National Semiconductor | High-performance Analog

 

 LP3965   
1.5A Fast Ultra Low Dropout Linear Regulator 		Click link to Download

Features
  • Ultra low dropout voltage
  • Low ground pin current
  • Load regulation of 0.04%
  • 15µA quiescent current in shutdown mode
  • Guaranteed output current of 1.5A DC
  • Available in SOT-223,TO-263 and TO-220 packages
  • Output voltage accuracy ± 1.5%
  • Error# flag indicates output status (LP3962)
  • Sense option improves better load regulation (LP3965)
  • Extremely low output capacitor requirements
  • Overtemperature/overcurrent protection
  • -40°C to +125°C junction temperature range

    • Description

    The LP3962/LP3965 series of fast ultra low-dropout linear regulators operate from a +2.5V to +7.0V input supply. Wide range of preset output voltage options are available. These ultra low dropout linear regulators respond very fast to step changes in load which makes them suitable for low voltage microprocessor applications. The LP3962/LP3965 are developed on a CMOS process which allows low quiescent current operation independent of output load current. This CMOS process also allows the LP3962/LP3965 to operate under extremely low dropout conditions.

    Dropout Voltage: Ultra low dropout voltage; typically 38mV at 150mA load current and 380mV at 1.5A load current.

    Ground Pin Current: Typically 5mA at 1.5A load current.

    Shutdown Mode: Typically 15µA quiescent current when the shutdown pin is pulled low.

    Error# Flag: Error# flag goes low when the output voltage drops 10% below nominal value (for LP3962).

    SENSE: Sense pin improves regulation at remote loads. (For LP3965)

    Precision Output Voltage: Multiple output voltage options are available ranging from 1.2V to 5.0V and adjustable (LP3965), with a guaranteed accuracy of ±1.5% at room temperature, and ±3.0% over all conditions (varying line, load, and temperature).


    Applications

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

    • Also Recommended
    LP3855▲Stable W/ Ceramic Caps, Has Only Half The Dropout Voltage
    LP3875▲Utilizes Smaller Input And Output Capacitors
    LP3892▲For Input Voltages As Low As 1.5V, 1.8V, 2.0V And 2.5V



    Typical Application
    click for larger image


    		Block Diagram
    click for larger image



    Typical Performance
    click for larger image


    Parameters / ValuesLP3965 LP3855 LP3875 LP3892
    Output Current1500 mA 1500 mA 1500 mA 1500 mA
    Output Min1.8, 2.5, 3.3, 1.215 Volt 1.8, 2.5, 3.3, 5 Volt 1.8, 2.5, 3.3, 5 Volt 1.8, 1.2, 1.5 Volt
    Input Min Voltage2.5 Volt 2.5 Volt 2.5 Volt 1.94, 1.34, 1.64 Volt
    Input Max Voltage7 Volt 7 Volt 7 Volt 5.5 Volt
    Dropout Voltage0.38 Volt 0.24 Volt 0.38 Volt 0.14 Volt
    Adjustable OutputNo, Yes No No No
    Quiescent Current4 mA 3 mA 6 mA 4 mA
    On/Off PinYes Yes Yes Yes
    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
    Output Voltage1.8, 2.5, 3.3 Volt 1.8, 2.5, 3.3, 5 Volt 1.8, 2.5, 3.3, 5 Volt 1.8, 1.2, 1.5 Volt
    Output Max1.8, 2.5, 3.3, 5 Volt 1.8, 2.5, 3.3, 5 Volt 1.8, 2.5, 3.3, 5 Volt 1.8, 1.2, 1.5 Volt

    Datasheets
    TitleSizeDateOther
    Language
    LP3965 1.5A Fast Ultra Low Dropout Linear Regulator914
    Kbytes    		15-Sep-06日本語  

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP3965EMP-1.8/NOPB

    LP3965EMP-1.8

    RoHS Status

    SOT-223    		Full production
    Lead Time: 8 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide2604
    NEWARKAmericas256
    RS COMPONENTSWorldwide889
    		$1.21 each at 1K+ pcsreel
    of
    1000
    LP3965EMP-2.5/NOPB

    LP3965EMP-2.5

    RoHS Status

    SOT-223    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    AVNET-EMWorldwide2150
    DIGI-KEYWorldwide872
    MOUSERWorldwide1000
    NEWARKAmericas209
    RS COMPONENTSWorldwide653
    TAYLORAmericas1000
    TECHMOSAAsia Pacific1000
    		$1.21 each at 1K+ pcsreel
    of
    1000
    LP3965EMP-3.3/NOPB

