The 20110 LED Regulator was really designed with command operation and constant voltage in mind. I like the module Stan shows for conventional operation. Had I known then what I know now, I might have attempted to do a fancier module with the capability of operating over a wide range of voltages. I think that ship has sailed at this point. It would probably be a larger module than the one I came up with, but of course it would also be more capable.
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