BQ20Z40PWR

SBS 1.1标准的电量监测计启用了阻抗TRACK⑩科技为使用的bq29330 SBS 1.1-COMPLIANT GAS GAUGE ENABLED WITH IMPEDANCE TRACK™ TECHNOLOGY FOR USE WITH THE bq29330

DESCRIPON

The bq20z40 SBS-compliant gas gauge and protection IC, incorporating patented Impedance Track™ technology, is designed for battery-pack or in-system installation. The bq20z40 measures and maintains an accurate record of available charge in Li-ion or Li-polymer batteries using its integrated high-performance analog peripherals. The bq20z40 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. It is designed to work with the bq29330 analog front-end AFE protection IC to maximizes functionality and safety while minimizing external component count and cost in smart battery circuits.

FEATURES

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

   – Better Than 1% Error Over the Lifetime of the Battery

• 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 Ultralow Power Modes

• Full Array of Programmable Protection Features

   – Voltage, Current, and Temperature

• Satisfies JEITA Guidelines

• Added Flexibility to Handle More Complex Charging Profiles

• Lifetime Data Logging

• Supports SHA-1 Authentication

• Available in a 20-Pin TSSOP PW package

APPLICATIONS

• Notebook PCs

• Medical and Test Equipment

• Portable Instrumentation