National Semiconductor | High-performance Analog

 

 LP8340   
Low Dropout, Low IQ, 1.0A CMOS Linear Regulator 		Click link to Download

Features

±1.5% Typical VOUT tolerance

  

420mV Typical Dropout @ 1.0A (VO = 5V)

  

Wide Operating Range

2.7V to 10V

Internal 1.0A PMOS Output Transistor

  

19µA Typical Quiescent Current

  

Thermal Overload Limiting

  

Foldback Current Limiting

  

Zener Trimmed Bandgap Reference

  

Space saving LLP package

  
  • Temperature Range

    LP8340C

    0°C to 125°C

    LP8340I

    -40°C to 125°C

Description

The LP8340 low-dropout CMOS linear regulator is available in 5V, 3.3V, 2.5V, 1.8V and adjustable output versions. Packaged in the 6ld LLP package and 3ld DPAK. The LP8340 can deliver up to 1.0A output current.

Typical dropout voltage is 420mV at 1.0A for the 5.0V version, 540mV at 1.0A for the 3.3V version, 670mV at 1.0A for the 2.5V version and 680mV at 800mA for the 1.8V version.

The LP8340 includes a zener trimmed bandgap voltage reference, foldback current limiting and thermal overload limiting.

The LP8340 features a PMOS output transistor which unlike PNP type low dropout regulators requires no base drive current. This allows the device ground current to remain less than 50µA over operating temperature, supply voltage and irrespective of the load current.


Applications

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

    • Also Recommended
    LP38690▲Stable With Ceramic Output Capacitors
    LP38692▲With Enable Pin, <1uA Shutdown-state Current



    Typical Application
    click for larger image


    		Block Diagram
    *click for larger image



    Typical Performance
    *click for larger image


    Parameters / ValuesLP8340 LP38690 LP38692
    Output Current1000 mA 1000 mA 1000 mA
    Output Min1.25 Volt 1.8, 5.0, 2.5, 3.3 Volt 1.8, 2.5, 3.3, 5 Volt
    Input Min Voltage2.7 Volt 2.75, 3.95, 3.3, 5.45 Volt 2.95, 2.7, 5.45, 3.75 Volt
    Input Max Voltage10 Volt 10 Volt 10 Volt
    Dropout Voltage0.54 Volt 0.45, 0.95, 0.8, 0.65 Volt 0.45, 0.95, 0.8, 0.65 Volt
    Adjustable OutputYes No No
    Quiescent Current0.019 mA 0.055 mA 0.055 mA
    On/Off PinNo No Yes
    PowerGood / Error FlagNo No No
    RegTypeLDO LDO LDO
    Temperature Min0 deg C -40 deg C -40 deg C
    Temperature Max125 deg C 125 deg C 125 deg C
    Output VoltageUndefined Volt 1.8, 5.0, 2.5, 3.3 Volt 1.8, 2.5, 3.3, 5 Volt
    Output Max9.3 Volt 1.8, 5.0, 2.5, 3.3 Volt 1.8, 2.5, 3.3, 5 Volt

    Datasheets
    TitleSizeDateOther
    Language
    LP8340 Low Dropout, Low IQ, 1.0A CMOS Linear Regulator685
    Kbytes    		3-May-05   

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP8340ILDX-ADJ/NOPB

    LP8340ILDX-ADJ

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

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

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LP8340CDT-1.8
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340CDT-2.5
    		LP38690DT-2.5
    		National Semiconductor
    		30 Nov 2009
    LP8340CDT-3.3
    		LP38690DT-3.3
    		National Semiconductor
    		30 Nov 2009
    LP8340CDT-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340CDTX-1.8
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340CDTX-2.5
    		LP38690DTX-2.5
    		National Semiconductor
    		30 Nov 2009
    LP8340CDTX-3.3
    		LP38690DTX-3.3
    		National Semiconductor
    		30 Nov 2009
    LP8340CDTX-5.0
    		LP38690DTX-5.0
    		National Semiconductor
    		30 Nov 2009
    LP8340CLD-1.8
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340CLD-2.5
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340CLD-3.3
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340CLD-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340CLD-ADJ
    		LP38690SD-ADJ
    		National Semiconductor
    		30 Nov 2009
    LP8340CLDX-2.5
    		LP38690SDX-2.5
    		National Semiconductor
    		30 Nov 2009
    LP8340CLDX-3.3
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340CLDX-ADJ
    		LP38690SDX-ADJ
    		National Semiconductor
    		30 Nov 2009
    LP8340IDT-1.8
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340IDT-2.5
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340IDT-3.3
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340IDT-5.0
    		LP38690DT-5.0
    		National Semiconductor
    		30 Nov 2009
    LP8340IDTX-2.5
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340IDTX-3.3
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340ILD-1.8
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340ILD-3.3
    		LP38690SD-3.3
    		National Semiconductor
    		30 Nov 2009
    LP8340ILD-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340ILD-ADJ
    		LP38690SD-ADJ
    		National Semiconductor
    		30 Nov 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 LP8340.

    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 LP8340 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LP8340ILDX-ADJ/NOPB

    LP8340ILDX-ADJ
    		21.851
    21.906
    		LLP63
    1    		260
    235    		DetailDownloadN/A
    		ZXYTT
    L078B

    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 LP8340.

    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 LP8340 is located at RoHS Status.

    CAD Symbols and Models
    Download LP8340 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LP8340ILDX-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 LP8340.

    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 LP8340 is located at RoHS Status.

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LP8340CDT-1.8
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340CDT-2.5
    		LP38690DT-2.5
    		National Semiconductor
    		30 Nov 2009
    LP8340CDT-3.3
    		LP38690DT-3.3
    		National Semiconductor
    		30 Nov 2009
    LP8340CDT-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340CDTX-1.8
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340CDTX-2.5
    		LP38690DTX-2.5
    		National Semiconductor
    		30 Nov 2009
    LP8340CDTX-3.3
    		LP38690DTX-3.3
    		National Semiconductor
    		30 Nov 2009
    LP8340CDTX-5.0
    		LP38690DTX-5.0
    		National Semiconductor
    		30 Nov 2009
    LP8340CLD-1.8
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340CLD-2.5
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340CLD-3.3
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340CLD-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340CLD-ADJ
    		LP38690SD-ADJ
    		National Semiconductor
    		30 Nov 2009
    LP8340CLDX-2.5
    		LP38690SDX-2.5
    		National Semiconductor
    		30 Nov 2009
    LP8340CLDX-3.3
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340CLDX-ADJ
    		LP38690SDX-ADJ
    		National Semiconductor
    		30 Nov 2009
    LP8340IDT-1.8
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340IDT-2.5
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340IDT-3.3
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340IDT-5.0
    		LP38690DT-5.0
    		National Semiconductor
    		30 Nov 2009
    LP8340IDTX-2.5
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340IDTX-3.3
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340ILD-1.8
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340ILD-3.3
    		LP38690SD-3.3
    		National Semiconductor
    		30 Nov 2009
    LP8340ILD-5.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LP8340ILD-ADJ
    		LP38690SD-ADJ
    		National Semiconductor
    		30 Nov 2009

    [Information as of 9-Feb-2012]
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