I'm just working on a little project which involves a small OLED display which needs about 100-150mA of 3.3V (depending on how much is on the screen of course as it's OLED)
I looked up the specs and I saw that the Raspberry can only provide 50mA of 3.3V. Which is fair enough, I know the DC-DC converter is already operating near its limits. I could add a voltage regulator powered by the 5V bus but I'd like to keep things as simple as possible.
So I was thinking: The pi I will use for this project is a model A. That lacks the LAN9512 ethernet chip but I assume it still has the NCP1117-3v3 converter which should provide up to 1A (I don't have with me right now so I can't check). I'm just wondering whether that limit of 50mA still applies, I would think that I can pull a bit more current from the 3.3V bus considering the whole ethernet chip is missing? I read the LAN9512 uses about 200mA, would that mean I could safely use 250mA? Or is there another reason why I shouldn't use more current from the 3.3V bus.