BQ34Z110EVM - 

Evaluation Module for Battery Fuel Gauge with Impedance Track for Lead Acid Batteries

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Product Overview

The BQ34Z110EVM is an evaluation module for BQ34Z110 device. The BQ34Z110 is a fuel gauge solution that works independently of battery series cell configurations. Batteries from 4V to 64V can be supported through an external voltage translation circuit that can be controlled automatically to reduce system power consumption. The BQ34Z110 device provides several interface options, including an I2C slave, an HDQ slave, one or four direct LEDs and an alert output pin. Additionally, the BQ34Z110 provides support for an external port expander for more than four LEDs.
  • Link to software allowing data logging for system analysis
  • Capacity estimation using patented impedance
  • Aging compensation
  • Self discharge compensation
  • Supports battery capacities above 65Ahr
  • Supports charge and discharge currents above 32A
  • External NTC thermistor support
  • Supports two wire I2CTM and HDdQ single wire communication interfaces with host system
  • SHA-1, HMAC authentication
  • Reduced power modes


Power Management, Medical, Sensing & Instrumentation, Consumer Electronics, Portable Devices, Automotive


BQ34Z110 evaluation module, Documentation.


Applying a voltage higher than 5V when jumpers are configured for <= 5V operation is very likely to damage the IC.


This device has limited built in ESD protection. The leads should be shorted together or device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

Product Information

Texas Instruments
Power Management - Battery
Fuel Gauge
Eval Board BQ34Z110, Documentation
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