BQ34Z653 Datasheet PDF – Gas Gauge and Protection IC

Part Number: BQ34Z653

Function: SBS 1.1-compliant Fuel Gauge and Protector

Package TSSOP 44 Pin ( DBT ) Type

Manufacturer: Texas Instruments


BQ34Z653 datasheet


This is SBS 1.1-Compliant Gas Gauge and Protection Enabled with Impedance Track with External Battery Heater Control and LCD Display.

The bq34z653 SBS-compliant gas gauge and protection IC, incorporating patented Impedance Track  technology, is a single IC solution designed for battery-pack or in-system installation.

The bq34z653 measures and maintains an accurate record of available charge in Li-Ion or Li-Polymer batteries using its integrated high-performance analog peripherals. The bq34z653 monitors capacity change, battery impedance, open-circuit voltage, and other critical parameters of the battery pack, which reports the information to the system host controller over a serial-communication bus.

Together with the integrated analog front-end (AFE) short-circuit and overload protection, the bq34z653 maximizes functionality and safety while minimizing external component count, cost, and size in smart battery circuits.


1. Flexible Configuration for 2-Series to 4-Series Li-Ion and Li-Polymer Cells

2. Battery Temperature Heater Control

3. Powerful 8-Bit RISC CPU with Ultralow Power Modes

4. Full Array of Programmable Protection Features
– Voltage, Current, and Temperature

5. Satisfies JEITA Guidelines

6. Added Flexibility to Handle More Complex Charging Profiles


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BQ34Z653 Datasheet PDF Download

BQ34Z653 pdf