DESCRIPTION

The bq24313 and bq24315 are highly integrated circuits 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. The output acts as a linear regulator. The output is regulated to VO(REG) for inputs between VO(REG) and

the overvoltage threshold. If an input overvoltage condition occurs, 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.

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