PDF for BD9422EFV, 1.10 MB, filed as a schematic. The code fits ROHM's BD-series IC numbering, with EFV denoting the package type; nothing else is in the name, so it is most likely the manufacturer's datasheet. These documents provide the pin map, block diagram, electrical characteristics and typical circuit, helping a technician check supply and control pins, identify faulty external parts or source a matching replacement. Make sure the chip's top marking and package agree with the document before using its pin numbers.
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 @gunvantrathore. 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.