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

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  • Intended for analog and digital satellite receivers/Sat-TV and Sat-PC cards, the LNBH25S is a monolithic voltage regulator and interface IC, assembled in QFN24L (4x4 mm) specifically designed to provide 13/18 V power supply and 22 kHz tone signaling 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 and low power dissipation together with a simple design and I²C standard interface.

    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 receiver output voltage specifications (15 programmable levels)
    • Accurate built-in 22 kHz tone generator suits widely accepted standards
    • 22 kHz tone waveform integrity guaranteed at no-load condition
    • Low drop post regulator and high efficiency step-up PWM with integrated power NMOS allowing low power losses
    • LPM function (low power mode) to reduce dissipation
    • Overload and overtemperature internal protections with I²C diagnostic bits
    • LNB short-circuit dynamic protection
    • +/- 4 kV ESD tolerant on output power pins

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Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
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LNBH25SPQR QFN-24L Tape And Reel
Active
0.863 10000 EAR99 MALAYSIA Check Availability

Distributor availability ofLNBH25SPQR

Distributor Name
Region Stock Min. Order Third party link
ANGLIA Live EUROPE 20 4000 Order Now

Distributor reported inventory date: 2019-09-09

Distributor Name

ANGLIA Live

Stock

20

Min.Order

4000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-09

LNBH25SPQR

Package

QFN-24L

Packing Type

Tape And Reel

Unit Price (US$)

0.863*

Distributor availability ofLNBH25SPQR

Distributor Name
Region Stock Min. Order Third party link
ANGLIA Live EUROPE 20 4000 Order Now

Distributor reported inventory date: 2019-09-09

Distributor Name

ANGLIA Live

Stock

20

Min.Order

4000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-09

Marketing Status

Active

Unit Price (US$)

0.863

Quantity

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 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

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Evaluation Tools

    • Part Number

      Power supply evaluation board for LNB based on the LNBH25S

      Power supply evaluation board for LNB based on the LNBH25S

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS10502
      LNB supply and control IC with step-up and I²C interface
      3.0
      1.2 MB
      PDF
      DS10502

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

Publications and Collaterals

    • Description Version Size Action
      Peripheral semiconductors for set-top box applications 4.3
      633.85 KB
      PDF

      Peripheral semiconductors for set-top box applications

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LNBH25SPQR
Active
QFN-24L Industrial Ecopack2

LNBH25SPQR

Package:

QFN-24L

Material Declaration**:

XML

Marketing Status

Active

Package

QFN-24L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com 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.