The bq24314 and bq24316 devices 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.
The IC can be controlled by a processor and also provides status information about fault conditions to the host.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | bq2431x Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC datasheet (Rev. D) | PDF | HTML | 29 Apr 2016 |
| EVM User's guide | bq2430x/1x DSG EVM (HPA245) for Li+ Charger Front End Protection IC (Rev. B) | 04 Nov 2016 | ||
| Application note | How to Meet 24V Hot Plug-In Test for Charge Front-End bq243xx | 02 Jan 2008 | ||
| Application note | High Voltage Pulse Transient Safety Design fro bq243xx | 04 Dec 2007 | ||
| EVM User's guide | bq24314/6 DSJ EVM (HPA251) for Li+ Charger Front End Protection IC | 20 Aug 2007 |
For additional terms or required resources, click any title below to view the detail page where available.
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VSON (DSJ) | 12 | Ultra Librarian |
| WSON (DSG) | 8 | Ultra Librarian |
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