SM3517 datasheet in PDF format, 39.5 KB. Only the part number appears in the file name; no brand, suffix or revision information is given, so the device type should be confirmed inside the document. Datasheets like this provide pin assignments, maximum ratings and typical operating values that help with in-circuit measurement and part substitution during a repair. It can be opened in any PDF viewer. Neighbouring numbers in the same series can differ in ratings, so make sure the marking on the chip reads SM3517.
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 @datasheet_technar_org. 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.