This part is a kind of semiconductor called AX1117.

Function of this product has 1.2A Low Dropout Positive Voltage Regulator.

Manufacturers : Avantics

Image and pinout :

Some of the text within the PDF file :

Page No. : 1/7 AX1117 Series 1.2A Low Dropout Positive Voltage Regulator AX1117 Series Pin Assignment 3-Lead Plastic SOT-89 Package Code: M Pin 1: ADJ/GND Pin 2: VOUT Pin 3: VIN 3-Lead Plastic SOT-223 Package Code: SJ Pin 1: ADJ/GND Pin 2 & Tab: VOUT Pin 3: VIN 3-Lead Plastic TO-252 Package Code: J Pin 1: ADJ/GND Pin 2 & Tab: VOUT Pin 3: VIN 3-Lead Plastic TO-220AB Package Code: E Pin 1: ADJ/GND Pin 2 & Tab: VOUT Pin 3: VIN 1 2 3 1 2 3 Features • Low Dropout Voltage 1.2V at 1.2A • Adjustable or Fixed Voltage (1.8V, 2.5V, 3.3V, 5V) • Over Current Protection • Thermal Overload Protection • Maximum Line Regulation 0.45% • Maximum Load Regulation 0.4% • Adjust Pin Current Less Than 90 uA Tab 3 1 2 Tab Applications • SCSI-2 Active Termination • Hi [ ... ]

AX1117 PDF Datasheet Download