I am using an Arduino Uno to build a monitoring system and need to use a voltage regulator to turn a supply voltage of 24Vdc into the 7-12Vdc required by the Arduino Uno. Originally I was going to use a Pololu step down regulator see here(http://www.pololu.com/catalog/product/2102/specs
) but had several of them catch fire. As an alternative I am planning on using a R-R-6xxxP_D Series regulator see here(http://www.recom-international.com/pdf/Innoline/R-6xxxP_D.pdf
I noticed that on the specifications page it says there is a minimum output current of .1A or .2A (depending on the model). I was trying to determine what the minimum current the Uno would draw but have realized that all depends on what your doing.
I know that the 3.3V requires 50mA and that each digital input output uses 40mA. Does this mean that each input/output always uses 40mA, or they only use that when set to high?
I guess the real question is, do I need to worry about this minimum output current?