BQ20Z90中文资料采用 Impedance Track™ 技术且符合 SBS 1.1 标准的电量监测计，适用于 bq29330数据手册TI规格书

描述 Description

The bq20z90 SBS-compliant gas gauge IC, incorporating patented Impedance Track™ technology, is designed for battery-pack or in-system installation. The bq20z90 measures and maintains an accurate record of available charge in Li-ion or Li-polymer batteries using its integrated high-performance analog peripherals. The bq20z90 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 maximize functionality and safety, and minimize component count and cost in smart battery circuits.The Impedance Track 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.

特性 Features

• Patented Impedance Track™ Technology Accurately Measures Available Charge in Li-Ion and Li-Polymer Batteries
• Instant Accuracy — No Learning Cycle Required
• Supports the Smart Battery Specification SBS V1.1
• Full Array of Programmable Voltage, Current, and Temperature Protection Features
• Electronics for 7.2-V, 10.8-V or 14.4-V Battery Packs With 50% Fewer External Components
• Integrated Field Programmable FLASH Memory Eliminates the Need for External Configuration Memory
• Better Than 0.65 nVh of Resolution
• Uses 16-Bit Delta-Sigma Converter for Accurate Voltage and Temperature Measurements
• Optional Pulse Charging Feature for Improved Charge Times
• Supports SHA-1 Authentication
• 30-Pin TSSOP (DBT)
• Notebook PCs
• Portable Instrumentation

IMPEDANCE TRACK is a trademark of Texas Instruments.