National Semiconductor | High-performance Analog

 

 LM3370   

Dual Synchronous Step-Down DC-DC Converter with Dynamic Voltage Scaling Function from the PowerWise® Family
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Features

  • I 2C-compatible interface
  • VOUT1 = 1V to 2V in 50 mV steps
  • VOUT2 = 1.8V to 3.3V in 100 mV steps
  • Automatic PFM/PWM mode switching & Forced PWM mode for low noise operation
  • Spread Spectrum capability using I 2C
  • 600 mA load per channel
  • 2 MHz PWM fixed switching frequency (typ.)
  • The Bucks operate 180° out-of-phase timing offset for noise and input surge current abatement
  • Internal synchronous rectification for high efficiency
  • Internal soft start
  • Power-on-reset function for both outputs
  • 2.7V VIN 5.5V
  • Operates from a single Li-Ion cell or 3 cell NiMH/NiCd batteries and 3.3V/5.5V fixed rails
  • 2.2 µH Inductor, 4.7 µF Input and 10 µF Output Capacitor per channel
  • 16-lead LLP Package (4 mm x 5 mm x 0.8 mm)
  • 20-bump micro SMD Package (3.0 mm x 2.0 mm x 0.6 mm)
  • Description

    The LM3370 is a dual step-down DC-DC converter optimized for powering ultra-low voltage circuits from a single Li-Ion battery and input rail ranging from 2.7V to 5.5V. It provides two outputs with 600 mA load per channel. The output voltage range varies from 1V to 3.3V and can be dynamically controlled using the I 2C-compatible interface. This dynamic voltage scaling function allows processors to achieve maximum performance at the lowest power level. The I 2C-compatible interface can also be used to control auto PFM-PWM/PWM mode selection and other performance enhancing features.

    The LM3370 offers superior features and performance for portable systems with complex power management requirements. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system efficiency. Internal synchronous rectification enhances the converter efficiency without the use of further external devices.

    There is a power-on-reset function that monitors the level of the output voltage to avoid unexpected power losses. The independent enable pin for each output allows for simple and effective power sequencing.

    LM3370 is available in a 4 mm by 5 mm 16-lead non-pullback LLP and a 20-bump micro SMD, 3.0 mm x 2.0 mm x 0.6 mm, package. A high switching frequency—2 MHz (typ)—allows use of tiny surface-mount components including a 2.2 µH inductor.

    Default fixed voltages for the 2 output voltages combination can be customized to fit system requirements by contacting National Semiconductor Corporation.


    Applications

  • Baseband Processors
  • Application Processors (Video, Audio)
  • I/O Power
  • FPGA Power and CPLD



  • Typical Application
    click for larger image


    Block Diagram
    click for larger image



    Typical Performance
    click for larger image


     

    ParametersValues
    Channels 2 Channels
    Output Range 1V-3.3V, 1V to 2V for buck 1; 1.8V to 3.3V for buck 2
    Output1 Topology Buck
    Output2 Topology Buck
    Input Min Voltage 2.7 Volt
    Input Max Voltage 5.5 Volt
    Frequency Min 2000, 1500 kHz
    Frequency Max 2400, 2000 kHz
    Efficiency (peak) 90 %
    Adj Switch Frequency No, Yes
    Output1 VoutMin 1 Volt
    Output1 VoutMax 2 Volt
    Output1 IoutMax 600 mA
    Output2 VoutMin 1.8, 2 Volt
    Output2 VoutMax 3.3 Volt
    Output2 IoutMax 600 mA
    Sync Pin No
    MOSFET Rdson NFET 0.24ohm, PFET 0.39ohm
    SoftStart Yes
    On/Off Pin Yes
    PowerGood / Error Flag No
    Special Features I2C interface, Dynamic Voltage Scaling
    Topology Buck, Voltage Mode
    RegType Switching Regulator
    Step-Down Yes
    Step-Up No
    Inverting No
    Flyback No
    Switching Frequency 2000 kHz
    Multiple Output Capability Yes
    Temperature Min -30 deg C
    Temperature Max 85 deg C
    PowerWise Yes

    Datasheets
    TitleSizeDateOther
    Language
    LM3370 Dual Synchronous Step-Down DC-DC Converter with Dynamic Voltage Scaling Function5436
    Kbytes
    25-Aug-11   


    Application Notes
    TitleSizeDateOther
    Language
    AN-1428: Application Note 1428 LM3370 Evaluation Board11933
    Kbytes
    9-Jan-08 中文
    AN-1840: Application Note 1840 USB I2C Interface Board Reference Manual2769
    Kbytes
    30-Apr-08 


