National Semiconductor | High-performance Analog

 

 LMS1587   
3A Low Dropout Fast Response Regulators 		Click link to Download

Features

Fast transient response

  

Available in Adjustable, 1.5V, and 3.3V versions

  

Current limiting and thermal protection

  

Commercial temp. range

0°C to 125°C

Industrial temp. range

-40°C to 125°C

Line regulation

0.005% (typical)

Load regulation

0.05% (typical)

Direct replacement for LT™1585A/87

  

Description

The LMS1585A and LMS1587 are low dropout positive regulators with output load current of 5A and 3A respectively. Their low dropout voltage (1.2V) and fast transient response make them an excellent solution for low voltage microprocessor applications.

The LMS1585A/87 are available in adjustable versions, which can set the output voltage with only two external resistors. In addition, they are also available in 1.5V and 3.3V fixed voltage versions .

The LMS1585A/87 circuits include a zener trimmed bandgap reference, current limiting and thermal shutdown.

The LMS1585A/87 series are available in TO-220 and TO-263 packages.


Applications

  • Pentium™ processor supplies
  • PowerPC™ supplies
  • Other microprocessor supplies
  • Low voltage logic supplies

    •  

    ParametersValues
    Output Current 3000 mA
    Output Min 1.25, 3.3, 1.5 Volt
    Input Min Voltage 2.4, 2.5 Volt
    Input Max Voltage 13 Volt
    Dropout Voltage 1.15 Volt
    Adjustable Output No, Yes
    Quiescent Current 7 mA
    On/Off Pin No
    PowerGood / Error Flag No
    RegType LDO
    Temperature Min -40, 0 deg C
    Temperature Max 125 deg C
    Output Voltage Undefined, 3.3, 1.5 Volt
    Output Max 5.75, 3.3, 1.5 Volt
    Feedback Voltage 1.250 Volt

    Datasheets
    TitleSizeDateOther
    Language
    LMS1587 3A Low Dropout Fast Response Regulators514
    Kbytes    		6-Jun-05日本語  

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LMS1587CS-1.5/NOPB

    LMS1587CS-1.5

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide199
    AVNET-EMWorldwide385
    DIGI-KEYWorldwide454
    MOUSERWorldwide395
    NEWARKAmericas305
    RS COMPONENTSWorldwide87
    TAYLORAmericas199
    		$1.00 each at 1K+ pcsrail
    of
    45
    LMS1587CS-3.3/NOPB

    LMS1587CS-3.3

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide370
    AVNET-EMWorldwide240
    DIGI-KEYWorldwide279
    MOUSERWorldwide405
    RS COMPONENTSWorldwide135
    TAYLORAmericas370
    		$1.00 each at 1K+ pcsrail
    of
    45
    LMS1587CS-ADJ/NOPB

    LMS1587CS-ADJ

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide420
    DIGI-KEYWorldwide885
    FARNELLEurope and Asia198
    MOUSERWorldwide363
    NEWARKAmericas452
    RS COMPONENTSWorldwide117
    TECHMOSAAsia Pacific1800
    		$1.00 each at 1K+ pcsrail
    of
    45
    LMS1587CSX-1.5/NOPB

    LMS1587CSX-1.5

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide1000
    AVNET-EMWorldwide500
    DIGI-KEYWorldwide0
    MOUSERWorldwide475
    TAYLORAmericas3061
    TECHMOSAAsia Pacific1000
    		$1.00 each at 1K+ pcsreel
    of
    500
    LMS1587CSX-3.3/NOPB

    LMS1587CSX-3.3

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide1535
    AVNET-EMWorldwide500
    DIGI-KEYWorldwide0
    MOUSERWorldwide500
    TAYLORAmericas1535
    		$1.00 each at 1K+ pcsreel
    of
    500
    LMS1587CSX-ADJ/NOPB

