I'm working on a multiple board test fixture. Each board-under-test (BUT) will be supplied with its own regulated +5VDC from the fixture.
I would like to either current limit or fold-back limit each supply independently (so, if one BUT has a short, the other BUTs will continue to test out normally, and no damage will occur on the bad BUT or the fixture).
Limiting should occur at about 50mA. I'd like the limit to be programmable, either through hardware or, preferably, via software (like SPI or IIC).
Normally, I'd just design & build my own regulator for such purposes. There are lots and lots of new-fangled integrated regulators out there now, and I am wondering if anyone knows of a part that performs such a function natively.
FYI, the fixture will have a 12V bus internally, so LDO is not necessary.
I would like to either current limit or fold-back limit each supply independently (so, if one BUT has a short, the other BUTs will continue to test out normally, and no damage will occur on the bad BUT or the fixture).
Limiting should occur at about 50mA. I'd like the limit to be programmable, either through hardware or, preferably, via software (like SPI or IIC).
Normally, I'd just design & build my own regulator for such purposes. There are lots and lots of new-fangled integrated regulators out there now, and I am wondering if anyone knows of a part that performs such a function natively.
FYI, the fixture will have a 12V bus internally, so LDO is not necessary.