bq2040 Datasheet - Benchmarq

bq2040 Gas Gauge

The bq2040 Gas Gauge IC With SMBus Interface is intended for battery-pack or in-system installation to maintain an accurate record of available battery charge. The bq2040 directly supports capacity monitoring for NiCd, NiMH, and LiIon battery chemistries. The bq2040 uses the System Management Bus v1.

bq2040 Features

* ® Provides accurate measurement of available charge in NiCd, NiMH, and Li-Ion batteries ® Supports SBS v1.0 data set and two-wire interface ® Monitors charge FET in Li-Ion pack protection circuit ® Designed for battery pack integration - Low operating current - Complete circuit can fit on less than

bq2040-Benchmarq.pdf