Used as an LED driver controller for bulbs and downlights due to its internal Zener clamp and reduced Bill of Materials (BOM) cost.
But here’s the quiet tragedy: Sometimes, the datasheet doesn’t exist. Not because the part isn’t real — but because it was never meant to be documented. Proprietary. Obsolete. Internal code. A ghost in the BOM. vpm2sm datasheet
When testing power boards containing this IC, ensure proper leakage current checks and avoid using isolation transformers unless specified by the service manual. Used as an LED driver controller for bulbs