BQ27742YZFR-G1

电池管理 SGL Cell Li-Ion Battery Fuel Gauge

* Battery Fuel Gauge and Protector for 1-Series Li-ion Applications * Microcontroller Peripheral Provides: * Precision 16-bit, High-side Coulomb Counter with Low-value Sense Resistor 5 mΩ to 20 mΩ * External and Internal Temperature Sensors for Battery Temperature Reporting * Lifetime and Current Data Logging * 64 Bytes of Non-volatile Scratch Pad Flash * SHA-1 Authentication Capability * Battery Fuel Gauging Based on Patented Impedance Track™ Technology * Models Battery Discharge Curve for Accurate Time-To-Empty Predictions * Automatically Adjusts for Aging, Self-Discharge, and Temperature- and Rate-induced Effects on Battery * Integrated High-side NMOS Protection FET Drive * Hardware-based Safety and Protection: * Overvoltage OVP * Undervoltage UVP * Overcurrent in Charge OCC * Overcurrent in Discharge OCD * Short-Circuit in Discharge SCD * I2C Format for Communication With Host System * Ultra-compact, 15-ball NanoFree Chip-scale Package CSP