National Semiconductor | High-performance Analog

 

 LP38501-ADJ   
3A FlexCap Low Dropout Linear Regulator for 2.7V to 5.5V Inputs 		Click link to Download

Features

  • FlexCap: Stable with ceramic, tantalum, or aluminum capacitors
  • Stable with 10 µF input/output capacitor
  • Adjustable output voltage from 0.6V to 5V
  • Low ground pin current
  • 25 nA quiescent current in shutdown mode
  • Guaranteed output current of 3A
  • Available in TO-263, TO-263 THIN packages
  • Guaranteed VADJ accuracy of ±1.5% @ 25°C (A Grade)
  • Guaranteed VADJ accuracy of ±3.5% @ 25°C (STD)
  • Over-Temperature and Over-Current protection
  • −40°C to +125°C operating TJ range
  • Enable pin (LP38501)

    • Description

    National's FlexCap LDO's feature unique compensation that allows the use of any type of output capacitor with no limits on minimum or maximum ESR. The LP38501/3 series of low-dropout linear regulators operates from a +2.7V to +5.5V input supply. These ultra low dropout linear regulators respond very quickly to step changes in load, which makes them suitable for low voltage microprocessor applications. Developed on a CMOS process, (utilizing a PMOS pass transistor), the LP38501/3 has low quiescent current that changes little with load current.

    Ground Pin Current: Typically 2 mA at 3A load current.

    Disable Mode: Typically 25 nA quiescent current when the Enable pin is pulled low.

    Simplified Compensation: Stable with any type of output capacitor, regardless of ESR.

    Precision Output: "A" grade versions available with 1.5% VADJ tolerance (25°C) and 3% over line, load and temperature.


    Applications

  • ASIC Power Supplies In:

  •  Printers, Graphics Cards, DVD Players

  •  Set Top Boxes, Copiers, Routers
  • DSP and FPGA Power Supplies
  • SMPS Regulator
  • Conversion from 3.3V or 5V Rail

    • WEBENCH® LP38501
        Min   Max   Range  
      Vin V    2.70 – 5.50V  
      Vout V    0.60 – 5.00V  
      Iout A    ≤ 3.00A  
      Ambient Temp °C    ≤ 100°C  
    Footprint BOM Cost Efficiency
     
     
     
     
    What are WEBENCH® tools?

    Also Recommended
    LP38503-ADJ▲3A FlexCap LDO Without Enable



    Parameters / ValuesLP38501-ADJ LP38503-ADJ
    Output Current3000 mA 3000 mA
    Output Min0.6 Volt 0.6 Volt
    Input Min Voltage2.7 Volt 2.7 Volt
    Input Max Voltage5.5 Volt 5.5 Volt
    Dropout Voltage0.42 Volt 0.42 Volt
    Adjustable OutputYes Yes
    Quiescent Current2 mA 2 mA
    PSRR58 dB 58 dB
    Voltage Noise (rms)100 uV 100 uV
    Ceramic Capacitors StableYes Yes
    Feedback Tolerance3.5 % 3.5 %
    On/Off PinYes No
    PowerGood / Error FlagNo No
    RegTypeLDO LDO
    Temperature Min-40 deg C -40 deg C
    Temperature Max125 deg C 125 deg C
    Special FeaturesFlexCap LDO FlexCap LDO
    Output Max5 Volt 5 Volt
    Feedback Voltage0.600 Volt 0.600 Volt

    Datasheets
    TitleSizeDateOther
    Language
    LP38501-ADJ 3A FlexCap Low Dropout Linear Regulator for 2.7V to 5.5V Inputs383
    Kbytes    		30-Oct-09日本語  


    Application Notes
    TitleSizeDateOther
    Language
    AN-1830: Application Note 1830 LP38501ATJ-ADJ Evaluation Board146
    Kbytes    		4-Apr-08 
    AN-1824: Application Note 1824 FlexCap Technology Simplifies LDO Design196
    Kbytes    		23-Sep-08 
    AN-1781: Application Note 1781 LP38501TJ-ADJ Evaluation Board146
    Kbytes    		29-Jan-08 
    AN-1732: Application Note 1732 LP38501TS-ADJ Evaluation Board146
    Kbytes    		22-May-08 

