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Propstick USB - 3.3V OK on Vin? — Parallax Forums

Propstick USB - 3.3V OK on Vin?

ForrestForrest Posts: 1,341
edited 2006-12-08 16:15 in Propeller 1
I plan on powering the Propstick USB with a regulated 3.3V on pin 32 (Vdd). Using this setup, is it OK to also connect 3.3V to pin 12 (Vin)? The Propeller Robot Controller board currently has both of these pins connected to the 3.3V power supply and I'm wondering if I need to cut the circuit on the PRC.

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2006-12-08 16:15
    Yes, you can connect the regulated 3.3V to Vin. That will effectively bypass the regulator (by shorting the input to the output). The only problem with this is that there will be some leakage through the regulator to ground, probably not much (2-5ma).
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