National Semiconductor | High-performance Analog

 

 LM2575HV   
SIMPLE SWITCHER 1A Step-Down Voltage Regulator 		Click link to Download

Features

  • 3.3V, 5V, 12V, 15V, and adjustable output versions
  • Adjustable version output voltage range,
     1.23V to 37V (57V for HV version) ±4% max over
     line and load conditions
  • Guaranteed 1A output current
  • Wide input voltage range, 40V up to 60V for HV version
  • Requires only 4 external components
  • 52 kHz fixed frequency internal oscillator
  • TTL shutdown capability, low power standby mode
  • High efficiency
  • Uses readily available standard inductors
  • Thermal shutdown and current limit protection
  • P + Product Enhancement tested

    • Description

    The LM2575 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version.

    Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed-frequency oscillator.

    The LM2575 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat sink is required.

    A standard series of inductors optimized for use with the LM2575 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies.

    Other features include a guaranteed ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50 μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.


    Applications

  • Simple high-efficiency step-down (buck) regulator
  • Efficient pre-regulator for linear regulators
  • On-card switching regulators
  • Positive to negative converter (Buck-Boost)

    • Also Recommended
    LM5575▲75V Vin, 1.5A Iout, Selectable Switching Frequency, PowerWise



    Typical Application
    click for larger image


    		Connection Diagram
    click for larger image



    Typical Performance
    *click for larger image


    Parameters / ValuesLM2575HV LM5575
    Output Current1000 mA 1500 mA
    Input Min Voltage4 Volt 6 Volt
    Input Max Voltage60 Volt 75 Volt
    Output Min3.3, 1.23, 12, 15, 5 Volt 1.23 Volt
    Output Max3.3, 57, 12, 15, 5 Volt 70 Volt
    Frequency Min52 kHz 50 kHz
    Frequency Max52 kHz 500 kHz
    Efficiency (peak)88, 77, 75 % 87 %
    On/Off PinYes Yes
    PowerGood / Error FlagNo No
    SoftStartNo Yes
    Sync PinNo Yes
    InvertingYes Yes
    FlybackNo No
    RegTypeSwitching Regulator Switching Regulator
    Temperature Min-40 deg C -40 deg C
    Temperature Max125 deg C 125 deg C
    Adjustable OutputYes, No Yes
    Adj Switch FrequencyNo Yes
    PWM ModeVoltage Current
    TopologyBuck Buck
    Special FeaturesSIMPLE SWITCHER regulator 1.5% feedback voltage accuracy, emulated current mode
    Step-DownYes Yes
    Multiple Output CapabilityNo No
    Output PowerUndefined Watt Undefined Watt
    Output Voltage3.3, Undefined, 12, 15, 5 Volt Undefined Volt
    Output Range15V, 5V, 12V, 3.3V, 1.23V to 57V 1.23V to 70V
    Switching Frequency52 kHz 500 kHz
    Regulator FamilySIMPLE SWITCHER SIMPLE SWITCHER
    Synchronous RectificationNo No

    Datasheets
    TitleSizeDateOther
    Language
    LM2575HV SIMPLE SWITCHER 1A Step-Down Voltage Regulator856
    Kbytes    		26-Apr-07日本語  

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM2575HVMX-5.0/NOPB

    LM2575HVMX-5.0

    RoHS Status

    SOIC WIDE    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$2.10 each at 1K+ pcsreel
    of
    1000
    LM2575HVN-5.0/NOPB

    LM2575HVN-5.0

    RoHS Status

    MDIP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide1251
    MOUSERWorldwide160
    NEWARKAmericas55
    TAYLORAmericas26
    		$2.10 each at 1K+ pcsrail
    of
    20
    LM2575HVN-ADJ/NOPB

    LM2575HVN-ADJ

    RoHS Status

    MDIP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide10
    AVNET-EMWorldwide130
    DIGI-KEYWorldwide0
    TAYLORAmericas10
    		$2.10 each at 1K+ pcsrail
    of
    20
    LM2575HVS-12/NOPB

    LM2575HVS-12

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide55
    DIGI-KEYWorldwide435
    FARNELLEurope and Asia486
    MOUSERWorldwide20
    NEWARKAmericas176
    TAYLORAmericas55
    		$2.10 each at 1K+ pcsrail
    of
    45
    LM2575HVS-15/NOPB

    LM2575HVS-15

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide470
    DIGI-KEYWorldwide526
    MOUSERWorldwide106
    NEWARKAmericas7
    		$2.10 each at 1K+ pcsrail
    of
    45
    LM2575HVS-3.3/NOPB

    LM2575HVS-3.3

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1018
    DIGI-KEYWorldwide2855
    MOUSERWorldwide366
    TAYLORAmericas1018
    		$2.10 each at 1K+ pcsrail
    of
    45
    LM2575HVS-5.0/NOPB

