BQ24314
BQ24314 is Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC manufactured by Texas Instruments.
- Part of the BQ24316 comparator family.
- Part of the BQ24316 comparator family.
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SLUS763D
- JULY 2007
- REVISED APRIL 2016 bq2431x Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC
1 Features
- 1 Provides Protection for Three Variables:
- Input Overvoltage, With Rapid Response in < 1 μs
- User-Programmable Overcurrent With Current Limiting
- Battery Overvoltage
- 30-V Maximum Input Voltage
- Supports up to 1.5-A Input Current
- Robust Against False Triggering Due to Current
Transients
- Thermal Shutdown
- Enable Input
- Status Indication
- Fault Condition
- Available in Space-Saving Small 8-Pin 2 × 2 SON and 12-Pin 4 × 3 SON Packages
2 Applications
- Mobile Phones and Smart Phones
- PDAs
- MP3 Players
- Low-Power Handheld Devices
- Bluetooth™ Headsets
3 Description
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 bees too hot. The input overcurrent threshold is userprogrammable....
