National Semiconductor | High-performance Analog

 

 LP38691   
500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors from the PowerWise® Family		 Click link to Download

Features

  • All LLP options are available as AEC-Q100 Grade 1
  • 2.0% output accuracy (25°C)
  • Low dropout voltage: 250 mV @ 500mA (typ, 5V out)
  • Wide input voltage range (2.7V to 10V)
  • Precision (trimmed) bandgap reference
  • Guaranteed specs for -40°C to +125°C
  • 1µA off-state quiescent current
  • Thermal overload protection
  • Foldback current limiting
  • T0-252, SOT-223 and 6-Lead LLP packages
  • Enable pin (LP38693)

    • Description

    The LP38691/3 low dropout CMOS linear regulators provide tight output tolerance (2.0% typical), extremely low dropout voltage (250 mV @ 500mA load current, VOUT = 5V), and excellent AC performance utilizing ultra low ESR ceramic output capacitors.

    The low thermal resistance of the LLP, SOT-223 and TO-252 packages allow the full operating current to be used even in high ambient temperature environments.

    The use of a PMOS power transistor means that no DC base drive current is required to bias it allowing ground pin current to remain below 100 µA regardless of load current, input voltage, or operating temperature.

    Dropout Voltage: 250 mV (typ) @ 500mA (typ. 5V out).

    Ground Pin Current: 55 µA (typ) at full load.

    Precision Output Voltage: 2.0% (25°C) accuracy.


    Applications

  • Hard Disk Drives
  • Notebook Computers
  • Battery Powered Devices
  • Portable Instrumentation

    • WEBENCH® LP38691
        Min   Max   Range  
      VIN – V    2.70 – 10.00V  
      VOUT V    1.25 – 9.00V  
      IOUT A    ≤ 0.50A  
      Ambient Temp °C    ≤ 100°C  
    Footprint BOM Cost Efficiency
    What are WEBENCH® tools?


    Also Recommended
    LP38501-ADJ▲New! National's LP38k Family Of High
    LP38503-ADJ▲Performance LDOs Power Digital ICs
    LP38691-ADJ▲Adjustable Output
    LP38693▲Enable Pin
    LP38853▲See More At LDO.NATIONAL.COM



    Parameters / ValuesLP38691 LP38501-ADJ LP38503-ADJ LP38691-ADJ LP38693 LP38853
    Output Current500 mA 3000 mA 3000 mA 500 mA 500 mA 3000 mA
    Input Min Voltage2.7 Volt 2.7 Volt 2.7 Volt 2.7 Volt 2.7 Volt 1.04 Volt
    Input Max Voltage10 Volt 5.5 Volt 5.5 Volt 10 Volt 10 Volt 5.5 Volt
    Dropout Voltage0.725, 0.450, 0.550 Volt 0.42 Volt 0.42 Volt 0.25 Volt 0.725, 0.450, 0.425, 0.550 Volt 0.240 Volt
    Adjustable OutputNo Yes Yes Yes No Yes
    Quiescent Current0.055 mA 2 mA 2 mA 0.055 mA 0.055 mA 10 mA
    On/Off PinNo Yes No No Yes Yes
    PowerGood / Error FlagNo No No No No No
    RegTypeLDO LDO LDO LDO LDO LDO
    Temperature Min-40 deg C -40 deg C -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 125 deg C 125 deg C
    Output Voltage1.8, 5.0, 5.5, 2.5, 3.3 Volt 1.8, 5.0, 2.5, 3.3 Volt
    AEC Q-100 Automotive Grade1 1 1
    AutomotiveYes Yes Yes
    PowerWiseYes Yes Yes

    Datasheets
    TitleSizeDateOther
    Language
    LP38691 500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors440
    Kbytes    		27-Jun-11   