    Other Technical Documents
    TitleTypeDate
    Advanced Topics in Powering FPGAsPower Designer 2007-03-22
    How to Ease EMI Compliance in Power ConvertersExternal Article 2006-10-08
    Implementing Single-Chip FPGA Power SolutionsPower Designer 2007-03-21
    Optimizing Power Management Solutions for Advanced Applications ProcessorsTechnology Edge 2006-02-01

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM3370SD-3013/NOPB


    RoHS Status


    LLP
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    1000
    LM3370SD-3021/NOPB


    RoHS Status


    LLP
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide2000
    DIGI-KEYWorldwide2430
    FARNELLEurope and Asia66
    MOUSERWorldwide975
    RS COMPONENTSWorldwide20
    TAYLORAmericas2000
    $1.15 each at 1K+ pcsreel
    of
    1000
    LM3370SD-3416/NOPB


    RoHS Status


    LLP
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide1994
    MOUSERWorldwide1000
    $1.15 each at 1K+ pcsreel
    of
    1000
    LM3370SD-3621/NOPB


    RoHS Status


    LLP
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide989
    MOUSERWorldwide1000
    $1.15 each at 1K+ pcsreel
    of
    1000
    LM3370SD-3806/NOPB


    RoHS Status


    LLP
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide1997
    MOUSERWorldwide1000
    $1.15 each at 1K+ pcsreel
    of
    1000
    LM3370SD-4221/NOPB


    RoHS Status


    LLP
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    DIGI-KEYWorldwide2331
    FARNELLEurope and Asia191
    MOUSERWorldwide1000
    TAYLORAmericas1000
    $1.15 each at 1K+ pcsreel
    of
    1000
    LM3370SDX-3013/NOPB


    RoHS Status


    LLP
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    4500
    LM3370SDX-3021/NOPB


    RoHS Status


    LLP
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    4500
    LM3370SDX-3416/NOPB


    RoHS Status


    LLP
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    4500
    LM3370SDX-3621/NOPB


    RoHS Status


    LLP
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    4500
    LM3370SDX-3806/NOPB


    RoHS Status


    LLP
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    4500
    LM3370SDX-4221/NOPB


    RoHS Status


    LLP
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    4500
    LM3370TL-2613/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

    Samples

    Contact your distributor
    CALLreel
    of
    N/A
    LM3370TL-3006/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    250
    LM3370TL-3008/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    250
    LM3370TL-3022/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide250
    $1.15 each at 1K+ pcsreel
    of
    250
    LM3370TL-3206/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    250
    LM3370TL-3607/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    250
    LM3370TL-3806/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    250
    LM3370TLX-2613/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

     

    Contact your distributor
    CALLreel
    of
    N/A
    LM3370TLX-3006/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    3000
    LM3370TLX-3008/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    3000
    LM3370TLX-3022/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    3000
    LM3370TLX-3206/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    3000
    LM3370TLX-3607/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    3000
    LM3370TLX-3806/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.15 each at 1K+ pcsreel
    of
    3000

    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 LM3370.

    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 LM3370 is located at RoHS Status.

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    I2C-CPEV/NOPB

    USB I2C Interface BoardFull production
    Lead Free (RoHS)

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    CALLN/A

    Description:

    The USB I2C Interface board interacts with your application hardware via an USB port in a PC. The Microcontroller with flash
    memory enables to control your application hardware and develop specific application functions via software. (National
    Semiconductor does not provide interaction software, which networks both application board and I2C board.)USB I2C Interface
    Board Key

    Features:

    • National's COP8CBE9 microcontroller in a TSSOP package
    • National's USBN9604 IC in a 28-pin CSP package
    • USB 2.0 compatible
    • Bus Powered
    • 24 MHz clock from crystal
    • 8-pin Analog inputs for A/D converter

    System Requirements:

    The following requirements are vital in order to use the USB I2C Interface Module:

    • Windows Operating System (Win98/ME/2000/XP)
    • 32 MB RAM (Minimum)
    • 2 MB available for disk space

    Hardsware Requirement:

    • 5-Pin Mini-B USB 2.0 cable (sold separately)

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM3370SD-3021EV
    LM3370 (LLP) Dual Synchronous Regulator with Dynamic Voltage Scaling Evaluation BoardFull production


     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $60.00 each1

    Description:

    The LM3370SD LLP evaluation board is pre-programmed to 1.2V at VOUT1 and 3.3V at VOUT2 for evaluation purpose (no additional interface hardware is needed). If a different default output option is desired, the same evaluation board can be used by demounting the existing device and replacing it with new voltage option (voltage option can be order from National's website). The device comes with the following default setting:

    • Auto PFM and PWM transition mode when the I2C compatible interface is not enabled.
    • For other settings, I2C compatible interface must be used to enable all other functions.

