I've designed a PCB schematic that uses a MOS device to switch one of the higher power rails. I've looked through the datasheets many times, and believe it should work, according to the Current-Voltage characteristics of the device. However, I'm very apprehensive about this, as I am worried that I missed something, and the drain-source voltage drop will degrade the available power on the rail.
I'm hoping someone could double check my design:
The regulators shown here are fixed voltage, Medium current (<5A). The MOSFETS are planned to be IRLB8743PbF NMOS. Here's the datasheet.
According to this graph in the datasheet, I believe this device should operate without a significant voltage drop on the output rail, at a Vg of ~3.3V. It is important that the drop be no more than half a volt to prevent sensor brownouts. Also, I anticipate the rails using very low current (mostly powering microcontrollers).
I would really appreciate any personal experience tips, or any help finding stuff I may have missed in the datasheet.
Thanks in advance!