The bq24314C is a highly integrated circuit designed to provide protection to Li-ion batteries from failures of the charging circuit. The IC continuously monitors the input voltage, the input current, and the battery voltage. In case of an input overvoltage condition, the IC immediately removes power from the charging circuit by turning off an internal switch. In the case of an overcurrent condition, it limits the system current at the threshold value, and if the overcurrent persists, switches the pass element OFF after a blanking period. Additionally, the IC also monitors its own die temperature and switches off if it exceeds 140°C. The input overcurrent threshold is user-programmable.
The IC can be controlled by a processor and also provides status information about fault conditions to the host.
Provides Protection for Three Variables:
Input Overvoltage, with Rapid Response in < 1 µs
User-Programmable Overcurrent with Current Limiting
30V Maximum Input Voltage
Supports up to 1.5A Input Current
Robust Against False Triggering Due to Current Transients