ST Life.augmented


DiSEqC 1.X-compliant single LNB supply and control IC based on the LNBH25
  • active Active

The STEVAL-CBL009V1 demonstration board implements a DC-DC converter based on ST’s LNBH25 device. It is used to power LNBs in dish antennas to receive satellite TV signals.

It provides good performance at low cost using a low external component count, and includes all functions needed for supplying/interfacing LNB modules in accordance with international standards.

The device includes an I2C bus interface and, thanks to a fully integrated step-up DC-DC converter, it works with a single input voltage supply ranging from 8 V to 16 V.

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Data Brief

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
  • 22 kHz tone waveform integrity guaranteed also in no load condition
  • Low-drop post regulator and high efficiency step-up PWM with integrated power N-MOS for low power loss
  • LPM (low power mode) function to reduce dissipation
  • Overload and overtemperature internal protection with I2C diagnostic bits
  • LNB short-circuit dynamic protection
  • DiSEqC 1.x communication
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1844: DiSEqC 1.X-compliant single LNB supply and control IC based on the LNBH25
1.0 146 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-CBL009V1 gerber files
1.0 78 KB

Bill of Materials

Description Version Size
1.0 50 KB

Schematic Pack

Description Version Size
STEVAL-CBL009V1 schematics
1.0 73 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-CBL009V1ActiveLNBH25Buy Direct44.1Distributor reported inventory date: 2016-02-06
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA10

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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