STEF512SRX

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...