The document describes a non-isolated, high power factor (PF), high efficiency, TRIAC dimmable LED driver designed to drive a nominal LED string voltage of 41 V at 350 mA from an input voltage range ...
This design example report describes a 10 W non-isolated tapped buck power supply using LNK626DG device. It is an embedded power supply with 82% efficiency at 115 VAC and 230 VAC during full load.