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I have a schematic for a bike lighting system that I'd like to get feedback on and help with. As I think I mentioned when I signed up here, I've no expertise with hardware at all (I can rewire a lamp), so my design essentially reflects only the logic, not the electric changes or the glue needed...

Does anyone know of a buck ic that will accept li-ion/-poly voltage (14.8 nominal), provide at least 1.0A max current, and is available in a socketable dip or sip? Right now I'm looking at the ZXLD1360, but it's only available in surface mount, which doesn't appeal.

I'm a utility cyclist trying to become car-free, and I ride my bike regardless of time or weather. To help make that easier and safer, I'm kludging up a design for a comprehensive picaxe-controlled lighting system. I'm a software nerd, but my hardware knowledge is extremely limited, one might...