National Semiconductor | High-performance Analog

 

 LMZ14202   

2A SIMPLE SWITCHER® Power Module with 42V Maximum Input Voltage
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Features

Electrical Specifications

  • 12W maximum total output power
  • Up to 2A output current
  • Input voltage range 6V to 42V
  • Output voltage range 0.8V to 6V
  • Efficiency up to 90%
  • Key Features

  • Integrated shielded inductor
  • Simple PCB layout
  • Flexible startup sequencing using external soft-start and precision enable
  • Protection against inrush currents and faults such as input UVLO and output short circuit
  • – 40°C to 125°C junction temperature range
  • Single exposed pad and standard pinout for easy mounting and manufacturing
  • Fast transient response for powering FPGAs and ASICs
  • Low output voltage ripple
  • Pin-to-pin compatible family:

  • LMZ14203/2/1 (42V max 3A, 2A, 1A)

  • LMZ12003/2/1 (20V max 3A, 2A, 1A)
  • Fully enabled for Webench® Power Designer
  • Performance Benefits

  • Operates at high ambient temperature with no thermal derating
  • High efficiency reduces system heat generation
  • Low radiated emissions (EMI) complies with EN55022 class B standard
  • Low external component count
  • Description

    The LMZ14202 SIMPLE SWITCHER® power module is an easy-to-use step-down DC-DC solution capable of driving up to 2A load with exceptional power conversion efficiency, line and load regulation, and output accuracy. The LMZ14202 is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.

    The LMZ14202 can accept an input voltage rail between 6V and 42V and deliver an adjustable and highly accurate output voltage as low as 0.8V. The LMZ14202 only requires three external resistors and four external capacitors to complete the power solution. The LMZ14202 is a reliable and robust design with the following protection features: thermal shutdown, input under-voltage lockout, output over-voltage protection, short-circuit protection, output current limit, and allows startup into a pre-biased output. A single resistor adjusts the switching frequency up to 1 MHz.


    Applications

  • Point of load conversions from 12V and 24V input rail
  • Time critical projects
  • Space constrained / high thermal requirement applications
  • Negative output voltage applications (See AN-2027)
  • WEBENCH® LMZ14202
        Min   Max   Range  
      VIN V    6.00 – 42.00V  
      VOUT V    0.80 – 6.00V  
      IOUT A    ≤ 2.00A  
      Ambient Temp °C    ≤ 100°C  
    Footprint BOM Cost Efficiency
    What are WEBENCH® tools?


    Also Recommended
    LMZ105045.5V Input Voltage Max, 4A
    LMZ1200120V Input Voltage Max, 1A, Pin-to-Pin Compatible
    LMZ1200220V Input Voltage Max, 2A, Pin-to-Pin Compatible
    LMZ1200320V Input Voltage Max, 3A, Pin-to-Pin Compatible
    LMZ142011A Version, Pin-to-Pin Compatible
    LMZ142033A Version, Pin-to-Pin Compatible

    Parameters / ValuesLMZ14202 LMZ10504 LMZ12001 LMZ12002 LMZ12003 LMZ14201 LMZ14203
    Output Current2000 mA 4000 mA 1000 mA 2000 mA 3000 mA 1000 mA 3000 mA
    Input Min Voltage6 Volt 2.95 Volt 4.5 Volt 4.5 Volt 4.5 Volt 6 Volt 6 Volt
    Input Max Voltage42 Volt 5.5 Volt 20 Volt 20 Volt 20 Volt 42 Volt 42 Volt
    Output Min0.8 Volt 0.8 Volt 0.8 Volt 0.8 Volt 0.8 Volt 0.8 Volt 0.8 Volt
    Output Max6 Volt 5 Volt 6 Volt 6 Volt 6 Volt 6 Volt 6 Volt
    Frequency Max1000 kHz Undefined kHz 1000 kHz 1000 kHz 1000 kHz 1000 kHz 900 kHz
    Efficiency (peak)94 % 96 % 94 % 94 % 94 % 94 % 94 %
    Integrated InductorYes Yes Yes Yes Yes Yes Yes
    PowerGood / Error FlagNo No No No No No No
    SoftStartYes Yes Yes Yes Yes Yes Yes
    Sync PinNo No No No No No No
    InvertingNo No No No No No No
    FlybackNo No No No No No No
    RegTypePower Module Power Module Power Module Power Module Power Module Power Module Power Module
    Temperature Min-40 deg C -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 125 deg C
    Adjustable OutputYes Yes Yes Yes Yes Yes Yes
    Adj Switch FrequencyYes No Yes Yes Yes Yes Yes
    PWM ModeConstant On-time Voltage Mode Control Constant On-time Constant On-time Constant On-time Constant On-time Constant On-time
    TopologyBuck Buck Buck Buck Buck Buck Buck
    Special FeaturesLow EMI Low EMI Low EMI Low EMI Low EMI Low EMI Low EMI
    Step-DownYes Yes Yes Yes Yes Yes Yes
    Multiple Output CapabilityNo No No No No No No
    Output Power12 Watt 20 Watt 6 Watt 12 Watt 18 Watt 6 Watt 18 Watt
    Output Range0.8V to 6.0V 0.8V to 5.0V 0.8V to 6.0V 0.8V to 6.0V 0.8V to 6.0V 0.8V to 6.0V 0.8V to 6.0V
    Feedback Voltage0.8 Volt 0.8 Volt 0.8 Volt 0.8 Volt 0.8 Volt 0.8 Volt 0.8 Volt
    On/Off PinYes Yes Yes Yes Yes Yes Yes
    Regulator FamilySIMPLE SWITCHER SIMPLE SWITCHER SIMPLE SWITCHER SIMPLE SWITCHER SIMPLE SWITCHER SIMPLE SWITCHER SIMPLE SWITCHER
    AutomotiveNo No No No No No No
    PowerWiseYes Yes Yes Yes Yes Yes Yes
    Synchronous RectificationYes Yes Yes Yes Yes Yes Yes
    Quiescent Current1 mA 1.7 mA 1 mA 1 mA 1 mA 1 mA 1 mA
    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LMZ14202TZ-ADJ/NOPB


