sales@hkmjd.com
Service Telephone:86-755-83294757
Trade Name:Current and Power Monitors, Regulators
Brand:ST
Particular Year:24+
Package:DFN-10
Delivery Date:New and Original
Stock: 6000pcs
The STEF05BWPUR 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 STEF05 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 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 12 V power rails is also available with part number STEF12.
Features—STEF05BWPUR
■ 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 (3x3 mm) package
Applications—STEF05BWPUR
■ Hard disk drives
■ Solid state drives (SSD)
■ Hard disk and SSD arrays
■ Set-top boxes
■ DVD and Blu-ray disc drivers
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Package
Quantity
Describe
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SOIC-8
20000
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SOT-223-3
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