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question about PIC18F4550 USB internal regulator

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elrayes

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Hi

I have question concerning PIC18F4550 microcontroller internal USB voltage regulator, what is the maximum current can "Vusb" pin supply, I know it supplies 3.3v, but I wanna use for another application and don't know the maximum current it can supply.

Thanks
 

I don't think if it can be used to source exteranl device.
 

It isn't supposed to be an output pin but in reality, you can probably draw a mA or two from it without harm. You could use it as a reference voltage for an external regulator though.

Brian.
 

About being the reference voltage, I guess you are right if you connect it to some CMOS or FET, but not BJT or TTL.

Mahdi.
 

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