    RoHS Status


    TO-PMOD
    Full production
    Lead Time: 8 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide171
    DIGI-KEYWorldwide487
    MOUSERWorldwide340
    $7.13 each at 1K+ pcsreel
    of
    250
    LMZ14202TZE-ADJ/NOPB


    RoHS Status


    TO-PMOD
    Full production
    Lead Time: 10 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide50
    DIGI-KEYWorldwide0
    FARNELLEurope and Asia10
    KEIKONGAsia Pacific90
    MOUSERWorldwide118
    NEWARKAmericas10
    $7.13 each at 1K+ pcsrail
    of
    45
    LMZ14202TZX-ADJ/NOPB


    RoHS Status


    TO-PMOD
    Full production
    Lead Time: 10 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide500
    $7.13 each at 1K+ pcsreel
    of
    500

    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 LMZ14202.

    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 LMZ14202 is located at RoHS Status.

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LMZ14202EVAL/NOPB

    Simple Switcher ® Power Module 42Vin, 2A Eval BoardFull production
    Lead Free (RoHS)

     
    DistributorRegionQty
    AVNET-EMWorldwide2
    DIGI-KEYWorldwide0
    MOUSERWorldwide1
    $24.00 each1

    The SIMPLE SWITCHER power module evaluation board is optimized for peak performance and increased flexibility. By incorporating additional ceramic and an aluminum filter capacitor, the power module EVAL board demonstrates the low output ripple, fast transient response, and low conducted and radiated EMI performance of the device. Adjusting the output voltage, optimizing the control loop circuitry, and fine-tuning the filter capacitance is ease, with convenient size and placement of the passive components on the board. Finally, the excellent thermal performance of the power modules is enhanced using a 4-layer 1oz copper PCB.

    Features

    • Integrated shielded inductor (inside module)
    • VIN = 6V to 42V
    • Precision enable UVLO - 8V
    • 3.3V output (output voltage is adjustable by changing 1 or 2 resistors)
    • Operates at full load up to 80°C ambient at 12V input
    • Efficiency
      • Up to 92% (LMZ14203/LMZ12003)
    • Thermal performance
      • θJA = 20°C/W
      • θJC = 1.9°C/W
    • Uses 0805 passives on front side for easy modification of values to match requirements
    • 1.705 in. x 3.03 in. (5.8 cm x 5.8 cm) 4-layer 1oz copper PCB

    Contents

    • LMZ14202 2A SIMPLE SWITCHER® Power Module with 42V Maximum Input Voltage Evaluation Board
    • Application Note 2024 for the LMZ14202 Evaluation Board

    Other Resources




    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
    LMZ14202TZ-ADJ/NOPB

    1556.015
    TO-PMOD73245DetailN/AN/A
    NSUZXYTTE#
    LMZ14202
    TZ-ADJ
    LMZ14202TZE-ADJ/NOPB

    1556.015
    TO-PMOD73245DetailN/AN/A
    NSUZXYTTE#
    LMZ14202
    TZ-ADJ
    LMZ14202TZX-ADJ/NOPB

    1556.015
    TO-PMOD73245DetailN/AN/A
    NSUZXYTTE#
    LMZ14202
    TZ-ADJ

    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 LMZ14202.

    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 LMZ14202 is located at RoHS Status.

    Design Tools
    TitleSizeDate
    Thermal Resistance Estimate (xls)  

    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)
    LMZ14202TZ-ADJABCD15004268000639400011814314958
    LMZ14202TZE-ADJABCD15004268000639400011814314958
    LMZ14202TZX-ADJABCD15004268000639400011814314958

    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 LMZ14202.

    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 LMZ14202 is located at RoHS Status.

    SIMPLE SWITCHER® Power Module Overview
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    Multi-Load Power Supply Design with WEBENCH Power Architect
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    SIMPLE SWITCHER Modules Power Avnet Spartan-6 Development Kit
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    SIMPLE SWITCHER® Power Module Overview
    Date: 2010-01-25
    Length: 0:04:53
    Multi-Load Power Supply Design with WEBENCH Power Architect
    Date: 2010-01-21
    Length: 0:17:00
    SIMPLE SWITCHER Modules Power Avnet Spartan-6 Development Kit
    Date: 2010-02-16
    Length: 0:19:38
    [Information as of 8-Feb-2012]