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP38691DT-1.8/NOPB

    LP38691DT-1.8

    RoHS Status

    TO-252    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide450
    AVNET-EMWorldwide2697
    DIGI-KEYWorldwide78
    MOUSERWorldwide487
    RS COMPONENTSWorldwide25
    TAYLORAmericas916
    		$0.53 each at 1K+ pcsrail
    of
    75
    LP38691DT-2.5/NOPB

    LP38691DT-2.5

    RoHS Status

    TO-252    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide199
    AVNET-EMWorldwide240
    DIGI-KEYWorldwide599
    RS COMPONENTSWorldwide15
    TAYLORAmericas199
    		$0.53 each at 1K+ pcsrail
    of
    75
    LP38691DT-3.3/NOPB

    LP38691DT-3.3

    RoHS Status

    TO-252    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide3181
    AVNET-EMWorldwide546
    CEACAsia Pacific3525
    DIGI-KEYWorldwide527
    MOUSERWorldwide1240
    NEWARKAmericas478
    RS COMPONENTSWorldwide180
    TAYLORAmericas1656
    		$0.53 each at 1K+ pcsrail
    of
    75
    LP38691DT-5.0/NOPB

    LP38691DT-5.0

    RoHS Status

    TO-252    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide671
    AVNET-EMWorldwide411
    DIGI-KEYWorldwide3825
    MOUSERWorldwide485
    NEWARKAmericas35
    RS COMPONENTSWorldwide205
    TAYLORAmericas671
    TECHMOSAAsia Pacific1350
    		$0.53 each at 1K+ pcsrail
    of
    75
    LP38691DTX-1.8/NOPB

    LP38691DTX-1.8

    RoHS Status

    TO-252    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide2125
    AVNET-EMWorldwide2500
    DIGI-KEYWorldwide0
    MOUSERWorldwide1000
    TAYLORAmericas2125
    		$0.53 each at 1K+ pcsreel
    of
    2500
    LP38691DTX-2.5/NOPB

    LP38691DTX-2.5

    RoHS Status

    TO-252    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide2500
    DIGI-KEYWorldwide0
    MOUSERWorldwide2500
    		$0.53 each at 1K+ pcsreel
    of
    2500
    LP38691DTX-3.3/NOPB

    LP38691DTX-3.3

    RoHS Status

    TO-252    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide2500
    AVNET-EMWorldwide4950
    DIGI-KEYWorldwide0
    MOUSERWorldwide2480
    TAYLORAmericas2500
    		$0.53 each at 1K+ pcsreel
    of
    2500
    LP38691DTX-5.0/NOPB

    LP38691DTX-5.0

    RoHS Status

    TO-252    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide2500
    		$0.53 each at 1K+ pcsreel
    of
    2500
    LP38691QSD-1.8/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    AVNET-EMWorldwide1000
    TAYLORAmericas1000
    		$0.68 each at 1K+ pcsreel
    of
    1000
    LP38691QSD-2.5/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    AVNET-EMWorldwide1000
    TAYLORAmericas1000
    		$0.68 each at 1K+ pcsreel
    of
    1000
    LP38691QSD-3.3/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    AVNET-EMWorldwide1000
    TAYLORAmericas1000
    		$0.68 each at 1K+ pcsreel
    of
    1000
    LP38691QSD-5.0/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    AVNET-EMWorldwide1000
    TAYLORAmericas1000
    		$0.68 each at 1K+ pcsreel
    of
    1000
    LP38691QSDX-1.8/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     

    Contact your distributor
    		$0.68 each at 1K+ pcsreel
    of
    4500
    LP38691QSDX-2.5/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     

    Contact your distributor
    		$0.68 each at 1K+ pcsreel
    of
    4500
    LP38691QSDX-3.3/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     

    Contact your distributor
    		$0.68 each at 1K+ pcsreel
    of
    4500
    LP38691QSDX-5.0/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     

    Contact your distributor
    		$0.68 each at 1K+ pcsreel
    of
    4500
    LP38691SD-1.8/NOPB

