Datasheet for the SC1485, a 464 KB PDF, with no manufacturer stated in the name. The SC prefix is used by Semtech, whose SC14xx parts are PWM controllers for system power rails, but verify that inside the document. Repairers use such a datasheet to identify the enable, feedback, gate drive and power-good pins, check the output voltage setting resistors and confirm the switching MOSFETs are driven correctly. Compare the chip marking before relying on pinout values.
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.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.