National Semiconductor | High-performance Analog

 

 LM5010   
High Voltage 1A Step Down Switching Regulator 		Click link to Download

Features
  • Input Voltage Range: 8V to 75V
  • Valley Current Limit At 1.25A
  • Switching Frequency Can Exceed 1 MHz
  • Integrated N-Channel Buck Switch
  • Integrated Startup Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Operating Frequency Remains Constant With Load and Line Variations
  • Maximum Duty Cycle Limited During Startup
  • Adjustable Output Voltage
  • Precision 2.5V Feedback Reference
  • Thermal shutdown

    • Description

    The LM5010 Step Down Switching Regulator features all the functions needed to implement a low cost, efficient, buck bias regulator capable of supplying in excess of 1A load current. This high voltage regulator contains an N-Channel Buck Switch, and is available in thermally enhanced LLP-10 and TSSOP-14EP packages. The hysteretic regulation scheme requires no loop compensation, results in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The valley current limit detection is set at 1.25A. Additional features include: VCC under-voltage lockout, thermal shutdown, gate drive under-voltage lockout, and maximum duty cycle limiter.


    Applications

  • High Efficiency Point-Of-Load (POL) Regulator
  • Non-Isolated Telecommunications Buck Regulator
  • Secondary High Voltage Post Regulator
  • Automotive Systems

    • WEBENCH® LM5010
        Min   Max   Range  
      VIN – V    8.00 – 75.00V  
      VOUT V    2.50 – 75.00V  
      IOUT A    ≤ 1.00A  
      Ambient Temp °C    ≤ 100°C  
    Footprint BOM Cost Efficiency
    What are WEBENCH® tools?


    Also Recommended
    LM5005▲Higher Current (2.5A) High Voltage (80V) Switching Reg With Softstart
    LM5007▲80V 0.5A Step Down Switching Regulator
    LM5008▲100V 0.35A Step Down Switching Regulator
    LM5010A▲Higher Max Temperature 150 Deg C And Lower Input Voltage 6V
    LM511580V Sync Buck Controller (Iout 2A Up To 20A)



    Typical Application
    click for larger image


    		Block Diagram
    *click for larger image



    Typical Performance
    *click for larger image


    Parameters / ValuesLM5010 LM5005 LM5007 LM5008 LM5010A
    Output Current1000 mA 2500 mA 500 mA 350 mA 1000 mA
    Input Min Voltage8 Volt 7 Volt 9 Volt 9.5 Volt 6 Volt
    Input Max Voltage75 Volt 75 Volt 75 Volt 95 Volt 75 Volt
    Output Min2.5 Volt 1.23 Volt 2.5 Volt 2.5 Volt 2.5 Volt
    Output Max70 Volt 70 Volt 73 Volt 75 Volt 70 Volt
    Frequency Min50 kHz 50 kHz 50 kHz 50 kHz 50 kHz
    Frequency Max1000 kHz 500 kHz 800 kHz 600 kHz 1000 kHz
    Efficiency (peak)91 % 94 % 93 % 92 % 95 %
    On/Off PinYes Yes Yes Yes Yes
    PowerGood / Error FlagNo No No No No
    SoftStartYes Yes No No Yes
    Sync PinNo Yes No No No
    InvertingYes Yes Yes Yes Yes
    FlybackNo No No No No
    RegTypeSwitching Regulator Switching Regulator Switching Regulator Switching Regulator Switching Regulator
    Temperature Min-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 150 deg C
    Adjustable OutputYes Yes Yes Yes Yes
    Adj Switch FrequencyYes Yes Yes Yes Yes
    PWM ModeConstant on-time Current Constant on-time Constant on-time Constant on-time
    TopologyBuck Buck Buck Buck Buck
    Special FeaturesNo compensation required, ultra-fast transient response 1.5% feedback voltage accuracy, emulated current mode Internal startup regulator for Vin>9V, internal 80V/0.7A N-FET, Pull Ron pin to ground for shutdown Internal startup regulator for Vin>9V, internal 100V/0.5A N-FET, Pull Ron pin to ground for shutdown No compensation required, ultra-fast transient response
    Step-DownYes Yes Yes Yes Yes
    Multiple Output CapabilityNo No No No No
    Output PowerUndefined Watt Undefined Watt Undefined Watt Undefined Watt
    Output VoltageUndefined Volt Undefined Volt Undefined Volt Undefined Volt
    Output Range2.5V to 70V 1.23V to 70V 2.5V to 73V 2.5V to 75V 2.5V to 70V
    Switching Frequency1000 kHz 500 kHz 800 kHz 600 kHz 1000 kHz
    Feedback Voltage2.5 Volt Undefined Volt 2.5 Volt 2.5 Volt 2.5 Volt
    Regulator FamilyUndefined Undefined Undefined SIMPLE SWITCHER, Undefined
    AutomotiveUndefined Yes Yes Yes
    Synchronous RectificationNo No No No No

