BQ24314C Texas instruments

BQ24314C

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BQ24314C

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Описание

The bq24314C device is a highly integrated circuit (IC) designed to provide protection to Li-ion batteries from failures of the charging circuit. The device continuously monitors the input voltage, the input current, and the battery voltage. In case of an input overvoltage condition, the device 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 device also monitors its own die temperature and switches off if it exceeds 140°C. The input overcurrent threshold is user-programmable. The device 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
- Battery Overvoltage
Maximum Input Voltage of 30 V
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 Lead 2 × 2
WSON Package

Function	Charger Front-End Protection
Number of series cells (min)	1
Number of series cells (max)	1
Features	Overcurrent protection, Overvoltage
Operating current (typ) (µA)	400
Rating	Catalog
Vin (max) (V)	30
Overvoltage protection	5.85
Operating temperature range (°C)	-40 to 125
Battery overvoltage protection (min) (V)	4.45
Battery overvoltage protection (max) (V)	4.45