    The LM3370 is a dual step-down DC-DC converter optimized for powering ultra-low voltage circuits from a single Li-Ion battery and input rail ranging from 2.7V to 5.5V. It provides two outputs with 600mA load per channel. The output voltage range varies from 1V to 3.3V and can be dynamically controlled using the I2C compatible interface. This dynamic voltage scaling function allows processors to achieve maximum performance at the lowest power level. The I2C compatible interface can also be used to control auto PFM-PWM/PWM mode selection and other performance enhancing features.

    The LM3370 offers superior features and performance for portable systems with complex power management requirements. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system efficiency. Internal synchronous rectification enhances the converter efficiency without the use of further external devices.

    Features:

    • I2C compatible interface
            ---VOUT1= 1V to 2V in 50mV steps
            ---VOUT2= 1.8V to 3.3V in 100mV steps
            ---Automatic PFM/PWM mode switching and Forced PWM mode for low noise operation
            ---Spread Spectrum capability using I2C
    • 600mA load per channel
    • 2MHz PWM fixed switching frequency
    • Internal soft start
    • Power-on-reset function for both outputs
    • 2.7V less than or equal to VIN less than or equal to 5.5V
    • Operates from a single Li-Ion cell or 3 cell NiMH/NiCd batteries and 3.3V/5.5V fixed rails
    • 2.2microH Inductor, 4.7microF Input and 10microF Output Capacitor per channel
    • 16-lead LLP Package (4mm x 5mm x 0.8 mm)

    Applications:

    • Baseband Processors
    • Application Processors (Video, Audio)
    • I/O Power FPGA Power and CPLD

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM3370TL-3008EV
    LM3370 (micro SMD) Dual Synchronous Regulator with Dynamic Voltage Scaling Evaluation BoardFull production


     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $50.00 each1

    Description:

    The LM3370TL micro SMD evaluation board is pre-programmed to 1.2V at VOUT1 and 2.0V at VOUT2 for evaluation purpose (no additional interface hardware is needed). If a different default output option is desired, the same evaluation board can be used by demounting the existing device and replacing it with new voltage option (voltage option can be order from National's website). The device comes with the following default setting:

    • Auto PFM and PWM transition mode when the I2C compatible interface is not enabled.
    • For other settings, I2C compatible interface must be used to enable all other functions.

    The LM3370 is a dual step-down DC-DC converter optimized for powering ultra-low voltage circuits from a single Li-Ion battery and input rail ranging from 2.7V to 5.5V. It provides two outputs with 600mA load per channel. The output voltage range varies from 1V to 3.3V and can be dynamically controlled using the I2C compatible interface. This dynamic voltage scaling function allows processors to achieve maximum performance at the lowest power level. The I2C compatible interface can also be used to control auto PFM-PWM/PWM mode selection and other performance enhancing features.

    The LM3370 offers superior features and performance for portable systems with complex power management requirements. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system efficiency. Internal synchronous rectification enhances the converter efficiency without the use of further external devices. The LM3370 evaluation board is a working demonstration of a DUAL step down DC-DC converter.

    Features:

    • I2C compatible interface
      • VOUT1= 1V to 2V in 50mV steps
      • VOUT2 = 1.8V to 3.3V in 100mV steps
      • Automatic PFM/PWM mode switching and Forced PWM mode for low noise operation
      • Spread Spectrum capability using I2C
    • 600mA load per channel
    • 2MHz PWM fixed switching frequency
    • Internal soft start
    • Power-on-reset function for both outputs
    • 2.7V≤ VIN ≤ 5.5V
    • Operates from a single Li-Ion cell or 3 cell NiMH/NiCd batteries and 3.3V/5.5V fixed rails
    • 2.2?H Inductor, 4.7?F Input and 10?F Output Capacitor per channel
    • 16-lead LLP Package (4mm x 5mm x 0.8 mm)

    Applications"

    • Baseband Processors
    • Application Processors (Video, Audio)
    • I/O Power
    • FPGA Power and CPLD



