National Semiconductor | High-performance Analog

 

 LM5575   

SIMPLE SWITCHER® 75V, 1.5A Step-Down Switching Regulator
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Features

  • LM5575Q is an Automotive Grade product that is AEC-Q100 grade 1 qualified (−40°C to + 125°C operating junction temperature)
  • Integrated 75V, 330mΩ N-channel MOSFET
  • Ultra-wide input voltage range from 6V to 75V
  • Adjustable output voltage as low as 1.225V
  • 1.5% feedback reference accuracy
  • Operating frequency adjustable between 50kHz and 500kHz with single resistor
  • Master or slave frequency synchronization
  • Adjustable soft-start
  • Emulated current mode control architecture
  • Wide bandwidth error amplifier
  • Built-in protection
  • Automotive Grade product datasheet that is AEC-Q100 grade 0 qualified is available upon request.

  • (−40°C to + 150°C operating junction temperature)
  • Description

    The LM5575 is an easy to use SIMPLE SWITCHER® buck regulator which allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6 - 75V, the LM5575 delivers 1.5A of continuous output current with an integrated 330mΩ N-Channel MOSFET. The regulator utilizes an Emulated Current Mode architecture which provides inherent line regulation, tight load transient response, and ease of loop compensation without the usual limitation of low-duty cycles associated with current mode regulators. The operating frequency is adjustable from 50kHz to 500kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple IC’s from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5575 guarantees robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a power enhanced TSSOP-16 package featuring an exposed die attach pad for thermal dissipation. The LM5575 is supported by the full suite of WEBENCH On-Line design tools.


    Applications

  • Automotive
  • Industrial
  • WEBENCH® LM5575
        Min   Max   Range  
      VIN V    6.00 – 75.00V  
      VOUT V    -65.00 – 75.00V  
      IOUT A    ≤ 1.50A  
      Ambient Temp °C    ≤ 100°C  
    Footprint BOM Cost Efficiency
    What are WEBENCH® tools?


    Also Recommended
    LM2557442V Input Voltage Max, 0.5A Output Current
    LM2557542V Input Voltage Max, 1.5A Output Current
    LM2557642V Input Voltage Max, 3A Output Current
    LM557475V Input Voltage Max, 0.5A Output Current
    LM557675V Input Voltage Max, 3A Output Current



    Parameters / ValuesLM5575 LM25574 LM25575 LM25576 LM5574 LM5576
    Output Current1500 mA 500 mA 1500 mA 3000 mA 500 mA 3000 mA
    Input Min Voltage6 Volt 6 Volt 6 Volt 6 Volt 6 Volt 6 Volt
    Input Max Voltage75 Volt 42 Volt 42 Volt 42 Volt 75 Volt 75 Volt
    Output Min1.23 Volt 1.23 Volt 1.23 Volt 1.23 Volt 1.23 Volt 1.23 Volt
    Output Max70 Volt 40 Volt 40 Volt 40 Volt 70 Volt 70 Volt
    Frequency Min50 kHz 50 kHz 50 kHz 50 kHz 50 kHz 50 kHz
    Frequency Max500 kHz 1000 kHz 1000 kHz 1000 kHz 500 kHz 500 kHz
    Efficiency (peak)87 % 91 % 91 % 91 % 85 % 88 %
    On/Off PinYes Yes Yes Yes Yes Yes
    PowerGood / Error FlagNo No No No No No
    SoftStartYes Yes Yes Yes Yes Yes
    Sync PinYes Yes Yes Yes Yes Yes
    InvertingYes Yes Yes Yes Yes Yes
    FlybackNo No No No No No
    RegTypeSwitching Regulator Switching 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 -40 deg C
    Temperature Max125 deg C 125 deg C 125 deg C 125 deg C 125 deg C 125 deg C
    Adjustable OutputYes Yes Yes Yes Yes Yes
    Adj Switch FrequencyYes Yes Yes Yes Yes Yes
    PWM ModeCurrent Current Current Current Current Current
    TopologyBuck Buck Buck Buck Buck Buck
    Special Features1.5% feedback voltage accuracy, emulated current mode 1.5% feedback voltage accuracy, emulated current mode 1.5% feedback voltage accuracy, emulated current mode 1.5% feedback voltage accuracy, emulated current mode 1.5% feedback voltage accuracy, emulated current mode 1.5% feedback voltage accuracy, emulated current mode
    Step-DownYes Yes Yes Yes Yes Yes
    Multiple Output CapabilityNo No No No No No
    Output PowerUndefined Watt Undefined Watt Undefined Watt Undefined Watt Undefined Watt Undefined Watt
    Output VoltageUndefined Volt Undefined Volt Undefined Volt Undefined Volt Undefined Volt Undefined Volt
    Output Range1.23V to 70V 1.23V to 37V 1.23V to 37V 1.23V to 37V 1.23V to 70V 1.23V to 70V
    Switching Frequency500 kHz 1000 kHz 1000 kHz 1000 kHz 500 kHz 500 kHz
    Regulator FamilySIMPLE SWITCHER SIMPLE SWITCHER SIMPLE SWITCHER SIMPLE SWITCHER SIMPLE SWITCHER SIMPLE SWITCHER
    AEC Q-100 Automotive Grade1 1 1 1 1 1
    AutomotiveYes Yes Yes Yes Yes Yes
    PowerWiseYes Yes Yes Yes Yes Yes
    Synchronous RectificationNo No No No No No

