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LM3431MHX/NOPB - Texas Instruments

Description: LED Lighting Drivers 3-Channel Constant Current LED Driver with Integrated Boost Controller 28-HTSSOP -40 to 125

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LM3431MHX/NOPB - Texas Instruments - PCB symbol
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LM3431MHX/NOPB - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - PWP0028A
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LM3431MHX/NOPB - Texas Instruments - 3D model - Small Outline Packages - PWP0028A
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LM3431MHX/NOPB Details

  • Manufacturer Part Number:

    LM3431MHX/NOPB

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    36 V

  • Input Voltage-Min:

    4.5 V

  • JESD-30 Code:

    R-PDSO-G28

  • JESD-609 Code:

    e3

  • Length:

    9.7 mm

  • Moisture Sensitivity Level:

    1

  • Number of Channels:

    3

  • Number of Functions:

    1

  • Number of Outputs:

    3

  • Number of Terminals:

    28

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    0.6 A

  • Output Voltage-Max:

    40 V

  • Output Voltage-Min:

    5.5 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HTSSOP

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    1.2 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BOOST

  • Switching Frequency-Max:

    1000 kHz

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    4.4 mm

LM3431MHX/NOPB Frequently Asked Questions (FAQs)

  • Texas Instruments provides a recommended PCB layout in the LM3431 application note (SLVAU65) that includes thermal vias, copper pours, and component placement guidelines to minimize thermal resistance and ensure optimal performance.
  • To ensure reliable start-up and shutdown, it's essential to follow the recommended soft-start and shutdown procedures outlined in the datasheet. This includes using a soft-start capacitor, limiting the input voltage slew rate, and ensuring the enable pin is properly biased.
  • Operating the LM3431 at high ambient temperatures can reduce its reliability and lifespan. It's essential to consider the thermal derating curves provided in the datasheet and ensure proper heat sinking and airflow to maintain a safe junction temperature.
  • Yes, the LM3431 is qualified for automotive and high-reliability applications. However, it's essential to review the device's AEC-Q100 qualification and follow the recommended design and manufacturing guidelines to ensure compliance with industry standards.
  • Texas Instruments provides a troubleshooting guide in the LM3431 application note (SLVAU65) that covers common issues, such as oscillations, instability, and overvoltage protection. It's essential to review this guide and follow the recommended debugging procedures to identify and resolve issues quickly.

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LM3431MHX/NOPB Overview

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About Texas Instruments

Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.

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