Product details

Function Charger Front-End Protection Number of series cells (Min) 1 Number of series cells (Max) 1 Features Overvoltage, Overcurrent protection Typical operating current (Typ) (uA) 400 Rating Catalog Vin (Max) (V) 30
Function Charger Front-End Protection Number of series cells (Min) 1 Number of series cells (Max) 1 Features Overvoltage, Overcurrent protection Typical operating current (Typ) (uA) 400 Rating Catalog Vin (Max) (V) 30
WSON (DSG) 8 4 mm² 2 x 2
  • 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
  • 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

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.

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.

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Technical documentation

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Type Title Date
* Data sheet bq24314C Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC datasheet (Rev. A) PDF | HTML 30 Jul 2015
EVM User's guide bq2430x/1x DSG EVM (HPA245) for Li+ Charger Front End Protection IC (Rev. B) 04 Nov 2016

Design & development

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Evaluation board

BQ24314EVM — BQ24314 Evaluation Module

The bq2431x evaluation module is a complete charger module for evaluating a charger front-endprotection and charger solution using the bq2431x and bq24080 devices. It is designed to deliver up to 700 mA of charge current to Li-ion or Li-polymer applications. The charger front-end protection current (...)

User guide: PDF
Not available on TI.com
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WSON (DSG) 8 View options

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