BQ24382 (ACTIVE)

Overvoltage/Overcurrent Protection IC and Li+ Charger Front-End Protection IC with LDO Mode,10.5 OVP



The bq2438x family of devices are charger front-end integrated circuits (ICs) designed to provide protection to Li-ion batteries from failures of the charging circuit. The device continuously monitors the input voltage and battery voltage. The device operates like a linear regulator, maintaining a 5.5-V (bq24380) or 5-V (bq24381, bq24382) output with input voltages up to the Input overvoltage threshold. During input overvoltage conditions, the device immediately turns off the internal pass FET disconnecting the charging circuit from the damaging input source. Additionally, if the battery voltage rises to unsafe levels while charging, power is removed from the system. The device checks for short-circuit or overload conditions at its output when turning the pass FET on, and if it finds unsafe conditions, it switches off and then rechecks the conditions. Additionally, the device also monitors its die temperature and switches off if it exceeds 140°C.

When the device is controlled by a processor, the device provides status information about fault conditions to the host.


  • Input Overvoltage Protection
  • Accurate Battery Overvoltage Protection
  • Output Short-Circuit Protection
  • Soft-Start to Prevent Inrush Currents
  • Soft-Stop to Prevent Voltage Spikes
  • Maximum Input Voltage of 30 V
  • Supports up to 1.7-A Load Current
  • Thermal Shutdown
  • Enable Function
  • Fault Status Indication
  • Small 2 mm × 2 mm 8-Pin WSON Package

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

Number of Series Cells (Min)
Number of Series Cells (Max)
Input Over-Current Protection (A)
Input Over-Voltage Protection (V)
Communication Interface
Typical Operating Current (Typ) (uA)
Vin (Max) (V)
BQ24382 BQ24380 BQ24381
Charger Front-End Protection    Charger Front-End Protection    Charger Front-End Protection   
1    1    1   
1    1    1   
1.5    1.5    1.5   
10.5    6.3    7.1   
No Communication    No Communication    No Communication   
Over-voltage (OV)
Short-circuit Discharge (SCD)   
Over-voltage (OV)
Short-circuit Discharge (SCD)   
Over-voltage (OV)
Short-circuit Discharge (SCD)   
300    250    300   
Catalog    Catalog    Catalog   
30    30    30