    LP3965EMP-3.3

    RoHS Status

    SOT-223    		Full production
    Lead Time: 8 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide997
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide1627
    MOUSERWorldwide941
    NEWARKAmericas1545
    RS COMPONENTSWorldwide25
    TAYLORAmericas997
    		$1.21 each at 1K+ pcsreel
    of
    1000
    LP3965EMP-ADJ/NOPB

    LP3965EMP-ADJ

    RoHS Status

    SOT-223    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1796
    DIGI-KEYWorldwide5613
    FARNELLEurope and Asia1140
    MOUSERWorldwide715
    NEWARKAmericas482
    RS COMPONENTSWorldwide564
    TAYLORAmericas5863
    		$1.21 each at 1K+ pcsreel
    of
    1000
    LP3965EMPX-1.8/NOPB

    LP3965EMPX-1.8

    RoHS Status

    SOT-223    		Full production
    Lead Time: 16 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.21 each at 1K+ pcsreel
    of
    2000
    LP3965EMPX-2.5/NOPB

    LP3965EMPX-2.5

    RoHS Status

    SOT-223    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.21 each at 1K+ pcsreel
    of
    2000
    LP3965EMPX-3.3/NOPB

    LP3965EMPX-3.3

    RoHS Status

    SOT-223    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.21 each at 1K+ pcsreel
    of
    2000
    LP3965EMPX-ADJ/NOPB

    LP3965EMPX-ADJ

    RoHS Status

    SOT-223    		Full production
    Lead Time: 16 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.21 each at 1K+ pcsreel
    of
    2000
    LP3965ES-1.8/NOPB

    LP3965ES-1.8

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide151
    DIGI-KEYWorldwide225
    RS COMPONENTSWorldwide236
    		$1.45 each at 1K+ pcsrail
    of
    45
    LP3965ES-2.5/NOPB

    LP3965ES-2.5

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide937
    AVNET-EMWorldwide311
    DIGI-KEYWorldwide1319
    NEWARKAmericas18
    TAYLORAmericas937
    		$1.45 each at 1K+ pcsrail
    of
    45
    LP3965ES-3.3/NOPB

    LP3965ES-3.3

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide147
    AVNET-EMWorldwide202
    DIGI-KEYWorldwide274
    RS COMPONENTSWorldwide14
    TAYLORAmericas147
    		$1.45 each at 1K+ pcsrail
    of
    45
    LP3965ES-ADJ/NOPB

    LP3965ES-ADJ

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide70
    AVNET-EMWorldwide159
    DIGI-KEYWorldwide466
    FARNELLEurope and Asia251
    NEWARKAmericas385
    RS COMPONENTSWorldwide77
    TAYLORAmericas1108
    		$1.45 each at 1K+ pcsrail
    of
    45
    LP3965ESX-1.8/NOPB

    LP3965ESX-1.8

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide500
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide0
    TAYLORAmericas500
    		$1.45 each at 1K+ pcsreel
    of
    500
    LP3965ESX-2.5/NOPB

    LP3965ESX-2.5

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide1000
    AVNET-EMWorldwide1500
    DIGI-KEYWorldwide0
    TAYLORAmericas1000
    TECHMOSAAsia Pacific500
    		$1.45 each at 1K+ pcsreel
    of
    500
    LP3965ESX-3.3/NOPB

    LP3965ESX-3.3

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide500
    		$1.45 each at 1K+ pcsreel
    of
    500
    LP3965ESX-ADJ/NOPB

    LP3965ESX-ADJ

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide2500
    AVNET-EMWorldwide249
    DIGI-KEYWorldwide0
    MOUSERWorldwide500
    RSL MICROAsia Pacific2500
    TAYLORAmericas2500
    TECHMOSAAsia Pacific1000
    		$1.45 each at 1K+ pcsreel
    of
    500
    LP3965ET-1.8/NOPB


    RoHS Status

    TO-220    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide125
    DIGI-KEYWorldwide229
    MOUSERWorldwide225
    		$1.45 each at 1K+ pcsrail
    of
    45
    LP3965ET-3.3/NOPB

    LP3965ET-3.3

    RoHS Status

    TO-220    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide79
    RS COMPONENTSWorldwide19
    		$1.45 each at 1K+ pcsrail
    of
    45
    LP3965ET-ADJ/NOPB

    LP3965ET-ADJ

    RoHS Status

    TO-220    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide10
    AVNET-EMWorldwide145
    DIGI-KEYWorldwide822
    RS COMPONENTSWorldwide32
    TAYLORAmericas10
    		$1.45 each at 1K+ pcsrail
    of
    45

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LP3965EMP-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3965EMPX-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3965ES-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3965ESX-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3965ET-2.5
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3965ET-5.0
    		NONE
    		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 LP3965.

