Can you suggest something?However the 34063 is not the right chip to get 95% type efficiencies from, if you want something like that there are much better chips.
Low part count line the 3406.
In Dip package or even SOP. I could probably go smaller as I am already dealing with a pt4114 that is a really tiny SMD (can't remember the exact footprint right now), still not sure if I am going to be able to solder that tiny thing.