National Semiconductor | High-performance Analog

 

 LM3490   
100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF 		Click link to Download

Features

  • 3.3, 5, 12, and 15V versions available
  • Logic-controlled ON/ ^OFF
  • Packaged in the tiny 5-lead SOT-23 package

    • Description

    The LM3490 is an integrated linear voltage regulator. It features operation from an input as high as 30V and a guaranteed maximum dropout of 1.2V at the full 100 mA load. Standard packaging for the LM3490 is the 5-lead SOT-23 package. A logic-controlled ON/ ^OFF feature makes the LM3490 ideal for powering subsystems ON and OFF as needed.

    The 5, 12, and 15V members of the LM3490 series are intended as tiny alternatives to industry standard LM78LXX series and similar devices. The 1.2V quasi low dropout of LM3490 series devices makes them a nice fit in many applications where the 2 to 2.5V dropout of LM78LXX series devices precludes their (LM78LXX series devices) use.

    The LM3490 series features a 3.3V member. The SOT packaging and quasi low dropout features of the LM3490 series converge in this device to provide a very nice, very tiny 3.3V, 100 mA bias supply that regulates directly off the system 5V±5% power supply.

    Key Specification

  • 30V maximum input for operation
  • 1.2V guaranteed maximum dropout over full load and temperature ranges
  • 100 mA guaranteed load current
  • ±5% guaranteed output voltage tolerance over full load and temperature ranges
  • −40 to +125°C junction temperature range for operation


    • Applications

  • Tiny alternative to LM78LXX series and similar devices
  • Tiny 5V±5% to 3.3V, 100 mA converter
  • Post regulator for switching DC/DC converter
  • Bias supply for analog circuits




    • Typical Application
    click for larger image


    		Connection Diagram
    click for larger image



    Typical Performance
    click for larger image


     

    ParametersValues
    Output Current 100 mA
    Output Min 3.3, 12, 5 Volt
    Input Max Voltage 30 Volt
    Adjustable Output No
    On/Off Pin Yes
    PowerGood / Error Flag No
    RegType QuasiLDO
    Temperature Min -40 deg C
    Temperature Max 125 deg C
    Output Max 3.3, 12, 5 Volt
    Output Voltage 3.3, 12, 5 Volt

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM3490IM5-12/NOPB

    LM3490IM5-12

    RoHS Status

    SOT-23    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1519
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide3781
    FARNELLEurope and Asia243
    MOUSERWorldwide1981
    NEWARKAmericas907
    TAYLORAmericas1519
    		$0.35 each at 1K+ pcsreel
    of
    1000
    LM3490IM5-3.3/NOPB

    LM3490IM5-3.3

    RoHS Status

    SOT-23    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide32276
    MOUSERWorldwide1865
    NEWARKAmericas139
    		$0.35 each at 1K+ pcsreel
    of
    1000
    LM3490IM5-5.0/NOPB

    LM3490IM5-5.0

    RoHS Status

    SOT-23    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide6000
    AVNET-EMWorldwide2000
    DIGI-KEYWorldwide4438
    MOUSERWorldwide1990
    TAYLORAmericas6000
    		$0.35 each at 1K+ pcsreel
    of
    1000
    LM3490IM5X-12/NOPB

    LM3490IM5X-12

    RoHS Status

    SOT-23    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.35 each at 1K+ pcsreel
    of
    3000
    LM3490IM5X-5.0/NOPB

    LM3490IM5X-5.0

    RoHS Status

    SOT-23    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.35 each at 1K+ pcsreel
    of
    3000

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LM3490IM5-15
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM3490IM5X-15
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM3490IM5X-3.3
    		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 LM3490.

    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 LM3490 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LM3490IM5-12/NOPB

    LM3490IM5-12
    		14.696
    14.801
    		SOT-2351
    1    		260
    260    		DetailDownloadN/A
    		L80B
    XTT
    LM3490IM5-3.3/NOPB

    LM3490IM5-3.3
    		14.696
    14.801
    		SOT-2351
    1    		260
    260    		DetailDownloadN/A
    		L78B
    XTT
    LM3490IM5-5.0/NOPB

    LM3490IM5-5.0
    		14.696
    14.801
    		SOT-2351
    1    		260
    260    		DetailDownloadN/A
    		L79B
    XTT
    LM3490IM5X-12/NOPB

    LM3490IM5X-12
    		14.696
    14.801
    		SOT-2351
    1    		260
    260    		DetailDownloadN/A
    		L80B
    XTT
    LM3490IM5X-5.0/NOPB

    LM3490IM5X-5.0
    		14.696
    14.801
    		SOT-2351
    1    		260
    260    		DetailDownloadN/A
    		L79B
    XTT

    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 LM3490.

    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 LM3490 is located at RoHS Status.

    CAD Symbols and Models
    Download LM3490 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM3490IM5-12LB30003437100416450011181688246
    LM3490IM5-3.3LB30003437100416450011181688246
    LM3490IM5-5.0LB30003437100416450011181688246
    LM3490IM5X-12LB30003437100416450011181688246
    LM3490IM5X-5.0LB30003437100416450011181688246

    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 LM3490.

    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 LM3490 is located at RoHS Status.

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LM3490IM5-15
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM3490IM5X-15
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM3490IM5X-3.3
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009

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