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LM20343MHX/NOPB - Texas Instruments

Description: 4.5-36V, 3A Current Mode Synchronous Buck Regulator with Adjustable Frequency

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LM20343MHX/NOPB - Texas Instruments - PCB symbol
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PCB Footprints
LM20343MHX/NOPB - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - PWP0020A
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LM20343MHX/NOPB - Texas Instruments - 3D model - Small Outline Packages - PWP0020A
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LM20343MHX/NOPB Details

  • Manufacturer Part Number:

    LM20343MHX/NOPB

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    TSSOP

  • Pin Count:

    20

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Additional Feature:

    OUTPUT VOLTAGE IS ADJUSTABLE FROM 0.8 TO 5V

  • Analog IC - Other Type:

    SWITCHING REGULATOR

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    36 V

  • Input Voltage-Min:

    4.5 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e3

  • Length:

    6.5 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Outputs:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    3 A

  • Output Voltage-Max:

    32 V

  • Output Voltage-Min:

    0.8 V

  • Output Voltage-Nom:

    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:

    BUCK

  • Switching Frequency-Max:

    1000 kHz

  • Technology:

    BICMOS

  • 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

LM20343MHX/NOPB Frequently Asked Questions (FAQs)

  • A good PCB layout for optimal thermal performance involves placing the device near a thermal pad or a heat sink, and ensuring good airflow around the device. The datasheet provides some guidelines, but a more detailed application note from TI provides additional recommendations.
  • To ensure a stable and accurate output voltage, it's essential to follow the recommended capacitor selection and placement guidelines, as well as to minimize noise and ripple on the input voltage. Additionally, using a high-quality output capacitor with low ESR and a stable input voltage can help achieve a stable output voltage.
  • While the datasheet specifies a maximum input voltage of 42V, it's essential to consider the maximum voltage rating of the specific package and the operating conditions. In general, it's recommended to derate the input voltage by 10-20% to ensure reliable operation.
  • To protect the device from overcurrent and overheating, it's essential to implement overcurrent protection (OCP) and overtemperature protection (OTP) mechanisms. This can be achieved using external components or by using a device with built-in OCP and OTP features.
  • The recommended input capacitor type and value depend on the specific application and operating conditions. In general, a low-ESR ceramic capacitor with a value between 1-10uF is recommended. However, it's essential to consult the datasheet and application notes for specific guidance.

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LM20343MHX/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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