National Semiconductor | High-performance Analog

 

 LP38690   
1A Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors from the PowerWise® Family		 Click link to Download

Features

  • 2.5% output accuracy (25°C)
  • Low dropout voltage: 450mV @ 1A (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 (LP38692)

    • Description

    The LP38690/2 low dropout CMOS linear regulators provide tight output tolerance (2.5% typical), extremely low dropout voltage (450mV @ 1A 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 T0-252 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: 450 mV (typ) @ 1A (typ. 5V out).

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

    Precision Output Voltage: 2.5% (25°C) accuracy.


    Applications

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

    • WEBENCH® LP38690
        Min   Max   Range  
      VIN – V    2.70 – 10.00V  
      VOUT V    1.25 – 9.00V  
      IOUT A    ≤ 1.00A  
      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
    LP38690-ADJ▲Adjustable Output
    LP38692▲Enable Pin
    LP38853▲See More At LDO.NATIONAL.COM



    Parameters / ValuesLP38690 LP38501-ADJ LP38503-ADJ LP38690-ADJ LP38692 LP38853
    Output Current1000 mA 3000 mA 3000 mA 1000 mA 1000 mA 3000 mA
    Output Min1.8, 5.0, 2.5, 3.3 Volt 0.6 Volt 0.6 Volt 1.25 Volt 1.8, 2.5, 3.3, 5 Volt 0.8 Volt
    Input Min Voltage2.75, 3.95, 3.3, 5.45 Volt 2.7 Volt 2.7 Volt 2.7 Volt 2.95, 2.7, 5.45, 3.75 Volt 1.04 Volt
    Input Max Voltage10 Volt 5.5 Volt 5.5 Volt 10 Volt 10 Volt 5.5 Volt
    Dropout Voltage0.45, 0.95, 0.8, 0.65 Volt 0.42 Volt 0.42 Volt 0.45 Volt 0.45, 0.95, 0.8, 0.65 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
    PSRR55 dB 58 dB 58 dB 55 dB 55 dB
    Voltage Noise (rms)70 uV 100 uV 100 uV 70 uV 70 uV
    Ceramic Capacitors StableYes Yes Yes Yes Yes
    Feedback Tolerance2.5 % 3.5 % 3.5 % 2.5 % 2.5 %
    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, 2.5, 3.3 Volt 1.8, 2.5, 3.3, 5 Volt
    Output Max1.8, 5.0, 2.5, 3.3 Volt 5 Volt 5 Volt 9 Volt 1.8, 2.5, 3.3, 5 Volt 1.8 Volt
    PowerWiseYes Yes Yes Yes
    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP38690DT-1.8/NOPB

    LP38690DT-1.8

    RoHS Status

    TO-252    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide475
    AVNET-EMWorldwide266
    DIGI-KEYWorldwide1637
    TAYLORAmericas475
    		$0.55 each at 1K+ pcsrail
    of
    75
    LP38690DT-2.5/NOPB

    LP38690DT-2.5

    RoHS Status

    TO-252    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide97
    AVNET-EMWorldwide123
    DIGI-KEYWorldwide912
    NEWARKAmericas36
    TAYLORAmericas97
    		$0.55 each at 1K+ pcsrail
    of
    75
    LP38690DT-3.3/NOPB

    LP38690DT-3.3

    RoHS Status

    TO-252    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide768
    AVNET-EMWorldwide2363
    CEACAsia Pacific3000
    DIGI-KEYWorldwide1530
    MOUSERWorldwide277
    NEWARKAmericas725
    RS COMPONENTSWorldwide20
    TAYLORAmericas3674
    		$0.55 each at 1K+ pcsrail
    of
    75
    LP38690DT-5.0/NOPB

    LP38690DT-5.0

    RoHS Status

    TO-252    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide581
    AVNET-EMWorldwide576
    DIGI-KEYWorldwide2928
    MOUSERWorldwide563
    NEWARKAmericas75
    TAYLORAmericas581
    		$0.55 each at 1K+ pcsrail
    of
    75
    LP38690DTX-1.8/NOPB

    LP38690DTX-1.8

    RoHS Status

    TO-252    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide2500
    		$0.55 each at 1K+ pcsreel
    of
    2500
    LP38690DTX-2.5/NOPB

    LP38690DTX-2.5

    RoHS Status

    TO-252    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.55 each at 1K+ pcsreel
    of
    2500
    LP38690DTX-3.3/NOPB

    LP38690DTX-3.3

    RoHS Status

    TO-252    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide2500
    DIGI-KEYWorldwide0
    MOUSERWorldwide2500
    		$0.55 each at 1K+ pcsreel
    of
    2500
    LP38690DTX-5.0/NOPB

    LP38690DTX-5.0

    RoHS Status

    TO-252    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide2500
    CEACAsia Pacific10000
    DIGI-KEYWorldwide0
    MOUSERWorldwide2498
    		$0.55 each at 1K+ pcsreel
    of
    2500
    LP38690SD-1.8/NOPB

    LP38690SD-1.8

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    AVNET-EMWorldwide894
    DIGI-KEYWorldwide1140
    TAYLORAmericas1000
    		$0.55 each at 1K+ pcsreel
    of
    1000
    LP38690SD-2.5/NOPB

    LP38690SD-2.5

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide1609
    MOUSERWorldwide716
    		$0.55 each at 1K+ pcsreel
    of
    1000
    LP38690SD-3.3/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide2033
    MOUSERWorldwide993
    NEWARKAmericas16
    TECHMOSAAsia Pacific3000
    		$0.55 each at 1K+ pcsreel
    of
    1000
    LP38690SD-5.0/NOPB

    LP38690SD-5.0

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide1902
    MOUSERWorldwide1000
    RSL MICROAsia Pacific10000
    		$0.55 each at 1K+ pcsreel
    of
    1000
    LP38690SDX-1.8/NOPB

    LP38690SDX-1.8

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.55 each at 1K+ pcsreel
    of
    4500
    LP38690SDX-2.5/NOPB

    LP38690SDX-2.5

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.55 each at 1K+ pcsreel
    of
    4500
    LP38690SDX-3.3/NOPB

    LP38690SDX-3.3

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.55 each at 1K+ pcsreel
    of
    4500
    LP38690SDX-5.0/NOPB

    LP38690SDX-5.0

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.55 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 LP38690.

