Update. The EG2133 driver I used for the Lepton board lists minimum VCC at 4.5 V, which means hypothetically you may be able to drive the entire board with 5V.
This is the thread for the board. It’s really cheap if you do not need current sense, and a bit more expensive if you do. The gate threshold voltage of the MOSFETs is 3V, and the drain-source voltage is such that at 5V gate and 5V drain you will be in the gray area where it will work but not quite the best, check out the figure at the end, red area.
I suggest you wait for the Lepton to get tested by me and you can order a batch if successful.
As far as the current drain at rest, that’s not a problem, the mosfets won’t consume much power when idle. How much power, since it’s 5V, I have no idea but I could test that use case when the board arrives.
As @runger mentioned, the silicon shortage is very dramatic currently and also combined with the COVID restrictions and the war against Ukraine, worldwide logistics are stretched to a breaking point. I’ve been waiting for a simple delivery already 3 weeks. Used to take 3 days max, now is a crapshoot.
The Lepton board is using the G031 MCU which requires somewhat elevated skills to program. Caveat emptor.
What is your use case exactly, can you explain?
Cheers,
Valentine