The BQ20Z655DBT-R1 is a SBS v1.1 compliant Gas Gauge with LED/LCD drive and Impedance Track™ technology designed for battery-pack or in-system installation. The BQ20Z655-R1 measures and maintains an accurate record of available charge in Li-ion or Li-polymer batteries using its integrated high-performance analog peripherals. The gauge 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, it maximizes functionality and safety while minimizing external component count, cost and size in smart battery circuits. The implemented Impedance Track™ gas gauging technology continuously analyzes the battery impedance, resulting in superior gas-gauging accuracy.
* 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 * Powerful 8-Bit RISC CPU with Ultralow Power Modes * Charge Enable (CE) Affects the Normal Operation on the Charge FET when the Battery Is in Charge/Relax Mode * 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, or 5 Segment Liquid Crystal Display and LED 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