Overvoltage & Overcurrent Protection IC & Li+ Charger Front-End Protection IC - BQ24314A

BQ24314A (ACTIVE)

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

 

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.

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

View more

Parametrics Compare all products in Battery Monitor, Protection & Authentication Solutions

 
Function
Number of Series Cells (Min)
Number of Series Cells (Max)
Input Over-Current Protection (A)
Input Over-Voltage Protection (V)
Communication Interface
Features
Typical Operating Current (Typ) (uA)
Rating
Vin (Max) (V)
Pin/Package
BQ24314A BQ24308 BQ24311 BQ24312 BQ24313 BQ24314 BQ24314C BQ24315 BQ24316
Charger Front-End Protection    Charger Front-End Protection    Charger Front-End Protection    Charger Front-End Protection    Charger Front-End Protection    Charger Front-End Protection    Charger Front-End Protection    Charger Front-End Protection    Charger Front-End Protection   
1    1    1    1    1    1    1    1    1   
1    1    1    1    1    1    1    1    1   
1    0.7    0.125    1.5    1    1    1    1    1   
5.85    6.3    5.85    5.85    10.5    5.85    5.85    5.85    6.8   
No Communication    No Communication    No Communication    No Communication    No Communication    No Communication    No Communication    No Communication    No Communication   
Over-voltage (OV)    Over-voltage (OV)    Over-voltage (OV)    Over-voltage (OV)    Over-voltage (OV)    Over-voltage (OV)    Over-voltage (OV)    Over-voltage (OV)    Over-voltage (OV)   
400    410    400    400    400    400    400    400    400   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
30    30    30    30    30    30    30    30    30   
8WSON    8WSON    8WSON    8WSON    8WSON    12VSON
8WSON   
8WSON    8WSON    12VSON
8WSON