bq28z610 Battery Fuel Gauge

Product Highlights > bq28z610 Battery Fuel Gauge

            bq28z610 Battery Fuel Gauge
                    TI's bq28z610 Impedance Track™ gas gauges and protection solutions for 1- to 2-series cell Li-ion battery packs
    

Image of TI's bq28z610 Gas Guage The Texas Instruments bq28z610 device is a highly integrated, accurate, 1- to 2-series cell gas gauge and protection solution, enabling autonomous charger control and cell balancing. The bq28z610 device enables autonomous charge control through master mode I²C broadcasts of charging current and voltage information, eliminating software overhead that is typically incurred by the system’s host controller.

The bq28z610 device provides a fully integrated pack-based solution with a Flash programmable custom reduced instruction-set CPU (RISC), safety protection, and authentication for 1- to 2-series cell Li-ion and Li-polymer battery packs.

Features

Autonomous battery charging control using dedicated master mode I²C interface
Cell balancing with internal bypass to optimize battery health
High-side protection N-CH FET drive allows serial bus communication during fault conditions
Programmable protection levels for voltage, current, and temperature
Supports down to 1 mΩ current sense resistor while capable of 1 mA current measurement
Supports battery trip point (BTP) function for Windows integration

Analog front end with two independent ADCs
- Support for simultaneous current and voltage sampling
- High-accuracy Coulomb counter with input offset error < 1 µV (typical)
SHA-1 authentication responder for increased battery pack security
400 kHz I²C bus communications interface for high-speed programming and data access