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Dual LNBS supply and control IC with step-up and I²C interface

Quantity $ per Unit Savings
1 - 9$2.460%
10 - 24$2.2210%
25 - 99$2.1015%
100 - 249$1.7827%
250 - 499$1.6832%
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Parameter NameParameter Value
Supply Voltage Min Volt8.0
Supply Voltage Max Volt16.0
Packing TypeTape And Reel
RoHs compliantEcopack2
Package NameQFN-24L

Intended for analog and digital dual satellite receiver/Sat-TV, Sat-PC cards, the LNBH26LS is a monolithic voltage regulator and IC interface, assembled in QFN24 (4x4 mm) specifically designed to provide the 13/18 V power supply and the 22 kHz tone signaling to the LNB down-converter in the antenna dishes or to the multi-switch box. In this application field, it offers a complete solution for dual tuner satellite receivers with extremely low component count, low power dissipation together with simple design and I²C standard interfacing.

Key features
  • Complete interface between then 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 specification (8 programmable levels)
  • 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 with integrated power NMOS allowing low power losses
  • Overload and overtemperature internal protection with I²C diagnostic bits
  • LNB short-circuit dynamic protection
  • +/- 4 kV ESD tolerant on output power pins