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LNBH25L Datasheet Lnb Supply/controller

Manufacturer: STMicroelectronics

Overview: LNBH25L LNB supply and control IC with step-up and I²C interface.

General Description

Intended for analog and digital satellite receivers/Sat-TV and Sat-PC cards, the LNBH25L is a monolithic voltage regulator and interface IC, assembled in QFN24 (4x4) specifically designed to provide the 13/18 V power supply and the 22 kHz tone signalling to Table 1.

Device summary Order code Package LNBH25LPQR QFN24 (4 x 4) Packaging Tape and reel February 2012 Doc ID 022634 Rev 2 1/28 .st.

28 Contents Contents LNBH25L 1 Block diagram .

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.
  • Accurate built-in 22 kHz tone generator suits widely accepted standards.
  • 22 kHz tone waveform integrity guaranteed also at no load condition.
  • Low-drop post regulator and high efficiency step-up PWM.

More Datasheets from STMicroelectronics

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LNBH25L Distributor