BQ25173-Q1 Automotive, Standalone 800-mA Linear Battery Charger for 1- to 4-Cell Supercapacitor

1 Features

AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C ≤ T_A ≤ 125°C
- HBM ESD classification level 2
- CDM ESD classification level C4B
40-V load-dump tolerant to support charging back-up supercapacitor, 3-V to 18-V operating
Automatic Sleep mode for low power consumption
- 350-nA output leakage current
- 2-µA input leakage current when charge disabled
Support 1- to 4-cell supercapacitor charging 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
- ISET pin short protection