STMicroelectronics STEF512GR Dual Electronic Fuse

STMicroelectronics STEF512GR Dual Electronic Fuse is designed to protect from overcurrent and overvoltage events in applications requiring hot swap operation and in-rush current control. This fuse is embedded with two independent electronic fuses, one for the 5V rails and one for the 12V rails. The start-up time for each e-fuse can be adjusted via two small soft-start capacitors connected to the relevant pins. The STEF512GR fuse limits the output current to the predefined safe value when an overload condition occurs. The maximum load current is precisely limited by utilizing a sense FET topology to factory-defined values. The STEF512GR fuse integrates 40mΩ power FETs that offer low voltage drop from the main supply to the load during normal operations. This dual e-fuse is used in Hard Disk Drives (HDD), Solid State Drives (SSD), set-top boxes, and HDD and SDD arrays.