BQ20Z80中文资料采用 Impedance Track™ 技术且符合 SBS 1.1 标准的电量监测计，可与 bq29312 一起使用数据手册TI规格书

描述 Description

The bq20z80 SBS-compliant gas gauge IC, incorporating patented Impedance Track™ technology, is designed for battery-pack or in-system installation. The bq20z80 measures and maintains an accurate record of available charge in Li-ion or Li-polymer batteries using its integrated high-performance analog peripherals. The bq20z80 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 bq29312A 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
• Works With the TI bq29312A Analog Front-End (AFE) Protection IC to Provide Complete Pack Electronics Solution
• Integrated Time Base Removes Need for External Crystal with Optional Crystal Input
• Based on a Powerful Low-Power RISC CPU Core With High-Performance Peripherals
• Measures Charge Flow Using a High-Resolution, 16-Bit Integrating Delta-Sigma Converter
• Self-Calibrating
• Uses 16-Bit Delta-Sigma Converter for Accurate Voltage and Temperature Measurements
• Optional Pulse Charging Feature for Improved Charge Times
• Supports SHA-1 Authentication
• 38-Pin TSSOP (DBT)
• Notebook PCs
• Portable Instrumentation

Impedance Track is a trademark of Texas Instruments.