dknguyen:
Actually, its for the ENC28J60 ethernet controller..
The requirement is 3.3V..
I am using LM1117T voltage regulator..
According to the datasheet, the V(in) capacitor is 10uF and V(out) capacitor is 10uF.. however, according to the ENC28J60 board schematic, the V(in) capacitor is 0.47uF and V(out) capacitor is 47uF. The V(in) voltage is 5V..
If I don't have 0.47uF and 47uF capacitor, can I use other capacitor..? I have 0.1uF (many), 10uF (only 1) and 100uF (only 2)..
Another thing is, currently, i am feeding the LM1117 (3.3V regulator) from the output of LM7805 regulator.. At the same time, the 7805 regulator is also supplying voltage to a microcontroller circuit.. Is that OK or should I feed the 3.3V regulator directly from power 9V supply/battery..?