-
--> In article <
[email protected]>,
-> -Hi,
-> -
-> -Is there an easy, efficient, and low cost way to get 5VDC to power a
-> -microcontroller (PIC16F77) from a standard 9 volt battery? If you need
-more
-> -information, please feel free to ask.
->
-> I'm glad you put efficient into the equation. Simply put any linear
-regulator
-> is going to consume almost half of your already meager power budget.
->
-> You need a switching regulator. You can get 2.5 out of your 3 requirements
-> by using the Roman Black 2 transistor switching regulator here:
->
->
http://www.romanblack.com/smps.htm
->
-> It has nearly double the efficiency of the linear regulator and will
-maintain
-> regulator down a lower voltage, so it'll run over twice as long as the
-> linear regulator. It's not a single part (so only half for easy) but it is
-> cheap and very very efficient.
->
-> BAJ
-
-The smps you recommend is nice, but if the OP is doing any analog
-measurements, the noise from the smps might interfere.
Low noise wasn't a part of the specification. Efficient was.