The SiC40x family offers the following advantages: Better performing MOSFETs integrated in the SiC40x family enables higher efficiency. Selectable light load mode, to avoid EMI/audible noise issues. Current limit is programmable, so external components need not be oversized. The parts have an internal regulator to bias the internal analog circuits, so an external 5V Vcc supply is not needed (As competitor 1 needs).