National Semiconductor | High-performance Analog

 

 LP5526   

Lighting Management Unit with High Voltage Boost Converter with up to 150mA Serial FLASH LED Driver from the PowerWise® Family
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Features

  • High efficiency boost converter with programmable output voltage up to 20V
  • 2 individual drivers for serial display backlight LEDs
  • Automatic dimming controller
  • Stand alone RGB controller
  • Dedicated flash function
  • Safety function to avoid prolonged flash
  • 3 general purpose IO pins
  • 25-bump micro SMD Package: (2.54mm x 2.54mm x 0.6mm)
  • Description

    LP5526 is a Lighting Management Unit for portable applications. It is used to drive display backlights, keypad LEDs, RGB LEDs and camera flash LEDs. LP5526 can drive 2 separately connected strings of LEDs with high voltage boost converter. The RGB driver allows driving either individual color LEDs or RGB LED from separate supply power, or it can be used to drive series connecter flash LEDs from high voltage boost converter.

    The backlight drivers (MAIN and SUB pins) are both high resolution constant current mode drivers. The flash outputs can drive series connected flash LED with up to 150mA of current. External PWM control can be used for dimming any selected LED outputs or it can be used to trigger the flash. The flash has also 1-second safety timer.

    The device is controlled through 2-wire low voltage I 2C compatible interface that reduces the number of required connections.


    Applications

  • Cellular Phones and PDAs
  • MP3 Players
  • Digital Cameras



  • Typical Application
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    Block Diagram
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    Typical Performance
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    ParametersValues
    Regulated LEDs 5
    LED Configuration Series
    Current Matching Perfect
    Boost Type Inductive
    Switching Frequency 1000 kHz
    Switching Type PWM
    Total LED Current 201 mA
    Efficiency (peak) 88 %
    PowerWise Technology Programmable RGB Driver
    Boost Voltage Regulated
    Supply Current 1500 mA
    Input Min Voltage 3 Volt
    Input Max Voltage 5.5 Volt
    OutputMax Voltage 20 Volt
    PWM BrightCtrl Yes
    Analog-V BrightCtrl No
    Ambient Light Compensation No
    RGB-LED Yes
    Temperature Min -30 deg C
    Temperature Max 85 deg C
    RegType Lighting Management Unit
    Automotive Yes
    PowerWise Yes

    Datasheets
    TitleSizeDateOther
    Language
    LP5526 Lighting Management Unit with High Voltage Boost Converter with up to 150mA Serial FLASH LED Driver1492
    Kbytes
    2-Jul-09   


    Application Notes
    TitleSizeDateOther
    Language
    AN-1502: Application Note 1502 LP5526 Evaluation Kit2362
    Kbytes
    12-Mar-07 
    AN-1442: Application Note 1442 Design and Programming Examples for Lighting Management Unit LP5526749
    Kbytes
    26-Jan-07 中文

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP5526TL/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide250
    FARNELLEurope and Asia250
    MOUSERWorldwide250
    NEWARKAmericas250
    $2.00 each at 1K+ pcsreel
    of
    250
    LP5526TLX/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $2.00 each at 1K+ pcsreel
    of
    3000

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LP5526.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LP5526 is located at RoHS Status.

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP5526TLEV
    Lighting Management Unit with High Voltage Boost Converter with up to 150mA Serial FLASH LED DriverFull production


     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $155.00 each1

    Description:

    The LP5526 is a Lighting Management Unit for portable applications. It is used to drive display backlights, keypad LEDs, RGB LEDs and camera flash LEDs. The LP5526 can drive 2 separately connected strings of LEDs with high voltage boost converter. The RGB driver allows driving either connector flash LEDs from high voltage boost converter.

    The backlight drivers (MAIN and SUB pins) are both high resolution constant current mode drivers. The flash outputs can drive series connected flash LED with up to 150mA of current. External PVW c ontrol can be used for dimming any selected LED outputs or it can be used to trigger the flash. The flash has also 1-second safety timer.

    Features:

    • High efficiency boost converter with programmable output voltage up to 20V
    • 2 individual drivers for serial display backlight LEDs
    • Automatic dimming controller
    • Stand along RGB controller
    • Dedicated flash function
    • Safety function to avoid prolonged flash
    • 3 general purpose IO pins
    • 25-bump micro SMD Package: (2.54mm x 2.54mm x 0.6mm)

    Applications:

    • Cellular Phones and PDAs
    • MP3 Players
    • Digital Cameras



    National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

    Lead Free product status is available through the search tool located here

    Part Number(s)
    (NSID)
    Weight
    (milligrams)
    TypePinsMSL RatingPeak ReflowRoHS
    Status
    CAD SymbolsModelsPackage
    Marking
    Format
    LP5526TL/NOPB

    7.844
    MICRO SMD251260DetailN/AN/A
    XYTT
    I 5526
    LP5526TLX/NOPB

    7.844
    MICRO SMD251260DetailN/AN/A
    XYTT
    I 5526

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LP5526.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LP5526 is located at RoHS Status.

    CAD Symbols and Models
    N/A
     Models
    N/A


    [Information as of 9-Feb-2012]