    LP38691SD-1.8

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide2487
    MOUSERWorldwide956
    		$0.53 each at 1K+ pcsreel
    of
    1000
    LP38691SD-2.5/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide2000
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide3377
    MOUSERWorldwide990
    RSL MICROAsia Pacific9000
    TAYLORAmericas2000
    		$0.53 each at 1K+ pcsreel
    of
    1000
    LP38691SD-3.3/NOPB

    LP38691SD-3.3

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    AVNET-EMWorldwide2138
    DIGI-KEYWorldwide7925
    MOUSERWorldwide590
    TAYLORAmericas1000
    		$0.53 each at 1K+ pcsreel
    of
    1000
    LP38691SD-5.0/NOPB

    LP38691SD-5.0

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide3000
    DIGI-KEYWorldwide1576
    MOUSERWorldwide960
    NEWARKAmericas170
    		$0.53 each at 1K+ pcsreel
    of
    1000
    LP38691SDX-1.8/NOPB

    LP38691SDX-1.8

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.53 each at 1K+ pcsreel
    of
    4500
    LP38691SDX-2.5/NOPB

    LP38691SDX-2.5

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.53 each at 1K+ pcsreel
    of
    4500
    LP38691SDX-3.3/NOPB

    LP38691SDX-3.3

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.53 each at 1K+ pcsreel
    of
    4500
    LP38691SDX-5.0/NOPB

    LP38691SDX-5.0

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.53 each at 1K+ pcsreel
    of
    4500

    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 LP38691.

    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 LP38691 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LP38691DT-1.8/NOPB

    LP38691DT-1.8
    		288.252
    289.002
    		TO-25232
    1    		260
    235    		DetailDownloadN/A
    		NSUZXYTT
    LP38691
    DT-1.8
    LP38691DT-2.5/NOPB

    LP38691DT-2.5
    		288.252
    289.002
    		TO-25232
    1    		260
    235    		DetailDownloadN/A
    		NSUZXYTT
    LP38691
    DT-2.5
    LP38691DT-3.3/NOPB

    LP38691DT-3.3
    		288.252
    289.002
    		TO-25232
    1    		260
    235    		DetailDownloadN/A
    		NSUZXYTT
    LP38691
    DT-3.3
    LP38691DT-5.0/NOPB

    LP38691DT-5.0
    		288.252
    289.002
    		TO-25232
    1    		260
    235    		DetailDownloadN/A
    		NSUZXYTT
    LP38691
    DT-5.0
    LP38691DTX-1.8/NOPB

    LP38691DTX-1.8
    		288.252
    289.002
    		TO-25232
    1    		260
    235    		DetailDownloadN/A
    		NSUZXYTT
    LP38691
    DT-1.8
    LP38691DTX-2.5/NOPB

    LP38691DTX-2.5
    		288.252
    289.002
    		TO-25232
    1    		260
    235    		DetailDownloadN/A
    		NSUZXYTT
    LP38691
    DT-2.5
    LP38691DTX-3.3/NOPB

    LP38691DTX-3.3
    		288.252
    289.002
    		TO-25232
    1    		260
    235    		DetailDownloadN/A
    		NSUZXYTT
    LP38691
    DT-3.3
    LP38691DTX-5.0/NOPB

    LP38691DTX-5.0
    		288.252
    289.002
    		TO-25232
    1    		260
    235    		DetailDownloadN/A
    		NSUZXYTT
    LP38691
    DT-5.0
    LP38691QSD-1.8/NOPB

