National Semiconductor | High-performance Analog

 

 LP38500-ADJ   
1.5A 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 1.5A
  • Available in TO-263, TO-263 THIN, and LLP-8 packages
  • Guaranteed VADJ accuracy of ±1.5% @ 25°C (A Grade)
  • Guaranteed accuracy of ±3.5% @ 25°C (STD)
  • Over-Temperature and Over-Current protection
  • −40°C to +125°C operating TJ range
  • Enable pin (LP38502)

    • 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 LP38500/2 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 LP38500/2 has low quiescent current that changes little with load current.

    Ground Pin Current: Typically 2 mA at 1.5A 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® LP38500
        Min   Max   Range  
      Vin V    2.70 – 5.50V  
      Vout V    0.60 – 5.00V  
      Iout A    ≤ 1.50A  
      Ambient Temp °C    ≤ 100°C  
    Footprint BOM Cost Efficiency
     
     
     
     
    What are WEBENCH® tools?

    Also Recommended
    LP38501-ADJ▲Upgrade To 3A, With Added Enable Pin
    LP38502-ADJ▲Identical To LP38500, With Added Enable Pin
    LP38503-ADJ▲Upgrade To 3A


    PSRR

    Typical Application
    *click for larger image

    PSRR

    		Block Diagram
    *click for larger image



    Typical Performance
    *click for larger image


    Parameters / ValuesLP38500-ADJ LP38501-ADJ LP38502-ADJ LP38503-ADJ
    Output Current1500 mA 3000 mA 1500 mA 3000 mA
    Output Min0.6 Volt 0.6 Volt 0.6 Volt 0.6 Volt
    Input Min Voltage2.7 Volt 2.7 Volt 2.7 Volt 2.7 Volt
    Input Max Voltage5.5 Volt 5.5 Volt 5.5 Volt 5.5 Volt
    Dropout Voltage0.220 Volt 0.42 Volt 0.220 Volt 0.42 Volt
    Adjustable OutputYes Yes Yes Yes
    Quiescent Current2 mA 2 mA 2 mA 2 mA
    PSRR58 dB 58 dB 58 dB 58 dB
    Voltage Noise (rms)100 uV 100 uV 100 uV 100 uV
    Ceramic Capacitors StableYes Yes Yes Yes
    Feedback Tolerance3.5 % 3.5 % 3.5 % 3.5 %
    On/Off PinNo Yes Yes No
    PowerGood / Error FlagNo No No No
    RegTypeLDO LDO LDO LDO
    Temperature Min-40 deg C -40 deg C -40 deg C -40 deg C
    Temperature Max125 deg C 125 deg C 125 deg C 125 deg C
    Special FeaturesFlexcap LDO FlexCap LDO Flexcap LDO FlexCap LDO
    Output Max5.1 Volt 5 Volt 5.1 Volt 5 Volt
    Feedback Voltage0.600 Volt 0.600 Volt 0.600 Volt 0.600 Volt

    Datasheets
    TitleSizeDateOther
    Language
    LP38500-ADJ 1.5A FlexCap Low Dropout Linear Regulator for 2.7V to 5.5V Inputs371
    Kbytes    		30-Oct-09日本語  

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP38500ASD-ADJ/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide2758
    MOUSERWorldwide290
    TAYLORAmericas1000
    		$0.70 each at 1K+ pcsreel
    of
    1000
    LP38500ASDX-ADJ/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.70 each at 1K+ pcsreel
    of
    4500
    LP38500ATJ-ADJ/NOPB


    RoHS Status

    TO-263 THIN    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide1941
    MOUSERWorldwide967
    NEWARKAmericas1000
    		$0.70 each at 1K+ pcsreel
    of
    1000
    LP38500SD-ADJ/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    AVNET-EMWorldwide1682
    DIGI-KEYWorldwide1505
    FARNELLEurope and Asia118
    MOUSERWorldwide890
    NEWARKAmericas821
    TAYLORAmericas1000
    		$0.70 each at 1K+ pcsreel
    of
    1000
    LP38500SDX-ADJ/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.70 each at 1K+ pcsreel
    of
    4500
    LP38500TJ-ADJ/NOPB


    RoHS Status

    TO-263 THIN    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide2011
    MOUSERWorldwide1000
    TAYLORAmericas1000
    		$0.70 each at 1K+ pcsreel
    of
    1000
    LP38500TS-ADJ/NOPB


    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1125
    AVNET-EMWorldwide607
    DIGI-KEYWorldwide431
    FARNELLEurope and Asia158
    MOUSERWorldwide495
    NEWARKAmericas258
    TAYLORAmericas1125
    		$0.70 each at 1K+ pcsrail
    of
    45
    LP38500TSX-ADJ/NOPB


    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide990
    DIGI-KEYWorldwide0
    		$0.70 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 LP38500-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 LP38500-ADJ is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LP38500ASD-ADJ/NOPB

    		17.85
    		LLP81260DetailN/AN/A
    		XYTT
    LKUA
    LP38500ASDX-ADJ/NOPB

    		17.85
    17.903
    		LLP81260DetailN/AN/A
    		XYTT
    LKUA
    LP38500ATJ-ADJ/NOPB

    		789.308
    		TO-263 THIN51260DetailN/AN/A
    		NSUZXYTTE#
    LP38500
    ATJ-ADJ
    LP38500SD-ADJ/NOPB

    		17.85
    17.903
    		LLP81260DetailN/AN/A
    		XYTT
    LKUB
    LP38500SDX-ADJ/NOPB

    		17.85
    17.903
    		LLP81260DetailN/AN/A
    		XYTT
    LKUB
    LP38500TJ-ADJ/NOPB

    		789.308
    789.308
    		TO-263 THIN51260DetailN/AN/A
    		NSUZXYTTE#
    LP38500
    TJ-ADJ
    LP38500TS-ADJ/NOPB

    		1448.647
    N/A
    		TO-26353245DetailN/AN/A
    		NSUZXYTTE#
    LP38500
    TS-ADJ
    LP38500TSX-ADJ/NOPB

    		1448.647
    N/A
    		TO-26353245DetailN/AN/A
    		NSUZXYTTE#
    LP38500
    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 LP38500-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 LP38500-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)
    LP38500ASD-ADJCMOS70213010015840003449464325
    LP38500ASDX-ADJCMOS70213010015840003449464325
    LP38500ATJ-ADJCMOS70213010015840003449464325
    LP38500SD-ADJCMOS70213010015840003449464325
    LP38500SDX-ADJCMOS70213010015840003449464325
    LP38500TJ-ADJCMOS70213010015840003449464325
    LP38500TS-ADJCMOS70213010015840003449464325
    LP38500TSX-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 LP38500-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 LP38500-ADJ is located at RoHS Status.

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