    Datasheets
    TitleSizeDateOther
    Language
    LM5010 High Voltage 1A Step Down Switching Regulator833
    Kbytes    		11-Feb-05   


    Application Notes
    TitleSizeDateOther
    Language
    AN-1352: Application Note 1352 LM5010 Evaluation Board591
    Kbytes    		2-Dec-04 
    AN-1423: Application Note 1423 LM5010A Evaluation Board643
    Kbytes    		4-Dec-05 
    AN-1481: Application Note 1481 Controlling Output Ripple and Achieving ESR Independence in Constant On-Time (COT) Regulator Designs574
    Kbytes    		27-Sep-06日本語
    中文


    Other Technical Documents
    TitleTypeDate
    Emulated Ripple Technique Advances Hysteretic Switchmode SuppliesExternal Article 2008-02-25

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM5010MH/NOPB

    LM5010MH

    RoHS Status

    TSSOP EXP PAD    		Full production
    Lead Time: 8 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide464
    AVNET-EMWorldwide282
    DIGI-KEYWorldwide0
    FARNELLEurope and Asia47
    MOUSERWorldwide200
    NEWARKAmericas164
    TAYLORAmericas464
    		$1.60 each at 1K+ pcsrail
    of
    94
    LM5010MHX/NOPB


    RoHS Status

    TSSOP EXP PAD    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide2353
    		$1.60 each at 1K+ pcsreel
    of
    2500
    LM5010SD/NOPB

    LM5010SD

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide585
    DIGI-KEYWorldwide3905
    FARNELLEurope and Asia1256
    MOUSERWorldwide1690
    NEWARKAmericas646
    TAYLORAmericas585
    		$1.60 each at 1K+ pcsreel
    of
    1000
    LM5010SDX/NOPB

    LM5010SDX

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.60 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 LM5010.

    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 LM5010 is located at RoHS Status.

    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM5010 EVAL
    		High Voltage 1A Step Down Switching RegulatorFull production


     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide1
    		$40.60 each1

    LM5010 High Voltage 1A Step Down Switching Regulator

    Features:

    • Input Voltage Range: 8 V to 75 V
    • Valley Current Limit at 1.25 A
    • Switching Frequency Can Exceed 1 MHz
    • Integrated N-Channel Buck Switch
    • Integrated Startup Regulator
    • No Loop Compesation Required
    • Ultra-Fast Transient Response
    • Operating Frequency Remains Constant With Load and Line Variations
    • Maximum Duty Cycle Limited During Startup
    • Adjustable Output Voltage
    • Precision 2.5 V Feedback Reference
    • Thermal Shutdown

    Applications:

    • High Efficiency Point-Of-Load (POL) Regulator
    • Non-Isolated Telecommunications Buck Regulator
    • Secondary High Voltage Post Regulator
    • Automotive Systems

    Contents:

    • A fully assembled LM5010MH evaluation board
    • LM5010 datasheet
    • LM5010 eval board appnote



    National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

    Lead Free product status is available through the search tool located here

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LM5010MH/NOPB

    LM5010MH
    		53.783
    54.004
    		TSSOP EXP PAD141
    1    		260
    260    		DetailDownloadN/A
    		NSUZXYTT
    L5010
    MH
    LM5010MHX/NOPB

    		53.783
    		TSSOP EXP PAD141260DetailDownloadN/A
    		NSUZXYTT
    L5010
    MH
    LM5010SD/NOPB

    LM5010SD
    		39.757
    39.906
    		LLP101
    1    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTT
    L00057B
    LM5010SDX/NOPB

    LM5010SDX
    		39.757
    39.906
    		LLP101
    1    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTT
    L00057B

    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 LM5010.

    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 LM5010 is located at RoHS Status.

    Design Tools
    TitleSizeDate
    LM5010 Quick Start Calculator  

    CAD Symbols and Models
    Download LM5010 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM5010MHABCD150XV1038680025950002736338335
    LM5010MHXABCD150XV1038680025950002736338335
    LM5010SDABCD150XV1038680025950002736338335
    LM5010SDXABCD150XV1038680025950002736338335

    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 LM5010.

    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 LM5010 is located at RoHS Status.

    Requirements and Solutions for Automotive Power Management Applications
    Click image to play video in new window


    Requirements and Solutions for Automotive Power Management Applications
    Date: 2008-02-17
    Length: 00:40:00
    [Information as of 8-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation