National Semiconductor | High-performance Analog

 

 LP3962   
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
    LP38852▲New! National's LP38k Family Of High
    LP38855▲Performance LDOs Power Digital ICs
    LP38858▲See More At LDO.NATIONAL.COM



    Typical Application
    click for larger image


    		Block Diagram
    click for larger image



    Typical Performance
    click for larger image


    Parameters / ValuesLP3962 LP38852 LP38855 LP38858
    Output Current1500 mA 1500 mA 1500 mA 1500 mA
    Output Min1.8, 2.5, 3.3, 5 Volt 0.8 Volt 1.2, 0.8 Volt 1.2, 0.8 Volt
    Input Min Voltage2.5 Volt 0.93 Volt 1.38, 0.98 Volt 1.38, 0.98 Volt
    Input Max Voltage7 Volt 5.5 Volt 5.5 Volt 5.5 Volt
    Dropout Voltage0.38 Volt 0.130 Volt 0.130 Volt 0.18 Volt
    Adjustable OutputNo Yes No No
    Quiescent Current4 mA 10 mA 10 mA 10 mA
    On/Off PinYes Yes Yes No
    PowerGood / Error FlagYes 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, 5 Volt 1.2, 0.8 Volt 1.2, 0.8 Volt
    Output Max1.8, 2.5, 3.3, 5 Volt 1.8 Volt 1.2, 0.8 Volt 1.2, 0.8 Volt

    Datasheets
    TitleSizeDateOther
    Language
    LP3962 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
    LP3962EMP-1.8/NOPB

    LP3962EMP-1.8

    RoHS Status

    SOT-223    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide10461
    MOUSERWorldwide900
    		$1.08 each at 1K+ pcsreel
    of
    1000
    LP3962EMP-2.5/NOPB

    LP3962EMP-2.5

    RoHS Status

    SOT-223    		Full production
    Lead Time: 12 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    DIGI-KEYWorldwide3020
    MOUSERWorldwide999
    RS COMPONENTSWorldwide676
    TAYLORAmericas1000
    		$1.08 each at 1K+ pcsreel
    of
    1000
    LP3962EMP-3.3/NOPB

    LP3962EMP-3.3

    RoHS Status

    SOT-223    		Full production
    Lead Time: 16 weeks

     
    DistributorRegionQty
    ARROWWorldwide1686
    AVNET-EMWorldwide689
    DIGI-KEYWorldwide3105
    NEWARKAmericas885
    TAYLORAmericas1686
    		$1.08 each at 1K+ pcsreel
    of
    1000
    LP3962EMPX-1.8/NOPB

    LP3962EMPX-1.8

    RoHS Status

    SOT-223    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.08 each at 1K+ pcsreel
    of
    2000
    LP3962EMPX-2.5/NOPB

    LP3962EMPX-2.5

    RoHS Status

    SOT-223    		Full production
    Lead Time: 8 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.08 each at 1K+ pcsreel
    of
    2000
    LP3962ES-1.8/NOPB

    LP3962ES-1.8

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide240
    AVNET-EMWorldwide295
    DIGI-KEYWorldwide375
    TAYLORAmericas240
    		$1.30 each at 1K+ pcsrail
    of
    45
    LP3962ES-2.5/NOPB

    LP3962ES-2.5

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide134
    AVNET-EMWorldwide48
    DIGI-KEYWorldwide450
    TAYLORAmericas584
    		$1.30 each at 1K+ pcsrail
    of
    45
    LP3962ES-3.3/NOPB

    LP3962ES-3.3

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide418
    AVNET-EMWorldwide12
    DIGI-KEYWorldwide421
    NEWARKAmericas274
    TAYLORAmericas418
    		$1.30 each at 1K+ pcsrail
    of
    45
    LP3962ESX-1.8/NOPB

    LP3962ESX-1.8

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide500
    		$1.30 each at 1K+ pcsreel
    of
    500
    LP3962ESX-2.5/NOPB

    LP3962ESX-2.5

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide2500
    AVNET-EMWorldwide500
    DIGI-KEYWorldwide0
    MOUSERWorldwide440
    TAYLORAmericas2500
    		$1.30 each at 1K+ pcsreel
    of
    500
    LP3962ESX-3.3/NOPB