    LMS1587CSX-ADJ

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide500
    AVNET-EMWorldwide314
    DIGI-KEYWorldwide0
    MOUSERWorldwide500
    TAYLORAmericas500
    TECHMOSAAsia Pacific4000
    		$1.00 each at 1K+ pcsreel
    of
    500
    LMS1587CT-3.3/NOPB

    LMS1587CT-3.3

    RoHS Status

    TO-220    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide450
    AVNET-EMWorldwide200
    DIGI-KEYWorldwide399
    MOUSERWorldwide265
    RS COMPONENTSWorldwide142
    TAYLORAmericas450
    		$0.94 each at 1K+ pcsrail
    of
    45
    LMS1587CT-ADJ/NOPB

    LMS1587CT-ADJ

    RoHS Status

    TO-220    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide590
    AVNET-EMWorldwide345
    DIGI-KEYWorldwide76
    MOUSERWorldwide405
    RS COMPONENTSWorldwide110
    TAYLORAmericas590
    		$0.94 each at 1K+ pcsrail
    of
    45
    LMS1587IS-1.5/NOPB

    LMS1587IS-1.5

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide305
    AVNET-EMWorldwide237
    DIGI-KEYWorldwide0
    MOUSERWorldwide400
    TAYLORAmericas305
    		$1.00 each at 1K+ pcsrail
    of
    45
    LMS1587IS-3.3/NOPB

    LMS1587IS-3.3

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide407
    DIGI-KEYWorldwide1115
    MOUSERWorldwide262
    RS COMPONENTSWorldwide122
    		$1.00 each at 1K+ pcsrail
    of
    45
    LMS1587IS-ADJ/NOPB

    LMS1587IS-ADJ

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide330
    AVNET-EMWorldwide395
    DIGI-KEYWorldwide1038
    MOUSERWorldwide334
    TAYLORAmericas330
    		$1.00 each at 1K+ pcsrail
    of
    45
    LMS1587ISX-3.3/NOPB

    LMS1587ISX-3.3

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide715
    AVNET-EMWorldwide475
    DIGI-KEYWorldwide0
    MOUSERWorldwide441
    TAYLORAmericas715
    		$1.00 each at 1K+ pcsreel
    of
    500
    LMS1587ISX-ADJ/NOPB

    LMS1587ISX-ADJ

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide975
    DIGI-KEYWorldwide0
    MOUSERWorldwide500
    		$1.00 each at 1K+ pcsreel
    of
    500
    LMS1587IT-1.5/NOPB

    LMS1587IT-1.5

    RoHS Status

    TO-220    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.98 each at 1K+ pcsrail
    of
    45

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LMS1587CT-1.5
    		LMS1587CSX-1.5
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LMS1587I1.5 MDC
    		NONE
    		NATIONAL SEMICONDUCTOR
    		03 Dec 2008
    LMS1587I1.5 MWC
    		NONE
    		NATIONAL SEMICONDUCTOR
    		03 Dec 2008
    LMS1587ISX-1.5
    		LMS1587CSX-1.5
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LMS1587ISXADJEP
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LMS1587IT-3.3
    		LMS1587CSX-3.3
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LMS1587IT-ADJ
    		LMS1587ISX-ADJ
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009

    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 LMS1587.

    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 LMS1587 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LMS1587CS-1.5/NOPB

    LMS1587CS-1.5
    		1289.225
    1289.976
    		TO-26333
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LMS1587
    CS-1.5
    LMS1587CS-3.3/NOPB

    LMS1587CS-3.3
    		1289.225
    1289.976
    		TO-26333
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LMS1587
    CS-3.3
    LMS1587CS-ADJ/NOPB

    LMS1587CS-ADJ
    		1289.225
    1289.976
    		TO-26333
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LMS1587
    CS-ADJ
    LMS1587CSX-1.5/NOPB

    LMS1587CSX-1.5
    		1289.225
    1289.976
    		TO-26333
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LMS1587
    CS-1.5
    LMS1587CSX-3.3/NOPB

