Product details

Cell chemistry Lead Acid, Li-Ion/Li-Polymer, LiFePO4, NiCd, NiMH Number of series cells 2-4 Cells, >4 Cells, Single Cell Communication interface HDQ, I2C Battery capacity (Min) (mAh) 100 Battery capacity (Max) (mAh) 29000 Implementation Pack, System External capacity indication LED Features Impedance Track™ algorithm, SHA-1 Authentication Operating temperature range (C) -40 to 85 Cell balancing
Cell chemistry Lead Acid, Li-Ion/Li-Polymer, LiFePO4, NiCd, NiMH Number of series cells 2-4 Cells, >4 Cells, Single Cell Communication interface HDQ, I2C Battery capacity (Min) (mAh) 100 Battery capacity (Max) (mAh) 29000 Implementation Pack, System External capacity indication LED Features Impedance Track™ algorithm, SHA-1 Authentication Operating temperature range (C) -40 to 85 Cell balancing
TSSOP (PW) 14 32 mm² 5 x 6.4
  • Supports Li-ion, LiFePO4, PbA, NiMH, and NiCd chemistries
  • Capacity estimation using patented Impedance Track™ technology for batteries from 3 V to 65 V
    • Aging compensation
    • Self-discharge compensation
  • Supports battery capacities up to 29 Ah with standard configuration options
  • Supports charge and discharge currents up to 32 A with standard configuration options
  • 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: < 145-µA average
    • SLEEP: < 84-µA average
    • FULL SLEEP: < 30-µA average
  • Package: 14-pin TSSOP
  • Supports Li-ion, LiFePO4, PbA, NiMH, and NiCd chemistries
  • Capacity estimation using patented Impedance Track™ technology for batteries from 3 V to 65 V
    • Aging compensation
    • Self-discharge compensation
  • Supports battery capacities up to 29 Ah with standard configuration options
  • Supports charge and discharge currents up to 32 A with standard configuration options
  • 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: < 145-µA average
    • SLEEP: < 84-µA average
    • FULL SLEEP: < 30-µA average
  • Package: 14-pin TSSOP

The BQ34Z100-G1 device is an Impedance Track™ fuel gauge for Li-ion, PbA, NiMH, and NiCd batteries, and works independently of battery series-cell configurations. Batteries from 3 V to 65 V can be easily supported through an external voltage translation circuit that is controlled automatically to reduce system power consumption.

The BQ34Z100-G1 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-G1 provides support for an external port expander for more than four LEDs.

The BQ34Z100-G1 device is an Impedance Track™ fuel gauge for Li-ion, PbA, NiMH, and NiCd batteries, and works independently of battery series-cell configurations. Batteries from 3 V to 65 V can be easily supported through an external voltage translation circuit that is controlled automatically to reduce system power consumption.

The BQ34Z100-G1 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-G1 provides support for an external port expander for more than four LEDs.

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Technical documentation

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Type Title Date
* Data sheet BQ34Z100-G1 Wide Range Fuel Gauge with Impedance Track™ Technology datasheet (Rev. D) PDF | HTML 15 Apr 2021
* User guide BQ34Z100-G1 Technical Reference Manual (Rev. A) PDF | HTML 11 May 2022
EVM User's guide bq34z100EVM Wide Range Impedance Track Enabled Battery Fuel Gauge (Rev. B) 16 Apr 2021
Application note BQ34Z100 to BQ34Z100-G1 Change List 15 Apr 2021
Technical article Power to the pedal: Achieving longer-lasting 13S, 48-V lithium-ion battery packs for e-bikes and e-scooters 07 Mar 2019
Technical article Searching for the newest innovations in power? Find them at APEC 09 Feb 2019
User guide bq34z100-G1 Technical Reference Manual 26 Jun 2018
Application note Simple Guide to Chemical ID Selection Tool (GPC) (Rev. A) 05 Jun 2018
User guide Quickstart Guide for the bq34z100-G1 PDF | HTML 20 Apr 2018
Application note Gauge Communication 12 Jan 2017
Application note Using I2C Communications With the bq34110 bq35100 and bq34z100-G1 Series of Gas PDF | HTML 09 Nov 2016
Application note bq34z100-G1 High Cell Count and High Capacity Applications 29 Sep 2015
Technical article Multiple battery chemistries, single device! 16 Jun 2015
Application note Configuring the bq34z100 Data Flash 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 | HTML
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 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-G1 Multi-chemistry Impedance Track™ standalone fuel gauge | battery gas gauge BQ34Z100 1-s to 16-s Impedance Track™ fuel gauge | battery gas gauge
Hardware development
Evaluation board
BQ34Z100EVM Bq34z100EVM 1s to 16s Impedance Track Fuel Gauge Battery Evaluation Module | Gas Gauge Battery
Download options
Application software & framework

BQSTUDIO-TEST Battery Management Studio (bqStudio) Software – Beta version downloads

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 (...)

