Texas Instruments BQ20Z75DBTR

Description
The bq20z75 is a single-IC solution for battery-pack or in-system installation. It measures and maintains an accurate record of available charge in Li-ion or Li-polymer batteries using its integrated high-performance analog peripherals. It monitors capacity change, battery impedance, open-circuit voltage, and other critical parameters of the battery pack 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 bq20z75 maximizes functionality, safety, and minimizes external component count, cost, and size in smart battery circuits.

Features
Not Recommended for New Designs
SBS 1.1-compliant gas gauge and protection-enabled IC with Impedance Track™
Better than 1% error over lifetime of the battery
Instant accuracy - no learning cycle required
Supports the Smart Battery Specification SBS V1.1
Flexible configuration for 2 to 4 series Li-Ion 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
Small 38-pin TSSOP (DBT) package

Applications
Notebook PCs
Medical and Test Equipment
Portable Instrumentation