National Semiconductor | High-performance Analog

 

 LP38511-ADJ   

800mA Fast-Transient Response Adjustable Low-Dropout Linear Voltage Regulator
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Features

  • 2.25V to 5.5V Input Voltage Range
  • Adjustable Output Voltage Range of 0.5V to 3.3V
  • 800mA Output Load Current
  • ±2.0% Accuracy over Line, Load, and Full-Temperature Range from -40°C to +125°C
  • Stable with tiny 10 uF ceramic capacitors
  • Enable pin
  • Typically less than 1uA of Ground pin current with Enable pin low
  • 25dB of PSRR at 100 kHz
  • Over-Temperature and Over-Current Protection
  • PSOP-8 and TO-263 THIN Surface Mount Packages
  • Description

    The LP38511-ADJ Fast-Transient Response Low-Dropout Voltage Regulator offers the highest-performance in meeting AC and DC accuracy requirements for powering Digital Cores. The LP38511-ADJ uses a proprietary control loop that enables extremely fast response to change in line conditions and load demands. Output Voltage DC accuracy is guaranteed at 2.5% over line, load and full temperature range from -40°C to +125°C. The LP38511-ADJ is designed for inputs from the 2.5V, 3.3V, and 5.0V rail, is stable with 10 uF ceramic capacitors, and has an adjustable output voltage. The LP38511-ADJ provides excellent transient performance to meet the demand of high performance digital core ASICs, DSPs, and FPGAs found in highly-intensive applications such as servers, routers/switches, and base stations.


    Applications

  • Digital Core ASICs, FPGAs, and DSPs
  • Servers
  • Routers and Switches
  • Base Stations
  • Storage Area Networks
  • DDR2 Memory


  • Typical Application

     

    ParametersValues
    Output Current 800 mA
    Output Min .5 Volt
    Input Min Voltage 2.25 Volt
    Input Max Voltage 5.5 Volt
    Dropout Voltage .25 Volt
    Adjustable Output Yes
    Quiescent Current 7.5 mA
    PSRR 73 dB
    Voltage Noise (rms) 25 uV
    Ceramic Capacitors Stable Yes
    Feedback Tolerance 2.0 %
    On/Off Pin Yes
    PowerGood / Error Flag No
    RegType LDO
    Temperature Min -40 deg C
    Temperature Max 125 deg C
    Output Max 4.5 Volt
    Feedback Voltage 0.500 Volt

    Datasheets
    TitleSizeDateOther
    Language
    LP38511-ADJ 800mA Fast-Transient Response Adjustable Low-Dropout Linear Voltage Regulator381
    Kbytes
    12-Feb-09日本語  


    Application Notes
    TitleSizeDateOther
    Language
    AN-1801: Application Note 1801 LP38511TJ-ADJ Evaluation Board353
    Kbytes
    23-Jan-09 
    AN-1770: Application Note 1770 LP38511MR-ADJ Evaluation Board498
    Kbytes
    10-Apr-09 
    AN-1797: Application Note 1797 TO-263 THIN Package2716
    Kbytes
    10-Mar-08日本語
    中文

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP38511MR-ADJ/NOPB


    RoHS Status


    PSOP
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide830
    DIGI-KEYWorldwide662
    FARNELLEurope and Asia301
    NEWARKAmericas291
    $0.60 each at 1K+ pcsrail
    of
    95
    LP38511MRX-ADJ/NOPB


    RoHS Status


    PSOP
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide2500
    DIGI-KEYWorldwide0
    $0.60 each at 1K+ pcsreel
    of
    2500
    LP38511TJ-ADJ/NOPB


    RoHS Status


    TO-263 THIN
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    AVNET-EMWorldwide2727
    DIGI-KEYWorldwide2330
    TAYLORAmericas1000
    $0.60 each at 1K+ pcsreel
    of
    1000

    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 LP38511-ADJ.

    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 LP38511-ADJ is located at RoHS Status.

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP38511TJ-ADJEV
    LP38511 Thin TO-263 800 mA Fast-Transient Response LDO with Error Flag Evaluation BoardFull production


     
    DistributorRegionQty
    MOUSERWorldwide1
    $37.50 each1

    Description:

    The LP38511TJ-ADJ is an adjustable LDO linear regulator capable of supplying up to 800 mA of output current, and incorporates an Enable function. The device has been designed to work with 10 µF input and output ceramic capacitors. Footprints areas for CIN and COUT will allow for a variety of sizes. Each board is assembled and tested in the factory. This evaluation board has the Thin TO-263 package mounted, and the output voltage is set to 1.20V.

    Contents:




    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
    LP38511MR-ADJ/NOPB

    77.907
    PSOP83260DetailN/AN/A
    NSXYTT
    L38511
    -ADJ
    LP38511MRX-ADJ/NOPB

    77.907
    PSOP83260DetailN/AN/A
    NSXYTT
    L38511
    -ADJ
    LP38511TJ-ADJ/NOPB

    789.308
    TO-263 THIN51260DetailN/AN/A
    NSUZXYTTE#
    LP38511
    TJ-ADJ

    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 LP38511-ADJ.

    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 LP38511-ADJ is located at RoHS Status.

    CAD Symbols and Models
    N/A
     Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LP38511MR-ADJCMOS70213010015840003449464325
    LP38511MRX-ADJCMOS70213010015840003449464325
    LP38511TJ-ADJCMOS70213010015840003449464325

    Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

    For more information on Reliability Metrics, please click here.


    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 LP38511-ADJ.

    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 LP38511-ADJ is located at RoHS Status.

    [Information as of 9-Feb-2012]