Small 42.7 KB PDF for the KA34063, a DC-DC converter control IC in the family of the common 34063 design, marketed with the KA prefix. The 34063 is a versatile switching regulator controller that can be wired as step-up, step-down or inverting converter with few external parts. The document should show pinout, internal block diagram and design formulas. Use it when troubleshooting small switching supplies, checking the timing capacitor, current-sense resistor and switch output. Verify the package marking before swapping in an MC34063 equivalent.
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 @cyberlanelectonik. 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.