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BQ34Z100-G1
  • BQ34Z100-G1
  • BQ34Z100-G1

BQ34Z100-G1

ACTIVE

Multi-chemistry Impedance Track™ standalone fuel gauge | battery gas gauge

Texas Instruments BQ34Z100-G1 Product Info

1 April 2026 1

Parameters

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)

32000

Implementation

Pack, System

External capacity indication

LED

Features

Impedance Track™ algorithm, SHA-1 Authentication

Operating temperature range (°C)

-40 to 85

Rating

Catalog

Package

TSSOP (PW)-14-32 mm² 5 x 6.4

Features

  • 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

Description

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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