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
