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STEF05S Image

The STEF05S from STMicroelectronics is an Integrated eFuse IC that is optimized for monitoring the 5 V DC power lines. It requires an input voltage of up to 25 V. This eFuse IC can precisely detect and react to overcurrent and overvoltage conditions when connected in series to the main power rail. It limits the output current to a safe value defined by the user when an overload condition occurs and if the anomalous overload condition persists, it goes into an open state, disconnecting the load from the power supply. This IC regulates the output to a preset safe value in case of overvoltage on the input. It has under-voltage lockout protection to prevent the load from malfunctioning and keep the IC off if the rail voltage is too low. This IC features an adjustable turn-on slew rate, which is useful to keep the inrush current under control during startup and hot-swap operations. It is available in a surface mount package that measures 2.90 x 2.80 mm and is ideal for hard disk and SSD drives, hard disk arrays, hot-swap boards, and hot-plug protection applications.

Product Specifications

Product Details

  • Part Number
  • Manufacturer
  • Description
    Integrated eFuse IC for Monitoring 5 V DC Power Lines


  • Package
  • Temperature Operating Range
    -40 to 125 Degree C
  • Applications
    Hard disk and SSD drives, Hard disk arrays, Hot-swap boards, Hot-plug protection application
  • Dimension
    2.90 x 2.80 mm

Technical Documents