Datasheet in PDF form for the ON Semiconductor NCP1587, a synchronous buck PWM controller, filed as 408 KB and tagged in this index as a schematic. It gives the pinout, typical application circuit, operating limits and function descriptions a technician needs when diagnosing a buck converter on a motherboard. Use it to identify the gate-drive, feedback and enable pins, check the expected output voltage set by the feedback divider and compare readings against the reference values before replacing the controller or its MOSFETs.
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 @BiosSchematicBoardviewNoLimit. Enginerys does not host this file.
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