National Semiconductor | High-performance Analog

 

 LM3404   
1.0A Constant Current Buck Regulator for High Power LED Drivers from the PowerWise® Family		 Click link to Download

Features

  • Integrated 1.0A MOSFET
  • VIN Range 6V to 42V (LM3404)
  • VIN Range 6V to 75V (LM3404HV)
  • 1.2A Output Current Over Temperature
  • Cycle-by-Cycle Current Limit
  • No Control Loop Compensation Required
  • Separate PWM Dimming and Low Power Shutdown
  • Supports all-ceramic output capacitors and capacitor-less outputs
  • Thermal shutdown protection
  • SO-8 Package, PSOP-8 Package

    • Description

    The LM3404/04HV are monolithic switching regulators designed to deliver constant currents to high power LEDs. Ideal for automotive, industrial, and general lighting applications, they contain a high-side N-channel MOSFET switch with a current limit of 1.5A (typical) for step-down (Buck) regulators. Hysteretic controlled on-time and an external resistor allow the converter output voltage to adjust as needed to deliver a constant current to series and series-parallel connected LED arrays of varying number and type. LED dimming via pulse width modulation (PWM), broken/open LED protection, low-power shutdown and thermal shutdown complete the feature set.


    Applications

  • LED Driver
  • Constant Current Source
  • Automotive Lighting
  • General Illumination
  • Industrial Lighting

    • WEBENCH Power Designer My Designs

    LM3404
     
    6.00 <=    		 V in Lower
     V    		  
    <=    		 V in Upper
     V    		  
    <= 42.00
    Ambient Temperature  °C <= 100
    Light Output (optional)  lumen


    What are WEBENCH® tools?

    Also Recommended
    LM3401▲Controller
    LM3402▲For 500mA Output Current
    LM3404HV▲For Vin Range 6V To 75V
    LM3405▲Fixed Frequency Buck



    Typical Application
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    		Block Diagram
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    Typical Performance
    click for larger image


    Parameters / ValuesLM3404 LM3401 LM3402 LM3404HV LM3405
    TopologyBuck Buck Hysteretic Controller Constant Current Buck Buck Buck
    Input Min Voltage6 Volt 4.5 Volt 6 Volt 6 Volt 3 Volt
    Input Max Voltage42 Volt 35 Volt 42 Volt 75 Volt 15 Volt
    Output RangeUndefined 200 mV to Vin Undefined 0.2V to 13.5V
    Output Current1000 mA Undefined mA 525 mA 1000 mA 1000 mA
    Efficiency (peak)96 % 92 % 96 % 96 % 92 %
    Output Min0.2 Volt 0.2 Volt 0.2 Volt 0.2 Volt 0.2 Volt
    Output Max40 Volt 40 Volt 73 Volt 13.5 Volt
    Special FeaturesCurrent Regulation Adjustable Hysteresis, 200 mV Reference Current Regulator
    Adjustable OutputYes Yes Yes Yes Yes
    Dimming MethodPWM PWM PWM PWM PWM
    Power Factor CorrectionNone None None None None
    On/Off PinYes Yes Yes Yes Yes
    PowerGood / Error FlagNo No No No No
    Output VoltageUndefined Volt Undefined Volt Undefined Volt Undefined Volt
    Output PowerUndefined Watt Undefined Watt Undefined Watt Undefined Watt
    Switching Frequency1000 kHz 1500 kHz 1000 kHz 1000 kHz Undefined kHz
    Adj Switch FrequencyYes No Yes Yes No
    Sync PinNo No No No No
    Step-DownYes Yes Yes Yes Yes
    Step-UpNo No No No
    InvertingNo No No No
    FlybackNo No No No
    RegTypeSwitching Regulator Switching Controller 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 125 deg C
    AutomotiveYes Yes Yes Yes
    PowerWiseYes Yes Yes Yes Yes
    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM3404MA/NOPB

    LM3404MA

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide2050
    AVNET-EMWorldwide339
    DIGI-KEYWorldwide1490
    FARNELLEurope and Asia63
    KEIKONGAsia Pacific54973
    MOUSERWorldwide524
    NEWARKAmericas42
    RS COMPONENTSWorldwide393
    TAYLORAmericas2550
    TECHMOSAAsia Pacific95
    		$1.30 each at 1K+ pcsrail
    of
    95
    LM3404MAX/NOPB

    LM3404MAX

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide2500
    AVNET-EMWorldwide2500
    DIGI-KEYWorldwide0
    RSL MICROAsia Pacific15000
    TAYLORAmericas2500
    		$1.30 each at 1K+ pcsreel
    of
    2500
    LM3404MR/NOPB

    LM3404MR

    RoHS Status

    PSOP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1020
    AVNET-EMWorldwide331
    DIGI-KEYWorldwide742
    FARNELLEurope and Asia752
    MOUSERWorldwide86
    NEWARKAmericas212
    TAYLORAmericas1020
    		$1.30 each at 1K+ pcsrail
    of
    95
    LM3404MRX/NOPB

    LM3404MRX

    RoHS Status

    PSOP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide5000
    CEACAsia Pacific7500
    DIGI-KEYWorldwide0
    MOUSERWorldwide745
    		$1.30 each at 1K+ pcsreel
    of
    2500

    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 LM3404.

