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

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  • Intended for analog and digital satellite receivers/sat-TV, sat-PC cards, the LNBH23 is a monolithic voltage regulator and interface IC, assembled in PowerSSO-24 ePAD and QFN32 (5 x 5 mm.) ePAD, 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, low power dissipation together with 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% @ 0.75 A), with integrated NMOS
    • Selectable output current limit by external resistor
    • Compliant with main satellite receiver systems specifications
    • New accurate built-in 22 kHz tone generator suits widely accepted standards (patent pending)
    • Fast oscillator start-up facilitates DiSEqC™ encoding
    • Built-in 22 kHz tone detector supports bi-directional DiSEqC™ 2.0
    • Very low-drop post regulator and high efficiency step-up PWM with integrated power NMOS allow low power losses
    • Two output pins suitable to by-pass the output R-L filter and avoid any tone distortion (R-L filter as per DiSEqC™ 2.0 specs, see typ. application circuits)
    • Overload and over-temperature internal protections with I²C diagnostic bits
    • Output voltage and output current level diagnostic feedback by I²C bits
    • LNB short circuit dynamic protection
    • ± 4 kV ESD tolerant on output power pins

Circuit Diagram

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Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
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LNBH23QTR VFQFPN 32 5x5x1.0 Tape And Reel
Active
1.438 10000 EAR99 MALAYSIA Check Availability

Distributor availability ofLNBH23QTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2811 1 Order Now
MOUSER WORLDWIDE 5797 1 Order Now

Distributor reported inventory date: 2019-10-18

Distributor Name

DIGIKEY

Stock

2811

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

5797

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-10-18

Buy now

LNBH23QTR

Package

VFQFPN 32 5x5x1.0

Packing Type

Tape And Reel

Unit Price (US$)

1.438*

Distributor availability ofLNBH23QTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2811 1 Order Now
MOUSER WORLDWIDE 5797 1 Order Now

Distributor reported inventory date: 2019-10-18

Distributor Name

DIGIKEY

Stock

2811

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

5797

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-10-18

Marketing Status

Active

Unit Price (US$)

1.438

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

      LNB power supply demonstration board based on the LNBH23

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS5188
      LNBs supply and control IC with step-up and I²C interface
      8.0
      445.38 KB
      PDF
      DS5188

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

    • Description Version Size Action
      AN2713
      LNB power supply based on the LNBH23 supply and control IC with step-up and I²C interface
      1.1
      1.23 MB
      PDF
      AN2713

      LNB power supply based on the LNBH23 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**
LNBH23QTR
Active
VFQFPN 32 5x5x1.0 Industrial Ecopack2

LNBH23QTR

Package:

VFQFPN 32 5x5x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 32 5x5x1.0

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.