Protection IC (eFuse) by Littelfuse


A fully-integrated solution to protect the downstream circuits damage from abnormal events

The semiconductor-based Protection IC (eFuse) provides highly integrated functionality in compact-size packages in addition to existing passive overcurrent protection such as fuses and PTCs etc.

They offer protection against overcurrent, overvoltage, undervoltage, overtemperature, reverse current as well as inrush protection in Hot-swap and Hot-plug events.


  • Over voltage, over current, and over temperature protection
  • Under Voltage Lockout (UVLO)
  • Soft start
  • Reverse current blocking


  • Programmable Logic Control (PLC)
  • Battery system
Littelfuse — Protection ICs

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