Voltage Regulator performance at/near dropout?

[mariush]

I only tested with the 2 x 220 ohm resistors in parallel. I can do some more tests if you're really interested, but it will have to be much later... I'd rather get some sleep now, it's 4:50 am here.

[BravoV]

Very linear. Oh the irony...

What happens if you apply a load? Does it go beserk?

If its Linear LT108x series, the regulation and drop out basically spot on even at max load as stated in their datasheet. I've done an exact experiment like marius have done while ago on LT1083 at 7.5 Amps.