The Texas Instruments BQ34Z100 is a fuel gauge solution that works independently of battery series-cell configurations, and supports a wide range of Li-ion and LiFePO4 battery chemistries. Batteries from 3 V to 65 V can be supported through an external voltage translation circuit that can be controlled automatically to reduce system power consumption.
The BQ34Z100 device provides several interface options, including an I2C slave, an HDQ slave, one or four direct LEDs, and an ALERT output pin. Additionally, the BQ34Z100 provides support for an external port expander for more than four LEDs.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | BQ34Z100 Wide Range Fuel Gauge with Impedance Track™ Technology datasheet (Rev. C) | PDF | HTML | May 24, 2021 |
| * | Errata | bq34z100 Errata | Jan 29, 2013 | |
| Technical article | Redefining battery accuracy: How the Dynamic Z-Track™ algorithm predicts unpredictable battery loads | PDF | HTML | Jun 28, 2025 | |
| Application note | Battery Gauging Algorithm Comparison | PDF | HTML | Dec 4, 2023 | |
| Certificate | BQ34Z100EVM EU RoHS Declaration of Conformity (DoC) (Rev. A) | Jan 24, 2022 | ||
| Application note | Simple Guide to Chemical ID Selection Tool (GPC) (Rev. A) | PDF | HTML | Jun 5, 2018 | |
| Application note | Going to Production with bq34z1XX | Nov 13, 2012 | ||
| Application note | Configuring the bq34z100 Data Flash | Nov 13, 2012 |
For additional terms or required resources, click any title below to view the detail page where available.
This evaluation module (bq34z100EVM) is a complete evaluation system for the bq34z100 wide range fuel gauge for lithium ion chemistries when combined with an EV2400 USB adapter and Windows™-based PC software downloadable from the TI.com website. The circuit module includes one bq34z100 (...)
BQ34Z100-DEVICE-FW is a firmware-only release that can be flashed onto any existing BQ34Z100 hardware ( such as the BQ34Z100, BQ34Z100-R1, BQ34Z100-R2, … device ). The firmware incorporates the patented Impedance Track™ technology to create a pack-based solution for Li-ion, PbA, NiMH, and NiCd (...)
BQ-BATTERY-PROGRAMMER-SW software development kit (SDK) is a collection of robust software command line tools that assist with the process of programming, testing, or assembling packs that use TI Battery management products. The executables in this software work with the MKST-3P-ALT-EV2300 MKS (...)
Hi-cell bqProduction offers a full suite of robust tools to assist with the process of configuring, calibrating, manufacturing and tracking printed circuit boards utilizing TI's battery management products. This includes features that allow writing a golden image followed by different types of (...)
BQ-BATTERY-PROGRAMMER-SW software development kit (SDK) is a collection of robust software command line tools that assist with the process of programming, testing, or assembling packs that use TI Battery management products. The executables in this software work with the MKST-3P-ALT-EV2300 MKS (...)
BQ-BATTERY-PROGRAMMER-SW software development kit (SDK) is a collection of robust software command line tools that assist with the process of programming, testing, or assembling packs that use TI Battery management products. The executables in this software work with the MKST-3P-ALT-EV2300 MKS (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| TSSOP (PW) | 14 | Ultra Librarian |
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