National Semiconductor | High-performance Analog

 

 LP38513   
3A Fast Response Ultra Low Dropout Linear Regulator 		Click link to Download

Features

  • Conversions from 2.5V rail to 1.8V
  • Stable with ceramic capacitors
  • Low ground pin current
  • Load regulation of 0.1% for 10 mA to 3A load current
  • 60 μA typical quiescent current in shutdown mode
  • Guaranteed output current of 3A
  • Available in TO220-5 and TO263-5 packages
  • Guaranteed VOUT accuracy of ±2.6% with TJ from 0°C to +125°C
  • ^ERROR flag indicates VOUT status
  • Over-Temperature and Over-Current protection
  • −40°C to +125°C operating TJ range

    • Description

    The LP38513 fast response ultra low dropout linear regulator operates from a +2.25V to +5.50V input supply. This ultra low dropout linear regulator responds very quickly to step changes in line or load conditions, which makes it suitable for low voltage microprocessor applications. Developed on a CMOS process, with a PMOS pass transistor, the LP38513 has low quiescent current operation that is independent of the output load current.

    Ground Pin Current: Typically 12 mA at 3A load current.

    Disable Mode: Typically 60 µA quiescent current when the Enable pin is pulled low.

    ^ERROR Flag: The ^ERROR Flag goes low if VOUT falls more than typically 15% below the nominal value.

    Precision Output Voltage: A guaranteed VOUT accuracy of ±2.6% with TJ from 0°C to 125°C.


    Applications

  • Microprocessor power supplies
  • GTL, GTL+, BTL, and SSTL bus terminators
  • Power supplies for DSPs
  • SCSI terminator
  • Post regulators
  • Battery chargers
  • Other battery powered applications

    • WEBENCH® LP38513
        Min   Max   Range  
      VIN – V    2.25 – 5.50V  
      VOUT V    0.50 – 5.00V  
      IOUT A    ≤ 3.00A  
      Ambient Temp °C    ≤ 100°C  
    Footprint BOM Cost Efficiency
    What are WEBENCH® tools?




    Typical Application

     

    ParametersValues
    Output Current 3000 mA
    Input Min Voltage 2.25 Volt
    Input Max Voltage 5.5 Volt
    Dropout Voltage 0.425 Volt
    Adjustable Output No
    Quiescent Current 10 mA
    PSRR 73 dB
    Voltage Noise (rms) 45 uV
    Ceramic Capacitors Stable Yes
    On/Off Pin Yes
    PowerGood / Error Flag Yes
    RegType LDO
    Temperature Min -40 deg C
    Temperature Max 125 deg C
    Output Voltage 1.8 Volt

    Datasheets
    TitleSizeDateOther
    Language
    LP38513 3A Fast Response Ultra Low Dropout Linear Regulator419
    Kbytes    		9-Mar-09日本語  


    Application Notes
    TitleSizeDateOther
    Language
    AN-1518: Application Note 1518 LP38513S-1.8 Evaluation Board295
    Kbytes    		15-Aug-07 
    AN-1801: Application Note 1801 LP38511TJ-ADJ Evaluation Board353
    Kbytes    		23-Jan-09 
    AN-1802: Application Note 1802 LP38512TJ-ADJ Evaluation Board354
    Kbytes    		23-Jan-09 
    AN-1670: Application Note 1670 LP38513TJ-ADJ Evaluation Board356
    Kbytes    		23-Jan-09 

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP38513S-1.8/NOPB


    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide365
    AVNET-EMWorldwide357
    DIGI-KEYWorldwide1048
    MOUSERWorldwide360
    RS COMPONENTSWorldwide14
    TAYLORAmericas365
    		$1.00 each at 1K+ pcsrail
    of
    45
    LP38513SX-1.8/NOPB


    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.00 each at 1K+ pcsreel
    of
    500
    LP38513T-1.8/NOPB


    RoHS Status

    TO-220    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.00 each at 1K+ pcsrail
    of
    45

    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 LP38513.

    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 LP38513 is located at RoHS Status.

    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP38513S-1.8EV
    		3A Fast Response Ultra Low Dropout Linear RegulatorFull production


     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$37.50 each1

    Features:

    • Conversions from 2.5V rail to 1.8V
    • Stable with ceramic capacitors
    • Low ground pin current
    • Load regulation of 0.1% for 10 mA to 3A load current
    • 60 µA typical quiescent current in shutdown mode
    • Guaranteed output current of 3A
    • Available in TO220-5 and TO263-5 packages
    • Guaranteed VOUT accuracy of ±2.6% with TJ from 0°C to 125°C
    • Error flag indicates VOUT status
    • Over-temperature and Over-Current protection
    • -40°C to 125°C operating TJ range

    Applications:

    • Microprocessor power supplies
    • GTL, GTL+, BTL, and SSTL bus terminators
    • Power supplies for DSPs
    • SCSI terminator
    • Post regulators
    • Battery chargers
    • Other battery powered applications

    Contents:

    • A LP38513S-1.8 Fully Assembled Evaluation Board
    • A LP38513 Datasheet
    • A LP38513 Evaluation Board Appnote



    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
    LP38513S-1.8/NOPB

    		1448.647
    1449.868
    		TO-26353245DetailDownloadN/A
    		NSUZXYTTE#
    LP38513S
    -1.8
    LP38513SX-1.8/NOPB

    		1448.647
    1449.868
    		TO-26353245DetailDownloadN/A
    		NSUZXYTTE#
    LP38513S
    -1.8
    LP38513T-1.8/NOPB

    		1905.986
    		TO-22051NADetailDownloadN/A
    		NSUZXYTTE#
    LP38513T
    -1.8

    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 LP38513.

    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 LP38513 is located at RoHS Status.

    CAD Symbols and Models
    Download LP38513 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LP38513S-1.8CS065247473430552700011568301341
    LP38513SX-1.8CS065247473430552700011568301341
    LP38513T-1.8CS065247473430552700011568301341

    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 LP38513.

    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 LP38513 is located at RoHS Status.

    [Information as of 9-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation