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Dual LNB supply and control IC DiSeqC 1.x compliant based on the LNBH26L
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This product evaluation board implements a DC-DC converter based on the LNBH26L device used to power LNB inside dish antennas which receive satellite TV signals. The LNBH26L is an integrated solution for supplying/interfacing satellite LNB modules in accordance with international standards, offering a complete solution for dual-tuner satellite receivers and good performance at low cost using few external components. The LNBH26L evaluation board includes an I2C bus interface and the internal 22 kHz tone generator (factory trimmed) is controlled by the DSQIN pin (TTL compatible), permitting immediate DiSEqC™ data encoding. A fully integrated step-up DC-DC converter allows operation with a single input voltage supply source 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 using an external resistor
  • Compliant with main satellite receiver output voltage specifications (8 programmable levels)
  • Accurate built-in 22 kHz tone generator suits widely-accepted standards
  • 22 kHz tone waveform integrity guaranteed also at no load
  • Low-drop post regulator and high-efficiency step-up PWM with integrated power N-MOS allowing low power losses
  • Overload and overtemperature internal protection with I²C diagnostic bits
  • LNB short-circuit dynamic protection
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB2193: Dual LNB supply and control IC DiSEqC 1.x compliant based on the LNBH26L
1.0 165 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-CBL014V1 gerber files
1.0 109 KB

Bill of Materials

Description Version Size
1.0 45 KB

Schematic Pack

Description Version Size
STEVAL-CBL014V1 schematics
1.0 136 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-CBL014V1ActiveLNBH26LBuy Direct36.75Distributor reported inventory date: 2016-02-29
Distributor NameRegionStockMin. order

(*) 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.