The MP8128 is a highly integrated voltage regulator designed to provide efficient, low noise power and interface signals to a satellite receiver’s low noise block downconverter (LNB) at the antenna port. The device provides a 22kHz tone signal and a standard I2C interface for satellite receivers. It is compatible with both DiSEqC 1.x and DiSEqC 2.x.
The MP8128 integrates a boost regulator followed by a tracking linear regulator. The boost regulator provides a power source that exceeds the final output voltage by 1.1V, while the tracking linear regulator provides low noise power and protects the output against overloads or shorts.
The device provides a number of features including voltage selection, over-current protection (OCP), and 22kHz tone signal control. The MP8128 offers a simple solution with a low component count and high efficiency.
The MP8128 is available in QFN-20 (3mmx3mm) package.
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