The BQ25173 is an integrated 800-mA linear charger for 1- to 4-cell supercapacitors. Features • Input voltage up-to 40-V tolerant • Automatic Sleep mode for low power consumption – 350-nA leakage current – 2-µA input leakage current when charge disabled • Supports 1- to 4-cell supercapacitor • Supports charging supercapacitor from 0 V • External resistor programmable operation – FB pin to adjust supercapacitor regulation voltage – ISET to set charge current from 10 mA to 800 mA • High accuracy – ±1% charge voltage accuracy – ±10% charge current accuracy • Charging features – CE pin for charging function control – Open-drain output for status and fault indication – Open-drain output for power-good indication • Integrated fault protection – 18-V IN overvoltage protection – 1000-mA overcurrent protection – 125°C thermal regulation; 150°C thermal shutdown protection – OUT short-circuit protection – ISET pin short/open protection WSON-8 2.0mmx2.0mm