Literature-coded datasheet in PDF format, 231 KB, labelled SDNS001 revision B. The name is uninformative about the specific part; its numbering style resembles Texas Instruments document codes, so the device title must be read from the document itself. Repair use usually centres on checking pin functions, input and output voltage levels, current limits and the mechanical package drawing. Any standard PDF viewer opens it. Cross-check the marking on the component being diagnosed against the part number printed in the sheet.
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.