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 LNBH25 is a monolithic voltage regulator and interface IC, assembled in QFN24 4x4 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 and low power dissipation together with a 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 (15 programmable levels)
    • Accurate built-in 22 kHz tone generator suits widely accepted standards
    • 22 kHz tone waveform integrity guaranteed also at no load condition
    • Low-drop post regulator and high efficiency step-up PWM with integrated power N-MOS 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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LNBH25PQR QFN-24L Tape And Reel
Active
0.768 10000 EAR99 MALAYSIA Check Availability

Distributor availability ofLNBH25PQR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3850 1 Order Now
ARROW EUROPE 8000 0 Order Now
Newark Element14 AMERICA 1000 0 Order Now
MOUSER WORLDWIDE 3801 1 Order Now
Farnell Element14 EUROPE 605 1 Order Now

Distributor reported inventory date: 2019-09-17

Distributor Name

DIGIKEY

Stock

3850

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

8000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

1000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

3801

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

605

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-17

Buy now

LNBH25PQR

Package

QFN-24L

Packing Type

Tape And Reel

Unit Price (US$)

0.768*

Distributor availability ofLNBH25PQR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3850 1 Order Now
ARROW EUROPE 8000 0 Order Now
Newark Element14 AMERICA 1000 0 Order Now
MOUSER WORLDWIDE 3801 1 Order Now
Farnell Element14 EUROPE 605 1 Order Now

Distributor reported inventory date: 2019-09-17

Distributor Name

DIGIKEY

Stock

3850

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

8000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

1000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

3801

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

605

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-17

Marketing Status

Active

Unit Price (US$)

0.768

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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Related Applications

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Evaluation Tools

    • Part Number

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

      Single LNB supply and control IC DiSEqC 2.0 compliant based on LNBH25

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS8729
      LNB supply and control IC with step-up and I²C interface
      4.0
      1.03 MB
      PDF
      DS8729

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

    • Description Version Size Action
      AN4175
      LNBH25 supply and control IC with step-up and I²C interface
      2.1
      1.74 MB
      PDF
      AN4175

      LNBH25 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**
LNBH25PQR
Active
QFN-24L Industrial Ecopack2

LNBH25PQR

Package:

QFN-24L

Material Declaration**:

PDF 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.