Gas Gauge Li-Ion/Li-Pol 0V to 25V 44-Pin TSSOP T/R

The bq20z95 SBS-compliant gas gauge and protection IC is a single IC solutiondesigned for battery-pack or in-system installation. The bq20z95 measures andmaintains an accurate record of available charge in Li-Ion or Li-Polymerbatteries using its integrated high-performance analog peripherals, monitorscapacity change, battery impedance, open-circuit voltage, and other criticalparameters of the battery pack as well and reports the information to the systemhost controller over a serial-communication bus. Together with the integratedanalog front-end (AFE) short-circuit and overload protection, the bq20z95maximizes functionality and safety while minimizing external component count,cost, and size in smart battery circuits. The implemented Impedance Track gas gauging technology continuously analyzesthe battery impedance, resulting in superior gas-gauging accuracy. This enablesremaining capacity to be calculated with discharge rate, temperature, and cellaging all accounted for during each stage of every cycle with highaccuracy.

Next Generation Patented Impedance Track Technology Accurately Measures
Available Charge in Li-Ion 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-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

Complete Battery Protection and Gas Gauge Solution in One Package

Small 44-Pin TSSOP (DBT) Package