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LNB supply and control IC with step-up and I2C interface

Quantity $ per Unit Savings
1 - 9$2.860%
10 - 24$2.5810%
25 - 99$2.4315%
100 - 249$2.0827%
250 - 499$1.9532%
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In stock
Parameter NameParameter Value
Supply Voltage Min Volt8.0
Supply Voltage Max Volt15.0
Packing TypeTape And Reel
RoHs compliantEcopack2
Package NameVFQFPN 32 5x5x1.0 mm

Intended for analog and digital satellite receivers, the LNBH23L is a monolithic voltage regulator and interface IC, assembled in QFN32 5 x 5 specifically designed to provide the 13 / 18 V power supply and the 22 kHz tone signalling to the LNB down-converter in the antenna dish or to the multi-switch box. In this application field, it offers a complete solution with extremely low component count, low power dissipation together with simple design and I²C standard interfacing.

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 receivers output voltage specification
  • Auxiliary modulation input (EXTM pin) facilitates DiSEqC™ 1.X encoding
  • Accurate built-in 22 kHz tone generator suits widely accepted standards
  • Low-drop post regulator and high efficiency step-up PWM with integrated power NMOS allow low power losses
  • Overload and over-temperature internal protections with I²C diagnostic bits
  • LNB short circuit dynamic protection
  • ± 4 kV ESD tolerant on output power pins