    LP3962ESX-3.3

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide4271
    AVNET-EMWorldwide2000
    DIGI-KEYWorldwide0
    MOUSERWorldwide500
    TAYLORAmericas4271
    		$1.30 each at 1K+ pcsreel
    of
    500
    LP3962ESX-5.0/NOPB

    LP3962ESX-5.0

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.30 each at 1K+ pcsreel
    of
    500
    LP3962ET-3.3/NOPB

    LP3962ET-3.3

    RoHS Status

    TO-220    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide258
    MOUSERWorldwide270
    		$1.22 each at 1K+ pcsrail
    of
    45

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LP3962EMP-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3962EMPX-3.3
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3962ES-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3962ET-2.5
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3962ET-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 LP3962.

    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 LP3962 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LP3962EMP-1.8/NOPB

    LP3962EMP-1.8
    		119.55
    120.002
    		SOT-22351
    1    		260
    260    		DetailDownloadN/A
    		XYTT
    LBCB
    LP3962EMP-2.5/NOPB

    LP3962EMP-2.5
    		119.548
    120
    		SOT-22351
    1    		260
    260    		DetailDownloadN/A
    		XYTT
    LBDB
    LP3962EMP-3.3/NOPB

    LP3962EMP-3.3
    		119.55
    120.002
    		SOT-22351
    1    		260
    260    		DetailDownloadN/A
    		XYTT
    LBEB
    LP3962EMPX-1.8/NOPB

    LP3962EMPX-1.8
    		119.55
    120.002
    		SOT-22351
    1    		260
    260    		DetailDownloadN/A
    		XYTT
    LBCB
    LP3962EMPX-2.5/NOPB

    LP3962EMPX-2.5
    		119.55
    120.002
    		SOT-22351
    1    		260
    260    		DetailDownloadN/A
    		XYTT
    LBDB
    LP3962ES-1.8/NOPB

    LP3962ES-1.8
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3962ES
    -1.8
    LP3962ES-2.5/NOPB

    LP3962ES-2.5
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3962ES
    -2.5
    LP3962ES-3.3/NOPB

    LP3962ES-3.3
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3962ES
    -3.3
    LP3962ESX-1.8/NOPB

    LP3962ESX-1.8
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3962ES
    -1.8
    LP3962ESX-2.5/NOPB

    LP3962ESX-2.5
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3962ES
    -2.5
    LP3962ESX-3.3/NOPB

    LP3962ESX-3.3
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3962ES
    -3.3
    LP3962ESX-5.0/NOPB

    LP3962ESX-5.0
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3962ES
    -5.0
    LP3962ET-3.3/NOPB

    LP3962ET-3.3
    		1957.896
    1908.876
    		TO-22051
    1    		NA
    NA    		DetailDownloadN/A
    		NSUZXYTTE#
    LP3962ET
    -3.3

    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 LP3962.

    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 LP3962 is located at RoHS Status.

    CAD Symbols and Models
    Download LP3962 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LP3962EMP-1.8CS065247473430552700011568301341
    LP3962EMP-2.5CS065247473430552700011568301341
    LP3962EMP-3.3CS065247473430552700011568301341
    LP3962EMPX-1.8CS065247473430552700011568301341
    LP3962EMPX-2.5CS065247473430552700011568301341
    LP3962ES-1.8CS065247473430552700011568301341
    LP3962ES-2.5CS065247473430552700011568301341
    LP3962ES-3.3CS065247473430552700011568301341
    LP3962ESX-1.8CS065247473430552700011568301341
    LP3962ESX-2.5CS065247473430552700011568301341
    LP3962ESX-3.3CS065247473430552700011568301341
    LP3962ESX-5.0CS065247473430552700011568301341
    LP3962ET-3.3CS065247473430552700011568301341

    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 LP3962.

    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 LP3962 is located at RoHS Status.

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LP3962EMP-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3962EMPX-3.3
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3962ES-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3962ET-2.5
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP3962ET-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009

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