    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 LP3965 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LP3965EMP-1.8/NOPB

    LP3965EMP-1.8
    		119.548
    120.002
    		SOT-22351
    1    		260
    260    		DetailDownloadN/A
    		XYTT
    LBKB
    LP3965EMP-2.5/NOPB

    LP3965EMP-2.5
    		119.548
    120.002
    		SOT-22351
    1    		260
    260    		DetailDownloadN/A
    		XYTT
    LBLB
    LP3965EMP-3.3/NOPB

    LP3965EMP-3.3
    		119.55
    120
    		SOT-22351
    1    		260
    260    		DetailDownloadN/A
    		XYTT
    LBNB
    LP3965EMP-ADJ/NOPB

    LP3965EMP-ADJ
    		119.548
    120.002
    		SOT-22351
    1    		260
    260    		DetailDownloadN/A
    		XYTT
    LBRB
    LP3965EMPX-1.8/NOPB

    LP3965EMPX-1.8
    		119.55
    120.002
    		SOT-22351
    1    		260
    260    		DetailDownloadN/A
    		XYTT
    LBKB
    LP3965EMPX-2.5/NOPB

    LP3965EMPX-2.5
    		119.55
    120
    		SOT-22351
    1    		260
    260    		DetailDownloadN/A
    		XYTT
    LBLB
    LP3965EMPX-3.3/NOPB

    LP3965EMPX-3.3
    		119.55
    120.002
    		SOT-22351
    1    		260
    260    		DetailDownloadN/A
    		XYTT
    LBNB
    LP3965EMPX-ADJ/NOPB

    LP3965EMPX-ADJ
    		119.55
    120.002
    		SOT-22351
    1    		260
    260    		DetailDownloadN/A
    		XYTT
    LBRB
    LP3965ES-1.8/NOPB

    LP3965ES-1.8
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3965ES
    -1.8
    LP3965ES-2.5/NOPB

    LP3965ES-2.5
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3965ES
    -2.5
    LP3965ES-3.3/NOPB

    LP3965ES-3.3
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3965ES
    -3.3
    LP3965ES-ADJ/NOPB

    LP3965ES-ADJ
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3965ES
    -ADJ
    LP3965ESX-1.8/NOPB

    LP3965ESX-1.8
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3965ES
    -1.8
    LP3965ESX-2.5/NOPB

    LP3965ESX-2.5
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3965ES
    -2.5
    LP3965ESX-3.3/NOPB

    LP3965ESX-3.3
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3965ES
    -3.3
    LP3965ESX-ADJ/NOPB

    LP3965ESX-ADJ
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3965ES
    -ADJ
    LP3965ET-1.8/NOPB

    		1957.896
    1908.876
    		TO-22051NADetailDownloadN/A
    		NSUZXYTTE#
    LP3965ET
    -1.8
    LP3965ET-3.3/NOPB

    LP3965ET-3.3
    		1957.896
    1908.876
    		TO-22051
    1    		NA
    NA    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3965ET
    -3.3
    LP3965ET-ADJ/NOPB

    LP3965ET-ADJ
    		1905.986
    1908.876
    		TO-22051
    1    		NA
    NA    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3965ET
    -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 LP3965.

    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 LP3965 is located at RoHS Status.

    CAD Symbols and Models
    Download LP3965 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LP3965EMP-1.8CS065247473430552700011568301341
    LP3965EMP-2.5CS065247473430552700011568301341
    LP3965EMP-3.3CS065247473430552700011568301341
    LP3965EMP-ADJCS065247473430552700011568301341
    LP3965EMPX-1.8CS065247473430552700011568301341
    LP3965EMPX-2.5CS065247473430552700011568301341
    LP3965EMPX-3.3CS065247473430552700011568301341
    LP3965EMPX-ADJCS065247473430552700011568301341
    LP3965ES-1.8CS065247473430552700011568301341
    LP3965ES-2.5CS065247473430552700011568301341
    LP3965ES-3.3CS065247473430552700011568301341
    LP3965ES-ADJCS065247473430552700011568301341
    LP3965ESX-1.8CS065247473430552700011568301341
    LP3965ESX-2.5CS065247473430552700011568301341
    LP3965ESX-3.3CS065247473430552700011568301341
    LP3965ESX-ADJCS065247473430552700011568301341
    LP3965ET-1.8CS065247473430552700011568301341
    LP3965ET-3.3CS065247473430552700011568301341
    LP3965ET-ADJCS065247473430552700011568301341

    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 LP3965.

    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 LP3965 is located at RoHS Status.

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LP3965EMP-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3965EMPX-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3965ES-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3965ESX-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3965ET-2.5
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3965ET-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009

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