    LM2575HVS-5.0

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide178
    AVNET-EMWorldwide916
    DIGI-KEYWorldwide883
    MOUSERWorldwide76
    NEWARKAmericas409
    RS COMPONENTSWorldwide21
    TAYLORAmericas1348
    		$2.10 each at 1K+ pcsrail
    of
    45
    LM2575HVS-ADJ/NOPB

    LM2575HVS-ADJ

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1090
    AVNET-EMWorldwide184
    DIGI-KEYWorldwide422
    FARNELLEurope and Asia486
    MOUSERWorldwide416
    NEWARKAmericas200
    RS COMPONENTSWorldwide3
    TAYLORAmericas1090
    		$2.10 each at 1K+ pcsrail
    of
    45
    LM2575HVSX-15/NOPB

    LM2575HVSX-15

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$2.10 each at 1K+ pcsreel
    of
    500
    LM2575HVSX-3.3/NOPB

    LM2575HVSX-3.3

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$2.10 each at 1K+ pcsreel
    of
    500
    LM2575HVSX-5.0/NOPB

    LM2575HVSX-5.0

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AECO TECHAsia Pacific1000
    ARROWWorldwide2500
    AVNET-EMWorldwide5500
    DIGI-KEYWorldwide0
    MOUSERWorldwide500
    RSL MICROAsia Pacific1500
    TAYLORAmericas2500
    		$2.10 each at 1K+ pcsreel
    of
    500
    LM2575HVSX-ADJ/NOPB

    LM2575HVSX-ADJ

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide500
    RSL MICROAsia Pacific5000
    		$2.10 each at 1K+ pcsreel
    of
    500
    LM2575HVT-12/NOPB

    LM2575HVT-12

    RoHS Status

    TO-220    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide270
    AVNET-EMWorldwide15
    DIGI-KEYWorldwide415
    FARNELLEurope and Asia527
    MOUSERWorldwide149
    NEWARKAmericas214
    RS COMPONENTSWorldwide9
    TAYLORAmericas1215
    		$2.45 each at 1K+ pcsrail
    of
    45
    LM2575HVT-15/NOPB

    LM2575HVT-15

    RoHS Status

    TO-220    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide119
    AVNET-EMWorldwide119
    DIGI-KEYWorldwide26
    FARNELLEurope and Asia137
    MOUSERWorldwide180
    NEWARKAmericas96
    TAYLORAmericas209
    		$2.45 each at 1K+ pcsrail
    of
    45
    LM2575HVT-3.3/NOPB

    LM2575HVT-3.3

    RoHS Status

    TO-220    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide178
    		$2.45 each at 1K+ pcsrail
    of
    45
    LM2575HVT-5.0/NOPB

    LM2575HVT-5.0

    RoHS Status

    TO-220    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide135
    AVNET-EMWorldwide572
    DIGI-KEYWorldwide1090
    MOUSERWorldwide214
    NEWARKAmericas47
    RS COMPONENTSWorldwide90
    TAYLORAmericas1350
    		$2.45 each at 1K+ pcsrail
    of
    45
    LM2575HVT-ADJ/NOPB

    LM2575HVT-ADJ

    RoHS Status

    TO-220    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide83
    AVNET-EMWorldwide791
    DIGI-KEYWorldwide630
    FARNELLEurope and Asia921
    MOUSERWorldwide156
    NEWARKAmericas294
    RS COMPONENTSWorldwide564
    TAYLORAmericas719
    		$2.45 each at 1K+ pcsrail
    of
    45

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LM2575HVM-12
    		LM22672MR-ADJ
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM2575HVM-15
    		LM22672MR-ADJ
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM2575HVM-5.0
    		LM2575HVMX-5.0
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM2575HVM-ADJ
    		LM22672MR-ADJ
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM2575HVMX-12
    		LM22672MRX-ADJ
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM2575HVMX-15
    		LM22672MRX-ADJ
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM2575HVMX-ADJ
    		LM5575MH
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM2575HVN-12
    		LM22672MR-ADJ
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM2575HVN-15
    		LM22672MR-ADJ
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM2575HVS-5.0EP
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM2575HVS-ADJEP
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM2575HVSX-12
    		LM2575HVS-12
    		NATIONAL SEMICONDUCTOR
    		01 Dec 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 LM2575HV.

