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LNBH25S - LNB-supply / controller

General Description

Intended for analog and digital satellite receivers/Sat-TV and Sat-PC cards, the LNBH25S is a monolithic voltage regulator and interface IC, assembled in QFN24L (4x4 mm) specifically designed to provide 13/18 V power supply and 22 kHz tone signaling to the LNB down-converter in the antenna dish or t

Key Features

  • Complete interface between LNB and I²C bus.
  • Built-in DC-DC converter for single 12 V supply operation and high efficiency (typ. 93% @ 0.5 A).
  • Selectable output current limit by external resistor.
  • Compliant with main satellite receiver output voltage specifications (15 programmable levels).
  • Accurate built-in 22 kHz tone generator suits widely accepted standards.
  • 22 kHz tone waveform integrity guaranteed at no-load condition.

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📁 Similar Datasheet

Part Number Description Manufacturer
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LNBH25S LNB supply and control IC with step-up and I²C interface Datasheet - production data  Low drop post regulator and high efficiency step-up PWM with integrated power NMOS allowing low power losses  LPM function (low power mode) to reduce dissipation  Overload and overtemperature internal protections with I²C diagnostic bits  LNB short-circuit dynamic protection  +/- 4 kV ESD tolerant on output power pins Features  Complete interface between LNB and I²C bus  Built-in DC-DC converter for single 12 V supply operation and high efficiency (typ. 93% @ 0.