A newer version of this product is available

open-in-new Compare products
Drop-in replacement with upgraded functionality to the compared device.
NEW BQ34Z100-R2 ACTIVE Multi-chemistry Impedance Track™ stand-alone fuel gauge Supports larger size battery applications and offers better support for PbA and NiMH chemistries

Product details

Cell chemistry Li-Ion/Li-Polymer, LiFePO4 Number of series cells 2-4 Cells, >4 Cells, Single Cell Communication interface HDQ, I2C Battery capacity (Min) (mAh) 800 Battery capacity (Max) (mAh) 320000 Implementation Pack External capacity indication LED Features Impedance Track™ algorithm Operating temperature range (C) -40 to 85
Cell chemistry Li-Ion/Li-Polymer, LiFePO4 Number of series cells 2-4 Cells, >4 Cells, Single Cell Communication interface HDQ, I2C Battery capacity (Min) (mAh) 800 Battery capacity (Max) (mAh) 320000 Implementation Pack External capacity indication LED Features Impedance Track™ algorithm Operating temperature range (C) -40 to 85
TSSOP (PW) 14 32 mm² 5 x 6.4
  • Supports Li-ion and LiFePO4 chemistries
  • Capacity estimation using patented Impedance Track™ technology for batteries from 3 V to 65 V
    • Aging compensation
    • Self-discharge compensation
  • Supports battery capacities Above 65 Ah
  • Supports charge and discharge currents Above 32 A
  • External NTC thermistor support
  • Supports two-wire I2C and HDQ single-wire communication interfaces with host system
  • SHA-1/HMAC Authentication
  • One- or four-LED direct display control
  • Five-LED and higher display through port expander
  • Reduced power modes (typical battery pack operating range conditions)
    • NORMAL operation: < 140-µA average
    • SLEEP: < 64-µA average
    • FULL SLEEP: < 19 -µA average
  • Package: 14-pin TSSOP
  • Supports Li-ion and LiFePO4 chemistries
  • Capacity estimation using patented Impedance Track™ technology for batteries from 3 V to 65 V
    • Aging compensation
    • Self-discharge compensation
  • Supports battery capacities Above 65 Ah
  • Supports charge and discharge currents Above 32 A
  • External NTC thermistor support
  • Supports two-wire I2C and HDQ single-wire communication interfaces with host system
  • SHA-1/HMAC Authentication
  • One- or four-LED direct display control
  • Five-LED and higher display through port expander
  • Reduced power modes (typical battery pack operating range conditions)
    • NORMAL operation: < 140-µA average
    • SLEEP: < 64-µA average
    • FULL SLEEP: < 19 -µA average
  • Package: 14-pin TSSOP

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.

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.

Download

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 10
Type Title Date
* Data sheet BQ34Z100 Wide Range Fuel Gauge with Impedance Track™ Technology datasheet (Rev. C) PDF | HTML 24 May 2021
* Errata bq34z100 Errata 29 Jan 2013
Certificate BQ34Z100EVM EU RoHS Declaration of Conformity (DoC) (Rev. A) 24 Jan 2022
EVM User's guide bq34z100EVM Wide Range Impedance Track Enabled Battery Fuel Gauge (Rev. B) 16 Apr 2021
Application note Simple Guide to Chemical ID Selection Tool (GPC) (Rev. A) 05 Jun 2018
Technical article How to choose a multicell gauge 16 Dec 2016
Technical article What’s next for inverter power back-up systems? 04 Jul 2014
Technical article Giving More Life to LiFePO4 Batteries 13 Sep 2013
Application note Configuring the bq34z100 Data Flash 13 Nov 2012
Application note Going to Production with bq34z1XX 13 Nov 2012

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

BQ34Z100EVM — Bq34z100EVM 1s to 16s Impedance Track Fuel Gauge Battery Evaluation Module | Gas Gauge Battery

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 (...)

User guide: PDF
Not available on TI.com
Software programming tool

BQ-PRODUCTION-HI-CELL-SW Production software for hi-cell count battery fuel (gas) gauges

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 (...)

Supported products & hardware

Supported products & hardware

Products
Battery fuel gauges
BQ34Z100 1-s to 16-s Impedance Track™ fuel gauge | battery gas gauge BQ34Z100-G1 Multi-chemistry Impedance Track™ standalone fuel gauge | battery gas gauge BQ34Z100-R2 Multi-chemistry Impedance Track™ stand-alone fuel gauge BQ78350 Companion CEDV Fuel Gauge Battery Management Controller for bq76940 Monitor Family BQ78350-R1 CEDV li-ion gas gauge and battery management controller BQ78350-R1A CEDV li-ion gas gauge and battery management controller BQ34110 Multi-chemistry high-cell Count battery fuel gauge with integrated rarely discharged module
Hardware development
Evaluation board
BQ34Z100EVM Bq34z100EVM 1s to 16s Impedance Track Fuel Gauge Battery Evaluation Module | Gas Gauge Battery MKST-3P-ALT-EV2300 MKS Technology alternative for EV2300 communications transceiver BQ76920EVM

BQ76920 evaluation board with BQ78350 

BQ76930EVM

BQ76930 evaluation board with BQ78350

BQ34110EVM-796 bq34110 Multi-Chemistry CEDV Battery Gas Gauge for Rarely Discharged Applications Evaluation Module
Software
Application software & framework
BQ-HI-PRODUCTION Production Application Software for Hi-Cell Count Battery Fuel (Gas) Gauges BQSTUDIO Battery Management Studio (bqStudio) Software BQPRODUCTION Production tool for fourth generation multicell battery fuel (gas) gauges BQPRODUCTION-SINGLECELL Production Software for Single Cell Battery Fuel (Gas) Gauges
Download options
Support software

bq34z100 Evaluation Software (Rev. A)

SLUC366A.ZIP (54775 KB)
CAD/CAE symbol

Mathcad Chemistry Selection Tool (Rev. DJ)

SLUC138DJ.ZIP (6840 KB)
Package Pins Download
TSSOP (PW) 14 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos