There are thousands of buck regulators I can choose but I can use some good advices. I need fixed 7...8V output, 10...15V input and 2A maximum. The problem is I can't decide because I need smallest board (components) and high efficiency from 0.1A to 1.5A.
Most converters have high eff. starting from 0.5 or 1A. Others have a lot of components, including push-pull mosfets outside. And finally others are exorbitant as price (I found some from Linear Technology, inductorless, in fact component less but hugh price).