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP38501ATJ-ADJ/NOPB


    RoHS Status

    TO-263 THIN    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide5000
    DIGI-KEYWorldwide3616
    MOUSERWorldwide975
    TAYLORAmericas5000
    		$0.95 each at 1K+ pcsreel
    of
    1000
    LP38501TJ-ADJ/NOPB


    RoHS Status

    TO-263 THIN    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide1000
    CEACAsia Pacific28000
    DIGI-KEYWorldwide1866
    MOUSERWorldwide985
    		$0.95 each at 1K+ pcsreel
    of
    1000
    LP38501TS-ADJ/NOPB


    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide215
    DIGI-KEYWorldwide1455
    FARNELLEurope and Asia390
    MOUSERWorldwide226
    NEWARKAmericas390
    TAYLORAmericas215
    		$0.95 each at 1K+ pcsrail
    of
    45
    LP38501TSX-ADJ/NOPB


    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide6000
    AVNET-EMWorldwide8375
    CEACAsia Pacific3000
    DIGI-KEYWorldwide0
    MOUSERWorldwide500
    TAYLORAmericas6000
    		$0.95 each at 1K+ pcsreel
    of
    500

    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 LP38501-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 LP38501-ADJ is located at RoHS Status.

    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP38501ATJ-EV
    		Evaluation Board for the LP38501Full production


     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$40.00 each1

    Description:

    The LP38501ATJ-ADJ is a 3A Low-Dropout (LDO) linear regulator in the TO-263 THIN package which has an adjustable output voltage (set by external resistors)

    Contents:


    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP38501TJ-ADJEV
    		Evaluation Board for the LP38501Full production


     
    DistributorRegionQty
    		$40.00 each1

    Description:

    The LP38501TJ-ADJ is a 3A Low-Dropout (LDO) linear regulator in the thin TO-263 package which has an adjustable output voltage (set by external resistors).

    Contents:

    • LP38501 Evaluation Board
    • LP38501 Datasheet
    • Application Note 1781 for the LP38501TJ-ADJ Evaluation Board

    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP38501TS-ADJEV
    		3A FlexCap Low Dropout Linear Regulator for 2.7V to 5.5V InputsFull production


     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$37.50 each1

    Features:

    • FlexCap Stable with ceramic, tantalum, or aluminum capacitors
    • Adjustable output voltage
    • Low ground pin current
    • 25 nA quiescent current in shutdown mode
    • Guaranteed output current of 3A
    • Available in TO-263 package
    • Guaranteed VADJ accuracy of ± 3.5% @ 25°C
    • Over-Temperature and Over-Current protection
    • -40°C to 125°C operating TJ range
    • Enable pin (LP38501)
    LP38501TS-Adj Applications:
    • ASIC Power Supplies In:
           Printers, Graphics Cards, DVD Players, Set Top Boxes, Copiers, Routers
    • DSP and FPGA Power Supplies
    • SMPS Regulator
    • Conversion from 3.3V or 5V Rail
    LP38501TS-Adj Package Includes:
    • A LP38501TS-Adj Fully Assembled Evaluation Board
    • A LP38501-Adj Datasheet
    • A LP38501-Adj 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
    LP38501ATJ-ADJ/NOPB

    		789.308
    		TO-263 THIN51260DetailN/AN/A
    		NSUZXYTTE#
    LP38501A
    TJ-ADJ
    LP38501TJ-ADJ/NOPB

    		789.308
    789.308
    		TO-263 THIN51260DetailN/AN/A
    		NSUZXYTTE#
    LP38501
    TJ-ADJ
    LP38501TS-ADJ/NOPB

    		1448.647
    		TO-26353245DetailN/AN/A
    		NSUZXYTTE#
    LP38501
    TS-ADJ
    LP38501TSX-ADJ/NOPB

    		1448.647
    		TO-26353245DetailN/AN/A
    		NSUZXYTTE#
    LP38501
    TS-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 LP38501-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 LP38501-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)
    LP38501ATJ-ADJCMOS70213010015840003449464325
    LP38501TJ-ADJCMOS70213010015840003449464325
    LP38501TS-ADJCMOS70213010015840003449464325
    LP38501TSX-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 LP38501-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 LP38501-ADJ is located at RoHS Status.

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