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STEF12E

STMicroelectronics
Part Number STEF12E
Manufacturer STMicroelectronics
Description Electronic fuse
Published Mar 6, 2023
Detailed Description STEF12E Datasheet Electronic fuse for 12 V line DFN10 (3x3 mm) Maturity status link STEF12E Device summary Order cod...
Datasheet PDF File STEF12E PDF File

STEF12E
STEF12E


Overview
STEF12E Datasheet Electronic fuse for 12 V line DFN10 (3x3 mm) Maturity status link STEF12E Device summary Order code STEF12EPUR Package DFN10 (3x3 mm) Packing Tape and reel Features • Continuous current typ.
3.
6 A • N-channel on-resistance typ.
45 mΩ • Enable/fault functions • Output clamp voltage typ.
15 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 (3x3 mm) package • UL2367 Recognized - File N.
E468771 Applications • Hard disk drives • Solid state drives (SSD) • Hard disk and SSD arrays • Set-top boxes • DVD and Blu-ray disc drivers Description The STEF12E is an integrated electronic fuse optimized for monitoring output current and input voltage.
Connected in series to a 12 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 STEF12E 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 signalled to the board monitoring circuits through a signal on the Fault pin.
Unlike the mechanical fuses, which must be physically replaced after a single event, the Efuse 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 the 5 V power rails is also available with part number STEF05.
DS12800 - Rev 2 - June 2022 For ...



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