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LM3743MM-1000/NOPB - Texas Instruments

Description: High-Performance Synchronous Buck Controller with Comprehensive Fault Protection Features

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LM3743MM-1000/NOPB - Texas Instruments - PCB symbol
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LM3743MM-1000/NOPB - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DGS0010A
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LM3743MM-1000/NOPB - Texas Instruments - 3D model - Small Outline Packages - DGS0010A
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LM3743MM-1000/NOPB Details

  • Manufacturer Part Number:

    LM3743MM-1000/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

  • Additional Feature:

    OUTPUT VOLTAGE ADJUSTABLE DOWN TO 0.8V

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    VOLTAGE-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    5.5 V

  • Input Voltage-Min:

    3 V

  • Input Voltage-Nom:

    3.3 V

  • JESD-30 Code:

    S-PDSO-G10

  • JESD-609 Code:

    e3

  • Length:

    3 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Outputs:

    1

  • Number of Terminals:

    10

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    10 A

  • Output Voltage-Max:

    4.6 V

  • Output Voltage-Min:

    0.8 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    TSSOP

  • Package Shape:

    SQUARE

  • Package Style:

    SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    1.1 mm

  • Supply Current-Max (Isup):

    3 mA

  • 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:

    0.5 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    3 mm

LM3743MM-1000/NOPB Frequently Asked Questions (FAQs)

  • Texas Instruments recommends a 2-layer or 4-layer PCB with a solid ground plane and a thermal relief pattern under the device to improve thermal performance. A minimum of 2 oz copper thickness is recommended for the thermal pad.
  • To ensure reliable startup and shutdown, it is recommended to add a soft-start circuit to limit the inrush current and prevent voltage overshoot. Additionally, a capacitor can be added between the VIN and GND pins to filter out noise and ensure a clean startup.
  • The maximum allowable voltage on the EN pin is 6V. Exceeding this voltage may damage the device. It is recommended to use a voltage divider or a buffer circuit to ensure the EN pin voltage remains within the specified range.
  • The LM3743MM-1000/NOPB is rated for operation up to 125°C. However, the device's performance and reliability may degrade at high temperatures. It is recommended to derate the output current and voltage according to the temperature derating curve provided in the datasheet.
  • To troubleshoot oscillations or instability issues, check the PCB layout for proper decoupling and grounding. Ensure that the input and output capacitors are of sufficient value and type. Also, verify that the feedback loop is properly compensated and that the device is operated within its specified frequency range.

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LM3743MM-1000/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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