DC-DC Buck Convertor - 12V To 3.3V 5V 9V
I'm have looked around and can find individual schematics for making a fixed switching regulator 12v to 3.3v or 12v to 5v.. or an adjustable switching regulator that I can use to make a 12v to 9v convertor, but I can't find a schematic for a simple circuit that will take 12v from a battery and convert it to 3.3v, 5v and 9v. Anyone done this already?
I have found a 12v to 3.3v and 5v convertor, premade. It has two seperate regulators, but they share an inductor and other componants, making a cleaner unit. If this unit also supplied 9v, it would be perfect.
I am looking for either a schematic or affordable premade unit. I would like switching and not linear, and I would like to output 3.3v, 5v & 9v DC from one 12v DC input
Advise or suggestions welcome. Thank you.