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LNBH24L - Dual LNBS supply/controller

General Description

Intended for analog and digital DUAL satellite receivers/Sat-TV, Sat-PC cards, the LNBH24L is a monolithic voltage regulator and interface IC, assembled in QFN 5x5 ePAD, specifically designed to provide the 13 / 18 V power supply and the 22 kHz tone signaling for two independent LNB down-converters

Key Features

  • Complete interface between LNBS 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 receivers output voltage specification.
  • Auxiliary modulation input (EXTM) facilitates DiSEqC™ 1.X encoding.
  • Low-drop post regulator and high efficiency step-up PWM with integrated power N-MOS allow low power losses.
  • Overload and over-tempe.

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LNBH24L Dual LNBS supply and control IC with step-up and I²C interface Features ■ Complete interface between LNBS 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 receivers output voltage specification ■ Auxiliary modulation input (EXTM) facilitates DiSEqC™ 1.