National Semiconductor | High-performance Analog

 

 LM2591HV   
SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator 		Click link to Download

Features
  • 3.3V, 5V, and adjustable output versions
  • Adjustable version output voltage range, 1.2V to 57V ±4% max over line and load conditions
  • Guaranteed 1A output load current
  • Available in 5-pin TO-220 and TO-263 (surface mount) Package
  • Input voltage range up to 60V
  • 150 kHz fixed frequency internal oscillator
  • On/Off control
  • Low power standby mode, IQ typically 90 µA
  • High Efficiency
  • Thermal shutdown and current limit protection

    • Description

    The LM2591HV 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, and an adjustable output version.

    This series of switching regulators is similar to the LM2590HV, but without some of the supervisory and performance features of the latter.

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

    The LM2591HV operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 5-lead TO-220 package with several different lead bend options, and a 5-lead TO-263 Surface mount package.

    Other features include a guaranteed ±4% tolerance on output voltage under all conditions of input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 90 µA standby current. Self protection features include a two stage current limit for the output switch and an over temperature shutdown for complete 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

    • WEBENCH® LM2591HV
        Min   Max   Range  
      VIN – V    4.50 – 60.00V  
      VOUT V    1.23 – 57.00V  
      IOUT A    ≤ 1.00A  
      Ambient Temp °C    ≤ 100°C  
    Footprint BOM Cost Efficiency
    What are WEBENCH® tools?





    Typical Application
    click for larger image


    		Block Diagram
    click for larger image



    Typical Performance
    *click for larger image


     

    ParametersValues
    Output Current 1000 mA
    Input Min Voltage 4.5 Volt
    Input Max Voltage 60 Volt
    Output Min 3.3, 1.23, 5 Volt
    Output Max 57, 3.3, 5 Volt
    Frequency Min 150 kHz
    Frequency Max 150 kHz
    Efficiency (peak) 77, 76, 82 %
    On/Off Pin Yes
    PowerGood / Error Flag No
    SoftStart No
    Sync Pin No
    Inverting No
    Flyback No
    RegType Switching Regulator
    Temperature Min -40 deg C
    Temperature Max 125 deg C
    Adjustable Output Yes, No
    Adj Switch Frequency No
    PWM Mode Voltage
    Topology Buck
    Special Features SIMPLE SWITCHER regulator
    Step-Down Yes
    Multiple Output Capability No
    Output Power Undefined Watt
    Output Voltage 3.3, Undefined, 5 Volt
    Output Range 5V, 3.3V, 1.23V to 57V
    Switching Frequency 150 kHz
    Regulator Family SIMPLE SWITCHER
    Synchronous Rectification No

    Datasheets
    TitleSizeDateOther
    Language
    LM2591HV SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator730
    Kbytes    		8-Aug-03日本語  

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM2591HVS-3.3/NOPB

    LM2591HVS-3.3

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1170
    AVNET-EMWorldwide120
    DIGI-KEYWorldwide105
    MOUSERWorldwide180
    RS COMPONENTSWorldwide29
    TAYLORAmericas1170
    		$2.15 each at 1K+ pcsrail
    of
    45
    LM2591HVS-5.0/NOPB

    LM2591HVS-5.0

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide125
    AVNET-EMWorldwide133
    DIGI-KEYWorldwide814
    MOUSERWorldwide155
    NEWARKAmericas444
    RS COMPONENTSWorldwide65
    TAYLORAmericas2001
    		$2.15 each at 1K+ pcsrail
    of
    45
    LM2591HVS-ADJ/NOPB

    LM2591HVS-ADJ

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide95
    AVNET-EMWorldwide140
    DIGI-KEYWorldwide964
    FARNELLEurope and Asia216
    MOUSERWorldwide427
    NEWARKAmericas985
    RS COMPONENTSWorldwide32
    TAYLORAmericas1265
    		$2.15 each at 1K+ pcsrail
    of
    45
    LM2591HVSX-3.3/NOPB

    LM2591HVSX-3.3

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide500
    		$2.15 each at 1K+ pcsreel
    of
    500
    LM2591HVSX-5.0/NOPB

