bq2040
Features
® Provides accurate measurement of available charge in Ni Cd, Ni MH, 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
- plete circuit can fit on less than ¾ square inch of PCB space
® Supports SBS charge control mands for Ni Cd, Ni MH, and Li-Ion
® Drives a four-segment LED display for remaining capacity indication
® 16-pin narrow SOIC
General Description
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 Ni Cd, Ni MH, and Li Ion battery chemistries.
The bq2040 uses the System Management Bus v1.0 (SMBus) protocol and supports the Smart Battery Data (SBData) mands. The bq2040 also supports the SBData charge control functions. Battery state-of-charge, remaining capacity, remaining...
