I've been quietly following this thread as I have a similar problem to solv= e. The=20 LT4356 might just solve my problem, thanks for suggesting it! On 2 Sep 2013 at 17:58, Darron Black wrote: > I was holding off on putting a little ARM-based SBC in my car for=20 > transient reasons... >=20 > I finally settled on a protection circuit based on the LT4356-1 (pretty=20 > much the circuit on the first page of the datasheet). I can't get much=20 > past it in bench testing, so I'm pretty happy with it. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .