🎄 Join our holiday celebration with $5.99 flat-rate shipping until December 12th! 🎄

STEF05DPUR

Active

Free

Electronic fuse for 5 V line

Quantity $ per Unit Savings
1 - 9$1.290%
10 - 24$1.1710%
25 - 90$1.1114%
Contact Sales
In stock
$1.29
or
Parameter NameParameter Value
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
RoHs compliantEcopack2
GradeIndustrial
Package NameDFN10 3X3

The STEF05D is an integrated electronic fuse optimized for monitoring output current and input voltage. Connected in series to a 5 V rail, it is capable of protecting the electronic circuitry on its output from overcurrent and overvoltage. The device has a controlled delay and turn-on time. When an overload condition occurs, the STEF05D limits the output current to a predefined safe value. If the anomalous overload condition. persists, it goes into an open state, disconnecting the load from the power supply. If a continuous short-circuit is present on the board, when power is re-applied the E-fuse initially limits the output current to a safe value, and then again goes into an open state.


The device is equipped with a thermal protection circuit. The intervention of the thermal protection is signal led to the board monitoring circuits through a signal on the Fault pin.


Unlike mechanical fuses, which must be physically replaced after a single event, the E-fuse does not degrade in its performance after short-circuit/thermal protection interventions and it is reset either by recycling the supply voltage or using the Enable pin.


The companion chip for 12 V power rails is also available with part number STEF12.

Key features
  • Continuous current typ: 3.6 A
  • N-channel on-resistance typ: 40 mΩ
  • Enable/fault functions
  • Output clamp voltage typ: 6.65 V
  • Undervoltage lockout
  • Short-circuit limit
  • Overload current limit
  • Controlled output voltage ramp
  • Thermal latch typ: 165 °C
  • Uses tiny capacitors
  • Operating junction temp. - 40 °C to 125 °C
  • Available in DFN10 (3 x 3 mm).