National Semiconductor | High-performance Analog

 

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

Features

  • Output voltage range of 1.25V - 9V
  • 2.5% adjust pin voltage 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
  • SOT-223 and 6-Lead LLP packages
  • Enable pin (LP38692-ADJ)

    • Description

    The LP38690/2-ADJ low dropout CMOS linear regulators provide 2.5% precision reference voltage, 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 and SOT-223 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.

    Adjust Pin Voltage: 2.5% (25°C) accuracy.


    Applications

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

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



    Parameters / ValuesLP38690-ADJ LP38501-ADJ LP38503-ADJ LP38853
    Output Current1000 mA 3000 mA 3000 mA 3000 mA
    Output Min1.25 Volt 0.6 Volt 0.6 Volt 0.8 Volt
    Input Min Voltage2.7 Volt 2.7 Volt 2.7 Volt 1.04 Volt
    Input Max Voltage10 Volt 5.5 Volt 5.5 Volt 5.5 Volt
    Dropout Voltage0.45 Volt 0.42 Volt 0.42 Volt 0.240 Volt
    Adjustable OutputYes Yes Yes Yes
    Quiescent Current0.055 mA 2 mA 2 mA 10 mA
    PSRR55 dB 58 dB 58 dB
    Voltage Noise (rms)70 uV 100 uV 100 uV
    Ceramic Capacitors StableYes Yes Yes
    Feedback Tolerance2.5 % 3.5 % 3.5 %
    On/Off PinNo Yes No 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 Max9 Volt 5 Volt 5 Volt 1.8 Volt
    Feedback Voltage1.250 Volt 0.600 Volt 0.600 Volt 0.500 Volt
    AutomotiveYes
    PowerWiseYes Yes
    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP38690SD-ADJ/NOPB

    LP38690SD-ADJ

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide5000
    AVNET-EMWorldwide7000
    DIGI-KEYWorldwide1737
    FARNELLEurope and Asia870
    MOUSERWorldwide880
    NEWARKAmericas720
    RS COMPONENTSWorldwide875
    TAYLORAmericas5000
    TECHMOSAAsia Pacific1000
    		$0.55 each at 1K+ pcsreel
    of
    1000
    LP38690SDX-ADJ/NOPB

    LP38690SDX-ADJ

    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-ADJ.

    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-ADJ is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LP38690SD-ADJ/NOPB

    LP38690SD-ADJ
    		21.032
    21.102
    		LLP61
    1    		260
    260    		DetailN/AN/A
    		ZXYTT
    L112B
    LP38690SDX-ADJ/NOPB

    LP38690SDX-ADJ
    		21.032
    21.102
    		LLP61
    1    		260
    260    		DetailN/AN/A
    		ZXYTT
    L112B

    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-ADJ.

    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-ADJ is located at RoHS Status.

    CAD Symbols and Models
    N/A
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LP38690SD-ADJABCD15004268000639400011814314958
    LP38690SDX-ADJABCD15004268000639400011814314958

    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-ADJ.

    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-ADJ is located at RoHS Status.

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