    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
    LM3370SD-3013/NOPB

    50.987
    LLP161260DetailDownloadN/A
    NS
    UZXYTT
    S0003UB
    LM3370SD-3021/NOPB

    50.987
    LLP161260DetailDownloadN/A
    NS
    UZXYTT
    S0003TB
    LM3370SD-3416/NOPB

    50.987
    LLP161260DetailDownloadN/A
    NS
    UZXYTT
    S0003VB
    LM3370SD-3621/NOPB

    50.987
    LLP161260DetailDownloadN/A
    NS
    UZXYTT
    S0004AB
    LM3370SD-3806/NOPB

    50.987
    LLP161260DetailDownloadN/A
    NS
    UZXYTT
    S0003XB
    LM3370SD-4221/NOPB

    50.987
    LLP161260DetailDownloadN/A
    NS
    UZXYTT
    S0003YB
    LM3370SDX-3013/NOPB

    50.987
    LLP161260DetailDownloadN/A
    NS
    UZXYTT
    S0003UB
    LM3370SDX-3021/NOPB

    50.987
    LLP161260DetailDownloadN/A
    NS
    UZXYTT
    S0003TB
    LM3370SDX-3416/NOPB

    50.987
    LLP161260DetailDownloadN/A
    NS
    UZXYTT
    S0003VB
    LM3370SDX-3621/NOPB

    50.987
    LLP161260DetailDownloadN/A
    NS
    UZXYTT
    S0004AB
    LM3370SDX-3806/NOPB

    50.987
    LLP161260DetailDownloadN/A
    NS
    UZXYTT
    S0003XB
    LM3370SDX-4221/NOPB

    50.987
    LLP161260DetailDownloadN/A
    NS
    UZXYTT
    S0003YB
    LM3370TL-2613/NOPB

    MICRO SMD201260DetailDownloadN/A
    XYTT
    I SD1B
    LM3370TL-3006/NOPB

    7.116
    MICRO SMD201260DetailDownloadN/A
    XYTT
    I SPUB
    LM3370TL-3008/NOPB

    7.116
    MICRO SMD201260DetailDownloadN/A
    XYTT
    I SPTB
    LM3370TL-3022/NOPB

    7.116
    MICRO SMD201260DetailDownloadN/A
    XYTT
    I STHB
    LM3370TL-3206/NOPB

    7.116
    MICRO SMD201260DetailDownloadN/A
    XYTT
    I SPXB
    LM3370TL-3607/NOPB

    7.116
    MICRO SMD201260DetailDownloadN/A
    XYTT
    I SPSB
    LM3370TL-3806/NOPB

    7.116
    MICRO SMD201260DetailDownloadN/A
    XYTT
    I SPVB
    LM3370TLX-2613/NOPB

    MICRO SMD201260DetailDownloadN/A
    XYTT
    I SD1B
    LM3370TLX-3006/NOPB

    7.116
    MICRO SMD201260DetailDownloadN/A
    XYTT
    I SPUB
    LM3370TLX-3008/NOPB

    7.116
    MICRO SMD201260DetailDownloadN/A
    XYTT
    I SPTB
    LM3370TLX-3022/NOPB

    7.116
    MICRO SMD201260DetailDownloadN/A
    XYTT
    I STHB
    LM3370TLX-3206/NOPB

    7.116
    MICRO SMD201260DetailDownloadN/A
    XYTT
    I SPXB
    LM3370TLX-3607/NOPB

    7.116
    MICRO SMD201260DetailDownloadN/A
    XYTT
    I SPSB
    LM3370TLX-3806/NOPB

    7.116
    MICRO SMD201260DetailDownloadN/A
    XYTT
    I SPVB

    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 LM3370.

    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 LM3370 is located at RoHS Status.

    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM3370SD-3013CMOS70213010015840003449464325
    LM3370SD-3021CMOS70213010015840003449464325
    LM3370SD-3416CMOS70213010015840003449464325
    LM3370SD-3621CMOS70213010015840003449464325
    LM3370SD-3806CMOS70213010015840003449464325
    LM3370SD-4221CMOS70213010015840003449464325
    LM3370SDX-3013CMOS70213010015840003449464325
    LM3370SDX-3021CMOS70213010015840003449464325
    LM3370SDX-3416CMOS70213010015840003449464325
    LM3370SDX-3621CMOS70213010015840003449464325
    LM3370SDX-3806CMOS70213010015840003449464325
    LM3370SDX-4221CMOS70213010015840003449464325
    LM3370TL-2613CMOS70213010015840003449464325
    LM3370TL-3006CMOS70213010015840003449464325
    LM3370TL-3008CMOS70213010015840003449464325
    LM3370TL-3022CMOS70213010015840003449464325
    LM3370TL-3206CMOS70213010015840003449464325
    LM3370TL-3607CMOS70213010015840003449464325
    LM3370TL-3806CMOS70213010015840003449464325
    LM3370TLX-2613CMOS70213010015840003449464325
    LM3370TLX-3006CMOS70213010015840003449464325
    LM3370TLX-3008CMOS70213010015840003449464325
    LM3370TLX-3022CMOS70213010015840003449464325
    LM3370TLX-3206CMOS70213010015840003449464325
    LM3370TLX-3607CMOS70213010015840003449464325
    LM3370TLX-3806CMOS70213010015840003449464325

    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 LM3370.

    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 LM3370 is located at RoHS Status.

    [Information as of 8-Feb-2012]