tale of $5.28 wasted....

Here is a switching regulator that costs less than $5. It does not require a heat sink or other components. Available at Digi-Key http://www.digikey.com/product-deta...6882670-VQ2-g-VQ6-45013741995-VQ15-1t1-VQ16-c

[ame]http://www.murata-ps.com/data/power/oki-78sr.pdf[/ame]