DESCRIPTION
●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
