ABLIC Inc. IC REG CTRLR BUCK SOT23-5 S-8521A33MC-AXST2U

The S-8521A33MC-AXST2U is an electronic component, the specifics of which cannot be determined with certainty due to its generic part number. The lack of descriptive information makes it difficult to provide details about its function or application without further context. It's possible that this code corresponds to a specific manufacturer's product or a custom-designed component for a particular system.