STEVAL-LNBH01 Active

Power supply evaluation board for LNB based on the LNBH25LS
Core ProductLNBH25LS
Target ApplicationSet Top Box
ECCN USEAR99
ECCN EUNEC
Packing TypeNot Applicable
ROHS Compliance GradeEcopack2
GradeIndustrial
Package NameCARD
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% at 0.5 A)
  • Selectable output current limit by external resistor
  • Compliant with output voltage specifications for principal satellite receivers (15 programmable levels)
  • Accurate built-in 22 kHz tone generator suits widely accepted standards
  • 22 kHz tone waveform integrity guaranteed even at no load condition
  • Low drop post regulator and high efficiency step-up PWM with integrated power N-MOS for low power losses
  • LPM function (low power mode) to reduce dissipation
  • Overload and overtemperature internal protection with I²C diagnostic bits
  • LNB short-circuit dynamic protection
  • ±4 kV ESD tolerant on output power pins
  • RoHS compliant

This evaluation board implements a DC-DC converter based on the LNBH25LS device. It is used to power LNBs inside dish antennas to receive satellite TV signals.


The LNBH25LS is an integrated solution for supplying / interfacing satellite LNB modules in accordance with international standards. This simple solution offers a complete solution for dual tuner satellite receivers and offers high performance at low cost with a low external component count.


The LNBH25LS evaluation board includes an I²C bus interface and the internal 22 kHz tone generator which is factory trimmed and can be controlled by the DSQIN pin (TTL compatible), allowing immediate DiSEqC™ data encoding.


Thanks to a fully integrated step-up DC-DC converter, it functions with a single input voltage supply source ranging from 8 V to 16 V.

In stock:
$34.30
Range Unit Price Savings
1 - 500$34.300%
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