BQ20Z80DBT

SBS 1.1标准的电量监测计启用Impedance Track技术为使用的bq29312A SBS 1.1-COMPLIANT GAS GAUGE ENABLED WITH IMPEDANCE TRACK TECHNOLOGY FOR USE WITH THE bq29312A

DESCRIPON

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.

FEATURES

• Patented Impedance Track™ Technology

  Accurately Measures Available Charge in Li-Ion and Li-Polymer Batteries

• Better than 1% Error Over Lifetime of the Battery

• Instant Accuracy – No Learning Cycle Required

• Supports the Smart Battery Specification SBS V1.1

• Works With the TI bq29312A Analog

   Front-End AFE Protection IC to Provide

   Complete Pack Electronics Solution

• Full Array of Programmable Voltage, Current, and Temperature Protection Features

• Integrated Time Base Removes Need for External Crystal with Optional Crystal Input

• Electronics for 7.2-V, 10.8-V or 14.4-V Battery Packs With Few External Components

• Based on a Powerful Low-Power RISC CPU Core With High-Performance Peripherals

• Integrated Field Programmable FLASH Memory Eliminates the Need for External Configuration Memory

• Measures Charge Flow Using a High-Resolution, 16-Bit Integrating Delta-Sigma Converter

   – Better Than 0.65-nVh of Resolution

   – Self-Calibrating

   – Offset Error Less Than 1-µV

• Uses 16-Bit Delta-Sigma Converter for Accurate Voltage and Temperature Measurements

• Extensive Data Reporting Options For Improved System Interaction

• Optional Pulse Charging Feature for Improved Charge Times

• Drives 3-, 4- or 5-Segment LED Display for Remaining Capacity Indication

APPLICATIONS

• 38-Pin TSSOP DBT

• Notebook PCs

• Medical and Test Equipment

• Portable Instrumentation