DESCRIPTION
The bq20z95 SBS-compliant gas gauge and protection IC is a single IC solution designed for battery-pack or in-system instalation. The bq20z95measures and maintains an accurate record of available charge in Li-lon or Li-Polymer batteries using its integrated high-performance analogperipherals, monitors capacity change, battery impedance, open-circuit voltage, and other critical parameters of the battery pack as well and reports the information to the system host controller over a serial-communication bus. Together with the integrated analog front-end (AFE) short-circuit and overload protection, the bq20z95 maximizes functionality and safety while minimizing external component count, cost, and size in smart battery circuits.The implemented Impedance TrackTw gas gauging technology continuously analyzes the battery impedance, resulting in superior gas-gauging accuracy. This enables remaining capacity to be calculated with discharge rate, temperature, and cell aging all accounted for during each stage of every cycle with high accuracy.
FEATURES
· Next Generation Patented Impedance Track TM Technology Accurately Measures Available Charge in Li-lon and Li-Polymer Batteries -Better Than 1% Error Over Lifetime of the Battery
· Supports the Smart Battery Specification SBS V1.1
· Flexible Configuration for 2-Series to 4-Series Li-lon and Li-Polymer Cells
· Powerful 8-Bit RISC CPU With Ultra-Low Power Modes
· Full Array of Programmable Protection Features -Voltage, Current, and Temperature
· Supports SHA-1 Authentication
· Complete Battery Protection and Gas Gauge Solution in One Package
· Small 44-Pin TSSOP(DBT) Package
(Picture: Pinout)
