I'm contemplating using these, or a diy version, as a built-in charger for a small-production product I'm prototyping (have to remove battery holder from product to access charger, to avoid pipe-bomb effect), so wanted to make it as versatile as possible for end-users. Good to know that if you leave it set to 1Amp it should still work on a lowly USB port, just much slower, was a point I wasn' sure of from TI's documents. I too saw these things after investigating the various offerings from Texas Instruments, would be neater to integrate TI chips directly into my own boards, but for now a separate board should suffice.