At 01:43 PM 10/28/99 -0200, you wrote:
>I have a small wall mount switching power supply and it
>uses a TO-220 IC, It takes the 120V and regulate ~5V
>via a small transformer.
>Any clue about what IC could it be?

My guess would be either one of the TOPSwitch or TinySwitch parts from Power
Integrations (http://www.powerint.com)  - they're basically three-pin
offline switchers.
Either that or Motorola makes some compatible parts, though I can't think
of the
part numbers offhand (MC3337X, I think, but I'm not sure on that.)

ND Holmes

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 Nathan D. Holmes   maverick@drgw.net, ndholmes@iastate.edu
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