    LMS1587CSX-3.3
    		1289.225
    1289.976
    		TO-26333
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LMS1587
    CS-3.3
    LMS1587CSX-ADJ/NOPB

    LMS1587CSX-ADJ
    		1289.225
    1289.976
    		TO-26333
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LMS1587
    CS-ADJ
    LMS1587CT-3.3/NOPB

    LMS1587CT-3.3
    		1991.806
    1993.446
    		TO-22031
    1    		NA
    NA    		DetailDownloadN/A
    		NSUZXYTTE#
    LMS1587
    CT-3.3
    LMS1587CT-ADJ/NOPB

    LMS1587CT-ADJ
    		1991.805
    1993.446
    		TO-22031
    1    		NA
    NA    		DetailDownloadN/A
    		NSUZXYTTE#
    LMS1587
    CT-ADJ
    LMS1587IS-1.5/NOPB

    LMS1587IS-1.5
    		1289.225
    1289.976
    		TO-26333
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LMS1587
    IS-1.5
    LMS1587IS-3.3/NOPB

    LMS1587IS-3.3
    		1289.225
    1289.976
    		TO-26333
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LMS1587
    IS-3.3
    LMS1587IS-ADJ/NOPB

    LMS1587IS-ADJ
    		1289.225
    1289.976
    		TO-26333
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LMS1587
    IS-ADJ
    LMS1587ISX-3.3/NOPB

    LMS1587ISX-3.3
    		1289.225
    1289.976
    		TO-26333
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LMS1587
    IS-3.3
    LMS1587ISX-ADJ/NOPB

    LMS1587ISX-ADJ
    		1289.225
    1289.976
    		TO-26333
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LMS1587
    IS-ADJ
    LMS1587IT-1.5/NOPB

    LMS1587IT-1.5
    		1991.806
    1993.446
    		TO-22031
    1    		NA
    NA    		DetailDownloadN/A
    		NSUZXYTTE#
    LMS1587
    IT-1.5

    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 LMS1587.

    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 LMS1587 is located at RoHS Status.

    Design Tools
    TitleSizeDate
    LMX158x Qualification Package684 Kbytes17-Apr-2000

    CAD Symbols and Models
    Download LMS1587 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LMS1587CS-1.5LB30003437100416450011181688246
    LMS1587CS-3.3LB30003437100416450011181688246
    LMS1587CS-ADJLB30003437100416450011181688246
    LMS1587CSX-1.5LB30003437100416450011181688246
    LMS1587CSX-3.3LB30003437100416450011181688246
    LMS1587CSX-ADJLB30003437100416450011181688246
    LMS1587CT-3.3LB30003437100416450011181688246
    LMS1587CT-ADJLB30003437100416450011181688246
    LMS1587IS-1.5LB30003437100416450011181688246
    LMS1587IS-3.3LB30003437100416450011181688246
    LMS1587IS-ADJLB30003437100416450011181688246
    LMS1587ISX-3.3LB30003437100416450011181688246
    LMS1587ISX-ADJLB30003437100416450011181688246
    LMS1587IT-1.5LB30003437100416450011181688246

    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 LMS1587.

    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 LMS1587 is located at RoHS Status.

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LMS1587CT-1.5
    		LMS1587CSX-1.5
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LMS1587I1.5 MDC
    		NONE
    		NATIONAL SEMICONDUCTOR
    		03 Dec 2008
    LMS1587I1.5 MWC
    		NONE
    		NATIONAL SEMICONDUCTOR
    		03 Dec 2008
    LMS1587ISX-1.5
    		LMS1587CSX-1.5
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LMS1587ISXADJEP
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LMS1587IT-3.3
    		LMS1587CSX-3.3
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LMS1587IT-ADJ
    		LMS1587ISX-ADJ
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009

    [Information as of 8-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation