This part is a kind of semiconductor called MP8126DR.

Function of this product has LNB-Power Supply and Control-Voltage Regulator.

Manufacturers : MPS

Image and pinout :

Some of the text within the PDF file :

MP8126 550mA, 8V-to-14V Input, LNB-Power Supply and Control-Voltage Regulator The Future of Analog IC Technology DESCRIPTION The MP8126 is a voltage regulator designed to provide efficient, low-noise power to a satellite receiver’s RF LNB (Low Noise Block) converter. It connects using a coaxial cable through a link that is compatible with the European EUTELSAT specification (DiSEqC) 1.x that receives instructions from a dedicated controller. The MP8126 integrates a current-mode boost regulator followed by a tracking linear regulator. The boost regulator provides a clean and quiet power source that will not contaminate the lownoise RF signal as it is down-converted to the receiver. The tracking linear regulator protects the output against overloads or shorts. The MP8126 provides a number [ ... ]

MP8126DR PDF Datasheet Download