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LM3429MH - Texas Instruments

Description: N-Channel Controller for Constant Current LED Drivers

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LM3429MH - Texas Instruments - PCB symbol
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LM3429MH - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - PWP
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LM3429MH - Texas Instruments - 3D model - Small Outline Packages - PWP
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LM3429MH Details

  • Manufacturer Part Number:

    LM3429MH

  • Pbfree Code:

    No

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    TSSOP

  • Package Description:

    LEAD FREE, TSSOP-14

  • Pin Count:

    14

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • Data Input Mode:

    SERIAL

  • Input Characteristics:

    SCHMITT TRIGGER

  • Interface IC Type:

    LED DISPLAY DRIVER

  • JESD-30 Code:

    R-PDSO-G14

  • Length:

    5 mm

  • Multiplexed Display Capability:

    NO

  • Number of Functions:

    1

  • Number of Segments:

    1

  • Number of Terminals:

    14

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Characteristics:

    CONSTANT-CURRENT

  • Output Polarity:

    TRUE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HTSSOP

  • Package Shape:

    RECTANGULAR

  • Package Style:

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

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.1 mm

  • Supply Voltage-Max:

    75 V

  • Supply Voltage-Min:

    4.5 V

  • Supply Voltage-Nom:

    14 V

  • Supply Voltage1-Max:

    75 V

  • Supply Voltage1-Min:

    4.5 V

  • Supply Voltage1-Nom:

    14 V

  • Surface Mount:

    YES

  • Technology:

    BICMOS

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

  • Width:

    4.4 mm

LM3429MH Frequently Asked Questions (FAQs)

  • Texas Instruments recommends a 2-layer or 4-layer PCB with a solid ground plane on the bottom layer to help dissipate heat. The device should be placed near a thermal pad or a heat sink to improve thermal performance.
  • To ensure stable output voltage regulation, it is recommended to use a minimum output capacitance of 10uF with an ESR of less than 1 ohm. Additionally, the input capacitor should be placed as close to the VIN pin as possible to reduce noise and ripple.
  • Although the datasheet specifies a maximum input voltage of 42V, it is recommended to limit the input voltage to 40V to ensure reliable operation and to prevent damage to the device.
  • The power dissipation of the LM3429MH can be calculated using the formula: Pd = (VIN - VOUT) x IOUT + (VIN x IQ), where IQ is the quiescent current. The calculated power dissipation should be within the recommended operating range to ensure reliable operation.
  • Texas Instruments recommends using a pi-filter configuration with a series inductor and shunt capacitors to reduce EMI. The values of the inductor and capacitors should be chosen based on the specific application and frequency range of interest.

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LM3429MH 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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