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Overvoltage and overcurrent protection IC and Li+ charger front-end protection IC

Posted: 09 Aug 2007 ?? ?Print Version ?Bookmark and Share

Keywords:charging circuit? Li+ charger? front-end protection IC?

The bq24314 and bq24316 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. 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 becomes too hot. The input overcurrent threshold is user-programmable.

Please view the PDF document for more information.

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