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Author Topic: Pull 3.3V from Pro Mini regulator?  (Read 647 times)
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I'm wondering if I power the Arduino Pro Mini 3.3V with a raw voltage (9V, say) can the regulator power the Arduino and allow me to draw current to power an SD card socket from the Vcc pin? An SD card needs 50-100 mA at 3.3V. Anyone tried it?

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I think you would be OK. I believe the regulator limit is 150ma so if don't have too much other loads it should work fine.


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