LM388T Regulator Circuit.

Tandum (Robin) · #1 16-06-2009, 10:31 PM

Does any know how to setup an LM388T as a 5volt regulator? I can't find any data sheets/circuits to get the external components required. I want to jam one in my dew controller to power a USB hub at the mount.

Bassnut (Fred) · #2 16-06-2009, 11:07 PM

Yes, thats fairly obscure, why not a cheap, standard, 7805?

Tandum (Robin) · #3 17-06-2009, 12:02 AM

They're only 1/2 amp, I'll need almost 2amps to run a loaded 4port hub and that 388T is rated at 5amps and stocked by dick smiths.

Found a data sheet for a 317. They'll do 1.5Amps so close enough

Bassnut (Fred) · #4 17-06-2009, 12:20 AM

Well, OK, but the 78H05 would do, without the extra component bother. Anyway, its all small bikies, just extra time.

Gama · #5 17-06-2009, 02:51 AM

If you need more current, just place a transistor on the output of the regulator, and then you have maximum current of the power supply.

Theo.

IvanTheTerrible · #6 17-06-2009, 08:36 PM

http://www.wiparat.com/5v-high-curre...-power-supply/

Tandum (Robin) · #7 17-06-2009, 09:42 PM

Cheers Ivan, that will do it nicely ....