bq2084-V143

www.ti.com RTT DBT SBS v1.1-COMPLIANT GAS GAUGE FOR USE WITH THE bq29312 bq2084-V143 SLUS732 – SEPTEMBER 2006 FEATURES Provides Accurate Measurement of Available Charge in Li-Ion and Li-Polymer Batteries Supports the Smart Battery Specification (SBS) V1.1 Integrated Time Base Removes Need for External Crystal with Optional Crystal input Works With the TI bq29312 Analog Front-End (AFE) Protection IC to Provide Complete Pack Electronics for 7.2-V, 10.8-V or 14.4-V Battery Packs With Few External Components Based on a Powerful Low-Power RISC CPU Core With High-Performance Peripherals Integrated Flash Memory Eliminates the Need for External Configuration EEPROM Uses 16-Bit Delta Sigma Converter for Accurate Voltage and Temperature Measurements Measures Charge Flow Using a High Resolution 16-Bit Integrating Converter – Better Than 0.65-nVh of Resolution – Self-Calibrating – Offset Error Less Than 1-µV Programmable Cell Modeling for Maximum Battery Fuel Gauge Accuracy Drives 3-, 4-, or 5-Segment LED Display for Remaining Capacity Indication Available in a 38-Pin TSSOP (DBT) Package APPLICATIONS Notebook PCs Medical and Test Equipment Portable Instrumentation DESCRIPTION The bq2084-V143 SBS-compliant gas gauge IC for battery pack or in-system installation maintains an accurate record of available charge in Li-ion or Li-polymer batteries. The bq2084-V143 monitors capacity and other critical parameters of the battery pack and reports the information t...