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STEF512SRX

STMicroelectronics
Part Number STEF512SRX
Manufacturer STMicroelectronics
Description Dual electronic fuse
Published Mar 6, 2023
Detailed Description STEF512SRX Datasheet Dual electronic fuse for 5 V and 12 V rails with reverse current blocking Maturity status link STE...
Datasheet PDF File STEF512SRX PDF File

STEF512SRX
STEF512SRX

Overview
STEF512SRX Datasheet Dual electronic fuse for 5 V and 12 V rails with reverse current blocking Maturity status link STEF512SRX Features • 5 V and 12 V channels into one chip • 25 V absolute maximum input voltage • Precise output overvoltage clamp • Fixed overcurrent protection for both channels • Reverse current protection on 5 V channel • Thermal protection • Available in auto-retry version • Input undervoltage lockout • Adjustable output voltage slew rate • Integrated 45 mΩ power MOSFETs • SAS disable pin • Current monitor pin selection • Current monitor output in a single pin for both rails • DFN10 (2 x 3 mm) package Applications • HD and SSD • Hard disk arrays and NAS • Hot plug protections Description The STEF512SRX is an integrated dual electronic fuse, designed to protect circuitry on the output from overcurrent and overvoltage events, in those applications requiring hot swap operation and inrush current control.
The device embeds two electronic fuses, one for the 5 V rail and one for the 12 V rail.
Thanks to the very low on-resistance of the integrated power MOSFETs, the voltage drop from the main supply to the load is very low during normal operation.
The 5 V channel provides a reverse blocking feature, preventing current flow to the input in case of brown-out or shutdown.
The start-up time is internally controlled by a dedicated slew rate circuit.
In this way the inrush current at startup can be kept under control.
The maximum load current is precisely limited, by utilizing a sense FET topology, to factory-defined values.
The device also provides precise overvoltage clamp for each channel, preventing the load being damaged from power supply failures, and undervoltage lockout (UVLO), assuring that the input voltage is above the minimum operating threshold, before the power is turned on.
When an overload condition occurs, the STEF512SRX limits the output current to the predefined safe value.
If the anomalous overload condition persists, the device goes int...


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