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BQ24314A
  • BQ24314A
  • BQ24314A

BQ24314A

ACTIVE

Overvoltage & Overcurrent Protection IC & Li+ Charger Front-End Protection IC

Texas Instruments BQ24314A Product Info

1 April 2026 3

Parameters

Rating

Catalog

Number of series cells (max)

1

Number of series cells (min)

1

Features

Overcurrent protection, Overvoltage

Function

Charger Front-End Protection

Operating current (typ) (µA)

400

Vin (max) (V)

30

Overvoltage protection

5.85

Operating temperature range (°C)

-40 to 125

Battery overvoltage protection (min) (V)

4.35

Battery overvoltage protection (max) (V)

4.35

Package

WSON (DSG)-8-4 mm² 2 x 2

Features

  • 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
  • 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

Description

The bq24314A 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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