Supported products & hardware

Supported products & hardware

Products
Battery monitors & balancers
BQ769142 3-s to 14-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4 battery BQ76942 3-series to 10-series multicell battery monitor and protector BQ76952 3-s to 16-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4
Battery charger ICs
BQ24800 SMBus 1-4 cell Buck battery charge controller to support hybrid power boost and battery boost mode BQ25720 SMBus 1- to 4-cell NVDC buck-boost battery charge controller with power path and USB-C® PD OTG BQ25723 I²C 1-4 cell NVDC buck-boost battery charge controller with power path and USB-C® PD OTG BQ25731 I2C 1-5 cell NVDC buck-boost battery charge controller with USB type-C PD support BQ25790 Integrated, NVDC, 5-A 1-cell to 4-cell switch-mode buck-boost battery charger BQ25792 I2C controlled, 5-A, 1-4 cell buck-boost charger with dual-input selector and USB PD 3.0 OTG output
Battery fuel gauges
BQ27220 Single cell pack/system-side CEDV battery fuel (gas) gauge w/pre-programmed chemistry profiles BQ27320 Single cell pack/System-side CEDV battery fuel (gas) gauge BQ27425-G1 System-side Impedance Track™; fuel gauge with direct battery connection | gas gauge battery BQ27425-G2A System-side Impedance Track™; fuel gauge for LiCoO2 battery BQ27425-G2B System-side Impedance Track™; fuel gauge LiMn2O4 battery BQ27510-G3 System-side Impedance-Track fuel gauge that provides 32 bytes of user-programmable data Flash memory BQ27520-G4 System side Impedance Track™ fuel gauge with integrated LDO. BQ27530-G1 System-side Impedance-Track fuel (gas) gauge with direct battery connection BQ27531-G1 Battery management unit Impedance Track™ fuel (gas) gauge for bq2419x charger controller BQ27532-G1 Battery management unit Impedance Track™ fuel gauge for bq2425x charger BQ27541-G1 Pack-side Impedance Track™ battery fuel gauge with integrated LDO BQ27541-V200 Single cell Li-ion battery fuel gauge for battery pack Integration; FW upgrade to BQ27541 BQ27542-G1 Single cell Impedance Track™ pack side fuel gauge with SON package BQ27545-G1 Single cell, pack side, Impedance Track™ fuel gauge BQ27546-G1 Single cell Impedance Track™ pack side fuel gauge with DSBGA package BQ27621-G1 System-side fuel gauge with Dynamic Voltage Correlation, battery gas gauge BQ27741-G1 Pack-side Impedance Track™(tm) fuel (gas) gauge with integrated protector BQ27742-G1 Single cell Li-ion battery fuel gauge with integrated protection | battery gas gauge BQ27Z561 Impedance Track™ integrated circuit gas gauge solution for 1-series BQ27Z746 Pack-side, single-cell Impedance Track™ technology fuel gauge with integrated protector BQ28Z610 Battery fuel gauge with integrated protector for 1-2 series packs BQ34110 Multi-chemistry high-cell Count battery fuel gauge with integrated rarely discharged module BQ34210-Q1 Automotive Qualified Single cell system-side CEDV fuel gauge BQ34Z100-G1 Multi-chemistry Impedance Track™ standalone fuel gauge | battery gas gauge BQ35100 Battery fuel gauge for non-rechargeable batteries (lithium primary) and end-of-service monitor BQ4050 1-4 series CEDV battery fuel (gas) gauge BQ40Z50 1-4 series Li-ion battery pack manager | battery fuel (gas) gauge BQ40Z50-R1 1-4 series Li-ion battery pack manager supporting Turbo Mode 1.0 BQ40Z50-R2 1-4 series Li-ion battery pack manager supporting Turbo Mode 2.0 BQ40Z60 Complete multi-cell battery manager | battery fuel (gas) gauge BQ40Z80 2-s to 6-s battery pack manager with Impedance Track™ gas gauging BQ78350 Companion CEDV Fuel Gauge Battery Management Controller for bq76940 Monitor Family BQ78350-R1 CEDV li-ion gas gauge and battery management controller BQ78Z100 Impedance Track™ battery fuel (gas) gauge for 1-series to 2-series
Hardware development
MKST-3P-ALT-EV2300 MKS Technology alternative for EV2300 communications transceiver
Software
BQ40Z50-R3-DEVICE-FW BQ40Z50-R3 device firmware: 1-4 series Li-ion battery pack manager | battery fuel (gas) gauge
Download options
Application software & framework

BQSTUDIO-STABLE Battery Management Studio (bqStudio) Software – stable version downloads for bq series of TI battery fuel gauges

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 (...)