    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 LP38690 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LP38690DT-1.8/NOPB

    LP38690DT-1.8
    		288.252
    289.002
    		TO-25232
    1    		260
    235    		DetailDownloadN/A
    		NSUZXYTT
    LP38690
    DT-1.8
    LP38690DT-2.5/NOPB

    LP38690DT-2.5
    		288.252
    289.002
    		TO-25232
    1    		260
    235    		DetailDownloadN/A
    		NSUZXYTT
    LP38690
    DT-2.5
    LP38690DT-3.3/NOPB

    LP38690DT-3.3
    		288.252
    289.002
    		TO-25232
    1    		260
    235    		DetailDownloadN/A
    		NSUZXYTT
    LP38690
    DT-3.3
    LP38690DT-5.0/NOPB

    LP38690DT-5.0
    		288.252
    289.002
    		TO-25232
    1    		260
    235    		DetailDownloadN/A
    		NSUZXYTT
    LP38690
    DT-5.0
    LP38690DTX-1.8/NOPB

    LP38690DTX-1.8
    		288.252
    289.002
    		TO-25232
    1    		260
    235    		DetailDownloadN/A
    		NSUZXYTT
    LP38690
    DT-1.8
    LP38690DTX-2.5/NOPB

    LP38690DTX-2.5
    		288.252
    289.002
    		TO-25232
    1    		260
    235    		DetailDownloadN/A
    		NSUZXYTT
    LP38690
    DT-2.5
    LP38690DTX-3.3/NOPB

    LP38690DTX-3.3
    		288.252
    289.002
    		TO-25232
    1    		260
    235    		DetailDownloadN/A
    		NSUZXYTT
    LP38690
    DT-3.3
    LP38690DTX-5.0/NOPB

    LP38690DTX-5.0
    		288.252
    289.002
    		TO-25232
    1    		260
    235    		DetailDownloadN/A
    		NSUZXYTT
    LP38690
    DT-5.0
    LP38690SD-1.8/NOPB

    LP38690SD-1.8
    		21.032
    21.102
    		LLP61
    1    		260
    260    		DetailDownloadN/A
    		ZXYTT
    L113B
    LP38690SD-2.5/NOPB

    LP38690SD-2.5
    		21.032
    21.102
    		LLP61
    1    		260
    260    		DetailDownloadN/A
    		ZXYTT
    L114B
    LP38690SD-3.3/NOPB

    		21.032
    		LLP61260DetailDownloadN/A
    		ZXYTT
    L115B
    LP38690SD-5.0/NOPB

    LP38690SD-5.0
    		21.032
    21.102
    		LLP61
    1    		260
    260    		DetailDownloadN/A
    		ZXYTT
    L116B
    LP38690SDX-1.8/NOPB

    LP38690SDX-1.8
    		21.032
    21.102
    		LLP61
    1    		260
    260    		DetailDownloadN/A
    		ZXYTT
    L113B
    LP38690SDX-2.5/NOPB

    LP38690SDX-2.5
    		21.032
    21.102
    		LLP61
    1    		260
    260    		DetailDownloadN/A
    		ZXYTT
    L114B
    LP38690SDX-3.3/NOPB

    LP38690SDX-3.3
    		21.032
    21.102
    		LLP61
    1    		260
    260    		DetailDownloadN/A
    		ZXYTT
    L115B
    LP38690SDX-5.0/NOPB

    LP38690SDX-5.0
    		21.032
    21.102
    		LLP61
    1    		260
    260    		DetailDownloadN/A
    		ZXYTT
    L116B

    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 LP38690.

    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 LP38690 is located at RoHS Status.

    CAD Symbols and Models
    Download LP38690 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LP38690DT-1.8ABCD15004268000639400011814314958
    LP38690DT-2.5ABCD15004268000639400011814314958
    LP38690DT-3.3ABCD15004268000639400011814314958
    LP38690DT-5.0ABCD15004268000639400011814314958
    LP38690DTX-1.8ABCD15004268000639400011814314958
    LP38690DTX-2.5ABCD15004268000639400011814314958
    LP38690DTX-3.3ABCD15004268000639400011814314958
    LP38690DTX-5.0ABCD15004268000639400011814314958
    LP38690SD-1.8ABCD15004268000639400011814314958
    LP38690SD-2.5ABCD15004268000639400011814314958
    LP38690SD-3.3ABCD15004268000639400011814314958
    LP38690SD-5.0ABCD15004268000639400011814314958
    LP38690SDX-1.8ABCD15004268000639400011814314958
    LP38690SDX-2.5ABCD15004268000639400011814314958
    LP38690SDX-3.3ABCD15004268000639400011814314958
    LP38690SDX-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 LP38690.

    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 LP38690 is located at RoHS Status.

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