I have been reading about the MAX40200 Ideal diode. It has very low forward drop (about 35mV), and very low reverse leakage. It is targeted at the portable electronics market for diode ORing an external power supply and an internal battery, and seems ‘ideal’ for the job.
Unfortunately, I can only find it in the 0.7mm x 0.7mm ‘quad-bump’ package, which isn’t feasible for us mere mortals to deal with. If you guys could come up with a nice small ‘breakout board’ containing 2ea MAX40200’s, I think you’d sell a bunch.
Just my $0.02