L4973D3.3 Datasheet(PDF) - STMicroelectronics

IC REG BUCK ADJ/3.3V 3.5A SOIC20
Buck Switching Regulator IC Positive Adjustable (Fixed) 0.5V (3.3V) 1 Output 3.5A 20-SOIC (0.295", 7.50mm Width)

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