[EricVanWyk]

Originally Posted by Andrew Schuetze

Here you can read a thread by Squirrel which makes the 12VDC to 8 VDC conversion painlessly simple.

It is also very easy to retune an analog breakout to create 8V. All you need to do is change the resistor divider.

See the bottom of page 14 : http://focus.ti.com/lit/ds/symlink/tps5431.pdf