View source for LM2576 Buck Regulator

This was a Buck Regulator that I chose to use for a few projects. This is good if you want to efficiently convert a higher voltage source to a lower voltage like 12V to 5V. Linear regulators can do this too, but they burn off The power difference as heat. A buck regulator does not. This model comes in many different fix output voltage flavors and it also comes in an adjustable version. It's low cost <$5. In a lot of Rc car projects these things are referred to as Battery Eliminator Circuits (BEC) and sell for ~$40


'''Specs:''' http://www.national.com/ds/LM/LM2576.pdf

''Voltage In:'' 4 V ~ 40 V

''Voltage Out:'' 1.23 V ~ 37 V

''Current Out:'' 3A

''Highlights:'' Requires only 2 caps, an inductor and a diode.


[[File:LM2576_Schematic.png|420px|thumb|right|Schematic]] 


[[File:LM2576_Pinouts.png|420px|thumb|right|Package comes in SMT TO-263, 5-Lead TO-220]]

'''BOM'''
*100uF Capacitor
*1000uF Capacitor
*100uH Inductor
**http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=445-3750-1-ND
**http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=811-1308-ND
*1N5822 Schottky Diode
**http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=1N5822GOS-ND