BQ34Z651DBTR

采用 Impedance Track™ 技术且符合 SBS 1.1 标准的电量监测计，设计用于低温环境 44-TSSOP -40 to 85

DESCRIPON

The bq34z651 SBS-compliant gas gauge and protection IC, incorporating patented Impedance Track™ technology, is a single IC solution designed for battery-pack or in-system installation. The bq34z651 measures and maintains an accurate record of available charge in Li-Ion or Li-Polymer batteries using its integrated high-performance analog peripherals. The bq34z651 monitors capacity change, battery impedance, open-circuit voltage, and other critical parameters of the battery pack, which 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 bq34z651 maximizes functionality and safety while minimizing external component count, cost, and size 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-Series to 4-Series Li-Ion and Li-Polymer Cells

• Battery Temperature Heater Control

• 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

• Drives 3-, 4-, and 5-Segment LED Display for Battery-Pack Conditions

• Supports SHA-1 Authentication

• Complete Battery Protection and Gas Gauge Solution in One Package

• Available in a 44-Pin TSSOP DBT package

APPLICATIONS

• Notebook PCs

• Medical and Test Equipment

• Portable Instrumentation