    Datasheets
    TitleSizeDateOther
    Language
    LM5575 SIMPLE SWITCHER® 75V, 1.5A Step-Down Switching Regulator442
    Kbytes
    23-Mar-09日本語
    中文


    Application Notes
    TitleSizeDateOther
    Language
    AN-1569: Application Note 1569 LM5575 Evaluation Board163
    Kbytes
    2-Apr-10日本語
    中文
    AN-1571: Application Note 1571 Quick Start Guide for a 1.5 Amp Buck Regulator Using the LM5575 and LM2557591
    Kbytes
    18-Mar-07日本語
    中文


    Other Technical Documents
    TitleTypeDate
    Supplying and Loading of Power Management Circuits Part 2External Article 2008-04-18

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM5575MH/NOPB

    LM5575MH

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide429
    AVNET-EMWorldwide9
    CEACAsia Pacific16284
    DIGI-KEYWorldwide2718
    FARNELLEurope and Asia2577
    MOUSERWorldwide426
    NEWARKAmericas1666
    RS COMPONENTSWorldwide103
    TAYLORAmericas429
    TECHMOSAAsia Pacific1012
    $2.20 each at 1K+ pcsrail
    of
    92
    LM5575MHX/NOPB

    LM5575MHX

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide2500
    DIGI-KEYWorldwide0
    MOUSERWorldwide2458
    TAYLORAmericas2500
    $2.20 each at 1K+ pcsreel
    of
    2500
    LM5575QMH/NOPB

    Auto Grade 1
    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide72
    DIGI-KEYWorldwide598
    MOUSERWorldwide79
    TAYLORAmericas72
    $2.49 each at 1K+ pcsrail
    of
    92
    LM5575QMHX/NOPB

    Auto Grade 1
    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $2.49 each at 1K+ pcsreel
    of
    2500
    LM5575 MDC

    RoHS Status
    Full production
    Lead Time: N/A

     

    Contact your distributor
    CALLtray
    of
    N/A
    LM5575 MWC

    RoHS Status
    Full production
    Lead Time: N/A

     

    Contact your distributor
    CALLwafer jar
    of
    N/A

    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 LM5575.

    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 LM5575 is located at RoHS Status.

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM5575EVAL
    75V, 1.5A Step-Down Switching RegulatorFull production


     
    DistributorRegionQty
    AVNET-EMWorldwide9
    DIGI-KEYWorldwide2
    FARNELLEurope and Asia3
    MOUSERWorldwide1
    NEWARKAmericas3
    RS COMPONENTSWorldwide2
    $37.50 each1

    Features:

    • Integrated 75V, 330Wm N-Channel MOSFET
    • Ultra-wide input voltage range from 6V to 75V
    • Adjustable output voltage as low as 1.225V
    • 1.5% feedback reference accuracy
    • Operating frequency adjustable between 50kHz and 500kHz with single resistor
    • Master or slave frequency synchronization
    • Adjustable soft-start
    • Emulated current mode control architecture
    • Wide bandwidth error amplifier
    • Built-in protection
    • TSSOP-16EP (Exponsed Pad) Package

    Contents:




    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
    LM5575MH/NOPB

    LM5575MH
    56.396
    56.606
    TSSOP EXP PAD161
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM5575
    MH
    LM5575MHX/NOPB

    LM5575MHX
    56.396
    56.606
    TSSOP EXP PAD161
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM5575
    MH
    LM5575QMH/NOPB

    56.396
    TSSOP EXP PAD161260DetailDownloadN/A
    NSUZXYTT
    LM5575
    QMH
    LM5575QMHX/NOPB

    56.396
    TSSOP EXP PAD161260DetailDownloadN/A
    NSUZXYTT
    LM5575
    QMH
    LM5575 MDC
    N/A
    Unpackaged DieN/A
    -
    LM5575 MWC
    32300
    WaferN/A
    -

    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 LM5575.

    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 LM5575 is located at RoHS Status.

    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM5575 MDCABCD150XV1038680025950002736338335
    LM5575 MWCABCD150XV1038680025950002736338335
    LM5575MHABCD150XV1038680025950002736338335
    LM5575MHXABCD150XV1038680025950002736338335
    LM5575QMHABCD150XV1038680025950002736338335
    LM5575QMHXABCD150XV1038680025950002736338335

    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 LM5575.

    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 LM5575 is located at RoHS Status.

    What's New in Power -- March 2009
    Loading video...


    Motor Control Sensing in Factory Automation
    Loading video...


    Introduction to Emulated Current Mode (ECM) Control and the new SIMPLE SWITCHER® Buck Regulators
    Click image to play video in new window


    What's New in Power -- March 2009
    Date: 2009-03-04
    Length: 0:04:07
    Motor Control Sensing in Factory Automation
    Date: 2009-08-04
    Length: 0:24:21
    Introduction to Emulated Current Mode (ECM) Control and the new SIMPLE SWITCHER® Buck Regulators
    Date: 2007-01-17
    Length: 00:33:00
    [Information as of 8-Feb-2012]