    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 LM2575HV is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LM2575HVMX-5.0/NOPB

    LM2575HVMX-5.0
    		628.76
    630.001
    		SOIC WIDE243
    3    		260
    260    		DetailN/AN/A
    		NSUZXYTTE#
    LM2575HVM
    -5.0 P+
    LM2575HVN-5.0/NOPB

    LM2575HVN-5.0
    		1219.322
    1223.032
    		MDIP161
    1    		NA
    NA    		DetailN/AN/A
    		NSUZXYYTTE#
    LM2575HVN
    -5.0 P+
    LM2575HVN-ADJ/NOPB

    LM2575HVN-ADJ
    		1219.322
    1223.032
    		MDIP161
    1    		NA
    NA    		DetailN/AN/A
    		NSUZXYYTTE#
    LM2575HVN
    -ADJ P+
    LM2575HVS-12/NOPB

    LM2575HVS-12
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailN/AN/A
    		NSUZXYTTE#
    LM2575HVS
    -12 P+
    LM2575HVS-15/NOPB

    LM2575HVS-15
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailN/AN/A
    		NSUZXYTTE#
    LM2575HVS
    -15 P+
    LM2575HVS-3.3/NOPB

    LM2575HVS-3.3
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailN/AN/A
    		NSUZXYTTE#
    LM2575HVS
    -3.3 P+
    LM2575HVS-5.0/NOPB

    LM2575HVS-5.0
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailN/AN/A
    		NSUZXYTTE#
    LM2575HVS
    -5.0 P+
    LM2575HVS-ADJ/NOPB

    LM2575HVS-ADJ
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailN/AN/A
    		NSUZXYTTE#
    LM2575HVS
    -ADJ P+
    LM2575HVSX-15/NOPB

    LM2575HVSX-15
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailN/AN/A
    		NSUZXYTTE#
    LM2575HVS
    -15 P+
    LM2575HVSX-3.3/NOPB

    LM2575HVSX-3.3
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailN/AN/A
    		NSUZXYTTE#
    LM2575HVS
    -3.3 P+
    LM2575HVSX-5.0/NOPB

    LM2575HVSX-5.0
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailN/AN/A
    		NSUZXYTTE#
    LM2575HVS
    -5.0 P+
    LM2575HVSX-ADJ/NOPB

    LM2575HVSX-ADJ
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailN/AN/A
    		NSUZXYTTE#
    LM2575HVS
    -ADJ P+
    LM2575HVT-12/NOPB

    LM2575HVT-12
    		1905.986
    1908.876
    		TO-22051
    1    		NA
    NA    		DetailN/AN/A
    		NSUZXYTTE#
    LM2575HVT
    -12 P+
    LM2575HVT-15/NOPB

    LM2575HVT-15
    		1905.986
    1908.876
    		TO-22051
    1    		NA
    NA    		DetailN/AN/A
    		NSUZXYTTE#
    LM2575HVT
    -15 P+
    LM2575HVT-3.3/NOPB

    LM2575HVT-3.3
    		1905.986
    1908.876
    		TO-22051
    1    		NA
    NA    		DetailN/AN/A
    		NSUZXYTTE#
    LM2575HVT
    -3.3 P+
    LM2575HVT-5.0/NOPB

    LM2575HVT-5.0
    		1905.986
    1908.876
    		TO-22051
    1    		NA
    NA    		DetailN/AN/A
    		NSUZXYTTE#
    LM2575HVT
    -5.0 P+
    LM2575HVT-ADJ/NOPB

    LM2575HVT-ADJ
    		1905.986
    1908.876
    		TO-22051
    1    		NA
    NA    		DetailN/AN/A
    		NSUZXYTTE#
    LM2575HVT
    -ADJ P+

    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 LM2575HV.

    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 LM2575HV 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)
    LM2575HVMX-5.0SLM04404600353250011002356520
    LM2575HVN-5.0SLM04404600353250011002356520
    LM2575HVN-ADJSLM04404600353250011002356520
    LM2575HVS-12SLM04404600353250011002356520
    LM2575HVS-15SLM04404600353250011002356520
    LM2575HVS-3.3SLM04404600353250011002356520
    LM2575HVS-5.0SLM04404600353250011002356520
    LM2575HVS-ADJSLM04404600353250011002356520
    LM2575HVSX-15SLM04404600353250011002356520
    LM2575HVSX-3.3SLM04404600353250011002356520
    LM2575HVSX-5.0SLM04404600353250011002356520
    LM2575HVSX-ADJSLM04404600353250011002356520
    LM2575HVT-12SLM04404600353250011002356520
    LM2575HVT-15SLM04404600353250011002356520
    LM2575HVT-3.3SLM04404600353250011002356520
    LM2575HVT-5.0SLM04404600353250011002356520
    LM2575HVT-ADJSLM04404600353250011002356520

    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 LM2575HV.

    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 LM2575HV is located at RoHS Status.

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LM2575HVM-12
    		LM22672MR-ADJ
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM2575HVM-15
    		LM22672MR-ADJ
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM2575HVM-5.0
    		LM2575HVMX-5.0
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM2575HVM-ADJ
    		LM22672MR-ADJ
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM2575HVMX-12
    		LM22672MRX-ADJ
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM2575HVMX-15
    		LM22672MRX-ADJ
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM2575HVMX-ADJ
    		LM5575MH
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM2575HVN-12
    		LM22672MR-ADJ
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM2575HVN-15
    		LM22672MR-ADJ
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM2575HVS-5.0EP
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM2575HVS-ADJEP
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM2575HVSX-12
    		LM2575HVS-12
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009

    [Information as of 3-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation