not necessary to achieve accurate gauging, the BQ35100 device uses patented TI gauging algorithms to support the option to seamlessly replace an old battery with a new one.
The BQ35100 device provides accurate results with ultra-low average power consumption where less than 2 µA can be achieved through host control via the GAUGE ENABLE (GE) pin. The device is only required to be powered long enough, at a system-determined update frequency, to gather data and to make calculations to support the selected algorithm. A typical system may need to only be updated once every 8 hours as the gauge is not required to be powered to measure all discharge activity.
The fuel gauging functions use voltage, current, and temperature measurements to provide state-of-health (SOH) data and end-of-service (EOS) warning information where the host can read the gathered data through a 400-kHz I2C bus. An ALERT output, based on a variety of configurable status and data options, is also available to interrupt the host.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | BQ35100 Lithium Primary Battery Fuel Gauge and End-Of-Service Monitor datasheet (Rev. E) | PDF | HTML | 08 Apr 2019 |
| * | User guide | bq35100 Technical Reference Manual (Rev. C) | 26 Mar 2018 | |
| Application note | How to Configure the BQ35100 for EOS Mode | PDF | HTML | 15 Sep 2022 | |
| Application note | Alternative Gauging Techniques for Flow Meters and the Benefits of the bq35100 | 15 Nov 2018 | ||
| Technical article | Facing smart meter design challenges, part 1: maximizing battery life | 16 Aug 2018 | ||
| Application note | Using the BQ35100 with Li-Primary Based Applications | 20 Jun 2018 | ||
| Application note | Gauge Communication | 12 Jan 2017 | ||
| Technical article | How do you detect battery aging in rarely discharged applications? | 10 Jan 2017 | ||
| Technical article | How to choose a multicell gauge | 16 Dec 2016 | ||
| Application note | Using I2C Communications With the bq34110 bq35100 and bq34z100-G1 Series of Gas | PDF | HTML | 09 Nov 2016 | |
| EVM User's guide | bq35100EVM-795 Evaluation Module User’s Guide | 12 Jul 2016 |
For additional terms or required resources, click any title below to view the detail page where available.
Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)
Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)
| Package | Pins | Download |
|---|---|---|
| TSSOP (PW) | 14 | View options |
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Windows Installer for Battery Management Studio (bqStudio)
Download Chemistry zip file for bqStudio & use bqStudio Help menu to import the latest chemistries.
Battery Management Studio (bqStudio) Documentation
Battery Management Studio (bqStudio) change summary documentation
Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including support for real-time watching, graphing, and logging, an easy interface to send commands, direct low-level communication and I/O, as well as automated and guided support for configuration, calibration, performing a learning cycle, and generating useful files for taking the device to production.
Older products such as bq20xxx and bq30xxx are not supported in bqStudio. Download the specific evaluation software from the appropriate product page.
Requires: EV2400 or MKST-3P-ALT-EV2300
Windows Installer for Battery Management Studio (bqStudio)
Use this file with Battery Management Studio (bqStudio) Help menu to import the latest chemistries.
Battery Management Studio (bqStudio) Documentation
Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including support for real-time watching, graphing, and logging, an easy interface to send commands, direct low-level communication and I/O, as well as automated and guided support for configuration, calibration, performing a learning cycle, and generating useful files for taking the device to production.
Older products such as bq20xxx and bq30xxx are not supported in bqStudio. Download the specific evaluation software from the appropriate product page.