    LM2591HVSX-5.0

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide1500
    AVNET-EMWorldwide500
    DIGI-KEYWorldwide0
    MOUSERWorldwide500
    TAYLORAmericas1500
    TECHMOSAAsia Pacific7500
    		$2.15 each at 1K+ pcsreel
    of
    500
    LM2591HVSX-ADJ/NOPB

    LM2591HVSX-ADJ

    RoHS Status

    TO-263    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide6500
    AVNET-EMWorldwide5500
    DIGI-KEYWorldwide0
    MOUSERWorldwide500
    TAYLORAmericas6500
    		$2.15 each at 1K+ pcsreel
    of
    500
    LM2591HVT-3.3/NOPB

    LM2591HVT-3.3

    RoHS Status

    TO-220    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide1310
    MOUSERWorldwide175
    		$2.15 each at 1K+ pcsrail
    of
    45
    LM2591HVT-5.0/NOPB

    LM2591HVT-5.0

    RoHS Status

    TO-220    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide855
    DIGI-KEYWorldwide565
    MOUSERWorldwide158
    TAYLORAmericas855
    		$2.15 each at 1K+ pcsrail
    of
    45
    LM2591HVT-ADJ/NOPB

    LM2591HVT-ADJ

    RoHS Status

    TO-220    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide95
    AVNET-EMWorldwide180
    DIGI-KEYWorldwide333
    FARNELLEurope and Asia368
    MOUSERWorldwide140
    NEWARKAmericas45
    RS COMPONENTSWorldwide67
    TAYLORAmericas95
    		$2.15 each at 1K+ pcsrail
    of
    45

    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 LM2591HV.

    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 LM2591HV is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LM2591HVS-3.3/NOPB

    LM2591HVS-3.3
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LM2591HVS
    -3.3 P+
    LM2591HVS-5.0/NOPB

    LM2591HVS-5.0
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LM2591HVS
    -5.0 P+
    LM2591HVS-ADJ/NOPB

    LM2591HVS-ADJ
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LM2591HVS
    -ADJ P+
    LM2591HVSX-3.3/NOPB

    LM2591HVSX-3.3
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LM2591HVS
    -3.3 P+
    LM2591HVSX-5.0/NOPB

    LM2591HVSX-5.0
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LM2591HVS
    -5.0 P+
    LM2591HVSX-ADJ/NOPB

    LM2591HVSX-ADJ
    		1448.647
    1449.868
    		TO-26353
    3    		245
    235    		DetailDownloadN/A
    		NSUZXYTTE#
    LM2591HVS
    -ADJ P+
    LM2591HVT-3.3/NOPB

    LM2591HVT-3.3
    		1905.986
    1908.876
    		TO-22051
    1    		NA
    NA    		DetailDownloadN/A
    		NSUZXYTTE#
    LM2591HVT
    -3.3 P+
    LM2591HVT-5.0/NOPB

    LM2591HVT-5.0
    		1957.896
    1908.876
    		TO-22051
    1    		NA
    NA    		DetailDownloadN/A
    		NSUZXYTTE#
    LM2591HVT
    -5.0 P+
    LM2591HVT-ADJ/NOPB

    LM2591HVT-ADJ
    		1957.896
    1908.876
    		TO-22051
    1    		NA
    NA    		DetailDownloadN/A
    		NSUZXYTTE#
    LM2591HVT
    -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 LM2591HV.

    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 LM2591HV is located at RoHS Status.

    Design Tools
    TitleSizeDate
    SimpleSwitcher® DC-DC Converters Design Software  

    CAD Symbols and Models
    Download LM2591HV CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM2591HVS-3.3LB30003437100416450011181688246
    LM2591HVS-5.0LB30003437100416450011181688246
    LM2591HVS-ADJLB30003437100416450011181688246
    LM2591HVSX-3.3LB30003437100416450011181688246
    LM2591HVSX-5.0LB30003437100416450011181688246
    LM2591HVSX-ADJLB30003437100416450011181688246
    LM2591HVT-3.3LB30003437100416450011181688246
    LM2591HVT-5.0LB30003437100416450011181688246
    LM2591HVT-ADJLB30003437100416450011181688246

    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 LM2591HV.

    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 LM2591HV is located at RoHS Status.

    [Information as of 9-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation