AVR-Chat

>
>
> > I didn't the 1st time I used a LDO.....
>
> Not as much as I should have, HAHA. Seems OK tough, 100uF Tantalum 600mOhm
> both on input and output.
> Doesn't meet input requirements (should be < 150mOhm); I might put an X5R
> 1uF in parallel... I don't think it oscillates or anything though.
>

See Linear Tech. AN88 "Ceramic Input Capacitors Can Cause Overvoltage
Transients".
http://cds.linear.com/docs/Application%20Note/an88.pdf

Tantalums on the input need to be surge rated.


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