BQ34Z100PWR-G1

1 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

2 Applications

• Light Electric Vehicles

• Power Tools

• Medical Instrumentation

• Uninterruptible Power Supplies (UPS)

• Mobile Radios

3 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.

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