PDF datasheet of 2.59 MB whose name is only a number, so the component it covers cannot be identified from the title. Open it in any PDF reader to see the manufacturer and part number on the first page. Datasheets like this are used during board repair to check pin assignments, typical application circuits, absolute maximum ratings and package dimensions. Before ordering a replacement part, compare the marking on the chip with the ordering information inside the document so the variant and package are correct.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @ic_mosfet_pdf_datasheets. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.