I have a LM2930S-5.0:
http://www.national.com/ds/LM/LM2930.pdf#
in this mess:
I have a cap across the input and a resistor in line on the output (it was 6.8 before I added the resistor).
Yes, it is a cheap meter, but measuring VCC on a Mega I get 5v and on a Fio 3.3v. It is reasonably accurate.
What am I doing wrong? I don't want to smoke my 5v uC. The VR should be putting out 5v (datasheet says 5.5v max).
No cap on the output? From
No cap on the output? From the datasheet: “COUT must be at least 10 μF to maintain stability”.
Note to self - read the
Note to self - read the datasheets you link to and maybe you won’t look like an idiot…
Well, I took the resistor off and put a 22 uF (you may have noticed I am big on overkill) cap between the output and GND and now it reads 4.98. Thanking you is getting to be a regular thing. It’s like you follow the software guy around and keep him from letting the smoke out of the chips… Thanks!!!
