AVR-Chat

> >You would be right about the headroom if I wasn't using an LP3966 
> >"3A Fast Ultra Low Dropout Linear Regulators" that drops only 80mV at 300mA.
> 
> Ha ha...but did you pay attention to the input and output
> capacitors recommended?
> 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.

> I must have missed it but what is the input voltage to the LDO?

5V (maybe 5.2V) from PC PSU.

Cat

> 
> Regards
> 
> John Samperi
> 
 		 	   		  

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