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Standalone Arduino - power supply question

pauldreed

New Member
Hi, I am building a 'standalone' project using a Atmega 328P-PU chip, and using a LT7805 regulator, but am not sure what value capacitors to use on the input and output sides of the regulator.
I have looked at the LT7805 spec sheets and they use 0.33uF on the input and 0.1uF on the reg output, which seem extremely low values????
 

Ian Rogers

User Extraordinaire
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Most Helpful Member

pauldreed

New Member
It was the arduino schematic that confused me, as the 2 X 47uF caps are a lot different in value to the 0.33uF & 0.1uF as proposed in the LT7805 data sheet...
 

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