The bq20z65-R1 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 bq20z65-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 bq20z65-R1 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 bq20z65-R1 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. This enables remaining capacity to be calculated with discharge rate, temperature, and cell aging all accounted for during each stage of every cycle with high 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 to 4 Series Li-Ion and Li-Polymer Cells
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