I am hoping to use a Pololu 5V, 5A regulator to power 2 usb -> sata converters, a USB hub and a Raspberry Pi. My problem is that when I attach all 3 devices at the same time, the voltage out of the regulator is at 4.65v.
The sata devices are Anker usb 3.0 to SATA converters (via the hub)
The sata devices are also powered with 12v (I am using 3.5in disks)
The power supply is 12v @ 6a and is not sagging under load.
I milled a simple breakout board which contains no discrete components.
The breakout board contains a socket for the regulator, a 12v socket and a usb power socket.
None of the above sockets are at all warm.
The regulator was running at 50c. A fan reduced this to 32c. There was no change in the voltage.
What am I missing?