The FA7619 is a low RDS(ON), 4A eFuse with a 26V high voltage rating. The programmable current limit protects the power source from over-current or short-circuits conditions. The device is controlled by an on/off input, which is capable of interfacing directly with low-voltage control signals. In FA7619, an option 2kΩ on-chip load resistor is added for output fast discharge when the switch is turned off.
Other features include a power-OK (POK) output that signals when the output voltage is ready.


  • Typical 30mΩ On Resistance
  • 4A Continuous Current
  • Wide Supply Voltage Range for VIN from 4.5V to 24V
  • Adjustable Over Current Threshold
  • Adjustable Input Over Voltage Threshold
  • Programmable Soft Start Time
  • Output Discharge when Device Disabled
  • Over Temperature Protection (OTP)
  • Power-OK Output to Control Next Stage Switch
  • DFN 3x3mm²-12L Package
  • UL Listed File No. E501281 and CB Certified
  • Halogen Free and Green Devices (RoHS Compliant)


Part No. Vin_min (V) Vin_max (V) Configuration Loading (A) Rdson (mΩ) Output Discharge Adjustable Soft Start Timing Current Limit Reverse Voltage Blocking VIN/VOUT Breakdown OVP OTP
4.5 24 Single 4 30 Option 26V