Gas Gauge/Protection Li-Ion/Li-Pol 100mA 0V to 25V 38-Pin TSSOP Tube

The bq20z75 SBS-compliant gas gauge and protection IC is a single IC solution designed for battery-pack or in-system installation. The bq20z75 measures andmaintains an accurate record of available charge in Li-ion or Li-polymer batteries using its integrated high-performance analog peripherals, 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 bq20z75 maximizes functionality, safety and minimize external component count, cost and size in smart battery circuits.The implemented Impedance Track 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.

Next Generation Patented Impedance Track™ Technology accurately Measures Available Charge in Li-Ion and Li-Polymer Batteries

• Better than 1% Error Over Lifetimeof 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