Texas Instruments BQ20Z80DBTRG4

Description
The bq20280 is a SBS-compliant gas gauge IC that utilizes patented Impedance Track™ technology to accurately measure available charge in Li-ion and Li-polymer batteries. It provides instant accuracy without requiring a learning cycle and supports the Smart Battery Specification SBS V1.1. The bq20280 works in conjunction with the bq29312A analog front-end (AFE) protection IC to provide a complete pack electronics solution. It offers a full array of programmable voltage, current, and temperature protection features, and integrates a time base that eliminates the need for an external crystal. The bq20280 is designed for 7.2-V, 10.8-V, or 14.4-V battery packs with minimal external components. It is based on a powerful low-power RISC CPU core with high-performance peripherals and integrates field programmable FLASH memory, eliminating the need for external configuration memory.

Features
Patented Impedance Track™ Technology
Better than 1% Error Over Battery Lifetime
Instant Accuracy - No Learning Cycle Required
Supports Smart Battery Specification SBS V1.1
Works with bq29312A Analog Front-End (AFE) Protection IC
Full Array of Programmable Voltage, Current, and Temperature Protection Features
Integrated Time Base Removes Need for External Crystal
Electronics for 7.2-V, 10.8-V, or 14.4-V Battery Packs
Based on a Powerful Low-Power RISC CPU Core
Integrated Field Programmable FLASH Memory
High-Resolution, 16-Bit Integrating Delta-Sigma Converter
Self-Calibrating Offset Error Less Than 1 μV
Accurate Voltage and Temperature Measurements
Extensive Data Reporting Options
Optional Pulse Charging Feature
Drives 3-, 4-, or 5-Segment LED Display
Supports SHA-1 Authentication
Lifetime Data Logging

Applications
Notebook PCs
Medical and Test Equipment
Portable Instrumentation