    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 LM3404 is located at RoHS Status.

    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM3404EVAL
    		LM3404MA (SOIC) - 1A Constant Current Buck Regulator for HB LEDs (LM3404EVAL Board)Full production


     
    DistributorRegionQty
    ARROWWorldwide9
    DIGI-KEYWorldwide12
    FARNELLEurope and Asia7
    MOUSERWorldwide1
    NEWARKAmericas4
    TAYLORAmericas9
    		$37.50 each1

    Features:

    • Integrated 1.0A MOSFET
    • VIN Range 6V to 42V
    • 1.2A Output Current Over Temperature
    • Cycle-by-Cycle Current Limit
    • No Control Loop Compensation Required
    • Separate PWM Dimming and Low Power Shutdown
    • Supports All-Ceramic Output Capacitors and Capacitor-Less Outputs
    • Thermal Shutdown Protection
    • SO-8 Package

    Applications:

    • LED Backlight
    • Constant Current Source
    • Automotive Lighting
    • General Illumination
    • Industrial Lighting

    Contents:

    • A fully assembled LM3404MA based evaluation board
    • LM3404 datasheet
    • AN-1545 - LM3404/HV (SOIC Narrow package) evaluation board appnote

    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM3404FSTDIMEV/NOPB

    		LM3404FSTDIMEV - Fast Dimming and True Constant LED Current Evaluation BoardFull production
    Lead Free (RoHS)

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    FARNELLEurope and Asia1
    MOUSERWorldwide1
    TAYLORAmericas4
    		$40.00 each1

    Description:

    The LM3404/04HV are buck regulator derived controlled current sources designed to drive a series string of high power, high brightness LEDs (HBLEDs) at forward currents of up to 1.0A (LM3404/04HV). This evaluation board demonstrates the enhanced thermal performance, fast dimming and true constant LED current capabilities of the LM3402 and LM3404 devices.

    Contents:


    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM3404MREVAL
    		LM3402/LM3404 High Power PSOP-8 Evaluation boardFull production


     
    DistributorRegionQty
    DIGI-KEYWorldwide3
    FARNELLEurope and Asia5
    MOUSERWorldwide1
    NEWARKAmericas2
    		$37.50 each1

    Features:

    • Integrated 1.0A MOSFET
    • VIN Range 6V to 42V (LM3404)
    • VIN Range 6V to 75V (LM3404HV)
    • 1.2A Output Current Over Temperature
    • Cycle-by-Cycle Current Limit
    • No Control Loop Compensation Required
    • Separate PWM Dimming and Low Power Shutdown
    • Supports All-Ceramic Output Capacitors and Capacitor-Less Outputs
    • Thermal Shutdown Protection
    • SO-8 Package, PSOP-8 Package

    Applications:

    • LED Driver
    • Constant Current Source
    • Automotive Lighting
    • General Illumination
    • Industrial Lighting

    Contents:

    • A fully assembled LM3404HVMR PSOP based evaluation board
    • LM3404HV datasheet
    • AN-1585 - LM3404/HV (PSOP package) evaluation 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
    LM3404MA/NOPB

    LM3404MA
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    L3404
    MA
    LM3404MAX/NOPB

    LM3404MAX
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    L3404
    MA
    LM3404MR/NOPB

    LM3404MR
    		77.907
    78.13
    		PSOP83
    3    		260
    260    		DetailDownloadN/A
    		NSXYTT
    L3404
    MR
    LM3404MRX/NOPB

    LM3404MRX
    		77.907
    78.13
    		PSOP83
    3    		260
    260    		DetailDownloadN/A
    		NSXYTT
    L3404
    MR

    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 LM3404.

    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 LM3404 is located at RoHS Status.

    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM3404MAABCD150XV1038680025950002736338335
    LM3404MAXABCD150XV1038680025950002736338335
    LM3404MRABCD150XV1038680025950002736338335
    LM3404MRXABCD150XV1038680025950002736338335

    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 LM3404.

    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 LM3404 is located at RoHS Status.

    An Introduction to High Brightness LED Applications and Driving Techniques
    Click image to play video in new window


    WEBENCH® LED Architect Software Guided Tour
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    LED Driver Design for General Illumination
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    Automotive LED Lighting Challenges & Solutions
    Loading video...


    Driving High Power LEDs without Getting Burned - Part 1
    Loading video...


    Driving High Power LEDs without Getting Burned - Part 2
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    An Introduction to High Brightness LED Applications and Driving Techniques
    Date: 2007-11-17
    Length: 00:50:00
    WEBENCH® LED Architect Software Guided Tour
    Date: 2010-09-08
    Length: 0:05:36
    LED Driver Design for General Illumination
    Date: 2009-05-04
    Length: 0:36:55
    Automotive LED Lighting Challenges & Solutions
    Date: 2009-04-14
    Length: 0:35:00
    Driving High Power LEDs without Getting Burned - Part 1
    Date: 2007-10-30
    Length: 00:57:03
    Driving High Power LEDs without Getting Burned - Part 2
    Date: 2008-01-08
    Length: 00:43:29
    [Information as of 6-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation