1 - I did the layout in software pi expert designed a driver with input 85-265V output 11V / 0.9A (10W). The project included CI lnk457, but in the datasheet that supports up to 8W. The circuit turns off when the current is about 0.9 A (11,5V / 10W). But up to 0.75 A continues working. This is because the lnk457 supports up to 8W?
2 - I needed to sample a transformer and lnk460 (or lnk458) can I pay only one shipping?