Supported products & hardware

Supported products & hardware

Products
Battery monitors & balancers
BQ76942 3-series to 10-series multicell battery monitor and protector BQ76952 3-s to 16-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4
Battery charger ICs
BQ24800 SMBus 1-4 cell Buck battery charge controller to support hybrid power boost and battery boost mode BQ25720 SMBus 1- to 4-cell NVDC buck-boost battery charge controller with power path and USB-C® PD OTG BQ25723 I²C 1-4 cell NVDC buck-boost battery charge controller with power path and USB-C® PD OTG BQ25731 I2C 1-5 cell NVDC buck-boost battery charge controller with USB type-C PD support BQ25790 Integrated, NVDC, 5-A 1-cell to 4-cell switch-mode buck-boost battery charger BQ25792 I2C controlled, 5-A, 1-4 cell buck-boost charger with dual-input selector and USB PD 3.0 OTG output
Battery fuel gauges
BQ27220 Single cell pack/system-side CEDV battery fuel (gas) gauge w/pre-programmed chemistry profiles BQ27320 Single cell pack/System-side CEDV battery fuel (gas) gauge BQ27425-G1 System-side Impedance Track™; fuel gauge with direct battery connection | gas gauge battery BQ27425-G2A System-side Impedance Track™; fuel gauge for LiCoO2 battery BQ27425-G2B System-side Impedance Track™; fuel gauge LiMn2O4 battery BQ27510-G3 System-side Impedance-Track fuel gauge that provides 32 bytes of user-programmable data Flash memory BQ27520-G4 System side Impedance Track™ fuel gauge with integrated LDO. BQ27530-G1 System-side Impedance-Track fuel (gas) gauge with direct battery connection BQ27531-G1 Battery management unit Impedance Track™ fuel (gas) gauge for bq2419x charger controller BQ27532-G1 Battery management unit Impedance Track™ fuel gauge for bq2425x charger BQ27541-G1 Pack-side Impedance Track™ battery fuel gauge with integrated LDO BQ27541-V200 Single cell Li-ion battery fuel gauge for battery pack Integration; FW upgrade to BQ27541 BQ27542-G1 Single cell Impedance Track™ pack side fuel gauge with SON package BQ27545-G1 Single cell, pack side, Impedance Track™ fuel gauge BQ27546-G1 Single cell Impedance Track™ pack side fuel gauge with DSBGA package BQ27621-G1 System-side fuel gauge with Dynamic Voltage Correlation, battery gas gauge BQ27741-G1 Pack-side Impedance Track™(tm) fuel (gas) gauge with integrated protector BQ27742-G1 Single cell Li-ion battery fuel gauge with integrated protection | battery gas gauge BQ27Z561 Impedance Track™ integrated circuit gas gauge solution for 1-series BQ28Z610 Battery fuel gauge with integrated protector for 1-2 series packs BQ34110 Multi-chemistry high-cell Count battery fuel gauge with integrated rarely discharged module BQ34210-Q1 Automotive Qualified Single cell system-side CEDV fuel gauge BQ34Z100-G1 Multi-chemistry Impedance Track™ standalone fuel gauge | battery gas gauge BQ35100 Battery fuel gauge for non-rechargeable batteries (lithium primary) and end-of-service monitor BQ4050 1-4 series CEDV battery fuel (gas) gauge BQ40Z50 1-4 series Li-ion battery pack manager | battery fuel (gas) gauge BQ40Z50-R1 1-4 series Li-ion battery pack manager supporting Turbo Mode 1.0 BQ40Z50-R2 1-4 series Li-ion battery pack manager supporting Turbo Mode 2.0 BQ40Z60 Complete multi-cell battery manager | battery fuel (gas) gauge BQ40Z80 2-s to 6-s battery pack manager with Impedance Track™ gas gauging BQ78350 Companion CEDV Fuel Gauge Battery Management Controller for bq76940 Monitor Family BQ78350-R1 CEDV li-ion gas gauge and battery management controller BQ78Z100 Impedance Track™ battery fuel (gas) gauge for 1-series to 2-series
Software
BQ40Z50-R3-DEVICE-FW BQ40Z50-R3 device firmware: 1-4 series Li-ion battery pack manager | battery fuel (gas) gauge
Download options
Application software & framework

GPCCHEM — Gauging Parameter Calculator: Match chemistry for Impedance Track gauges

GPC Chemistry ID matching for Impedance Track (IT) algorithm gas gauges (Find closest chemistry match) must be done before Optimizing room temperature or low temperature performance.

Gauging Parameter Calculator Chemistry ID matching for Impedance track gas gauges (GPCCHEM) is a math calculation (...)

Application software & framework

GPCRA0 — Gauging Parameter Calculator: Optimize room temperature performance for Impedance Track gauges

Gauging Parameter Calculator – Optimize room temperature performance for Impedance track gas gauges (GPCRA0) / Golden GG Maker is a math calculation tool that helps the battery designer to refine the Impedance Track battery gauge parameters for a given battery profile. It provides optimized (...)
Support software

bq34z100-G1 Device Firmware

SLUC580.ZIP (4170 KB)
lock = Requires export approval (1 minute)
Reference designs

TIDA-010030 — Accurate gauging and 50-μA standby current, 13-S, 48-V li-ion battery pack reference design

This reference design is a low standby and ship mode current consumption and high SOC gauging accuracy 13S, 48-V Li-ion battery pack design. It monitors each cell voltage, pack current and temperature with high accuracy and protects the Li-ion battery pack against overvoltage, undervoltage, over (...)
Schematic: PDF
Package Pins Download
TSSOP (PW) 14 View options

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
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  • Qualification summary
  • Ongoing reliability monitoring

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