    		LLP61260DetailDownloadN/A
    		ZXYTT
    L256B
    LP38691QSD-2.5/NOPB

    		LLP61260DetailDownloadN/A
    		ZXYTT
    L257B
    LP38691QSD-3.3/NOPB

    		LLP61260DetailDownloadN/A
    		ZXYTT
    L258B
    LP38691QSD-5.0/NOPB

    		LLP61260DetailDownloadN/A
    		ZXYTT
    L259B
    LP38691QSDX-1.8/NOPB

    		LLP61260DetailDownloadN/A
    		ZXYTT
    L256B
    LP38691QSDX-2.5/NOPB

    		LLP61260DetailDownloadN/A
    		ZXYTT
    L257B
    LP38691QSDX-3.3/NOPB

    		LLP61260DetailDownloadN/A
    		ZXYTT
    L258B
    LP38691QSDX-5.0/NOPB

    		LLP61260DetailDownloadN/A
    		ZXYTT
    L259B
    LP38691SD-1.8/NOPB

    LP38691SD-1.8
    		21.032
    21.102
    		LLP61
    1    		260
    260    		DetailDownloadN/A
    		ZXYTT
    L118B
    LP38691SD-2.5/NOPB

    		21.032
    		LLP61260DetailDownloadN/A
    		ZXYTT
    L119B
    LP38691SD-3.3/NOPB

    LP38691SD-3.3
    		21.032
    21.102
    		LLP61
    1    		260
    260    		DetailDownloadN/A
    		ZXYTT
    L120B
    LP38691SD-5.0/NOPB

    LP38691SD-5.0
    		21.032
    21.102
    		LLP61
    1    		260
    260    		DetailDownloadN/A
    		ZXYTT
    L121B
    LP38691SDX-1.8/NOPB

    LP38691SDX-1.8
    		21.032
    21.102
    		LLP61
    1    		260
    260    		DetailDownloadN/A
    		ZXYTT
    L118B
    LP38691SDX-2.5/NOPB

    LP38691SDX-2.5
    		21.032
    21.102
    		LLP61
    1    		260
    260    		DetailDownloadN/A
    		ZXYTT
    L119B
    LP38691SDX-3.3/NOPB

    LP38691SDX-3.3
    		21.032
    21.102
    		LLP61
    1    		260
    260    		DetailDownloadN/A
    		ZXYTT
    L120B
    LP38691SDX-5.0/NOPB

    LP38691SDX-5.0
    		21.032
    21.102
    		LLP61
    1    		260
    260    		DetailDownloadN/A
    		ZXYTT
    L121B

    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 LP38691.

    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 LP38691 is located at RoHS Status.

    CAD Symbols and Models
    Download LP38691 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LP38691DT-1.8ABCD15004268000639400011814314958
    LP38691DT-2.5ABCD15004268000639400011814314958
    LP38691DT-3.3ABCD15004268000639400011814314958
    LP38691DT-5.0ABCD15004268000639400011814314958
    LP38691DTX-1.8ABCD15004268000639400011814314958
    LP38691DTX-2.5ABCD15004268000639400011814314958
    LP38691DTX-3.3ABCD15004268000639400011814314958
    LP38691DTX-5.0ABCD15004268000639400011814314958
    LP38691QSD-1.8ABCD15004268000639400011814314958
    LP38691QSD-2.5ABCD15004268000639400011814314958
    LP38691QSD-3.3ABCD15004268000639400011814314958
    LP38691QSD-5.0ABCD15004268000639400011814314958
    LP38691QSDX-1.8ABCD15004268000639400011814314958
    LP38691QSDX-2.5ABCD15004268000639400011814314958
    LP38691QSDX-3.3ABCD15004268000639400011814314958
    LP38691QSDX-5.0ABCD15004268000639400011814314958
    LP38691SD-1.8ABCD15004268000639400011814314958
    LP38691SD-2.5ABCD15004268000639400011814314958
    LP38691SD-3.3ABCD15004268000639400011814314958
    LP38691SD-5.0ABCD15004268000639400011814314958
    LP38691SDX-1.8ABCD15004268000639400011814314958
    LP38691SDX-2.5ABCD15004268000639400011814314958
    LP38691SDX-3.3ABCD15004268000639400011814314958
    LP38691SDX-5.0ABCD15004268000639400011814314958

    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 LP38691.

    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 LP38691 is located at RoHS Status.

    [Information as of 6-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation