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UCC28742DBVT - Texas Instruments

Description: High-Efficiency Flyback Controller With Optocoupler Feedback

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UCC28742DBVT - Texas Instruments - PCB symbol
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PCB Footprints
UCC28742DBVT - Texas Instruments PCB footprint - SOT23 (6-Pin) - SOT23 (6-Pin) - DBV0006A
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UCC28742DBVT - Texas Instruments - 3D model - SOT23 (6-Pin) - DBV0006A
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UCC28742DBVT Details

  • Manufacturer Part Number:

    UCC28742DBVT

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Country Of Origin:

    Mainland China, Malaysia, Philippines, Thailand

  • 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:

    35 V

  • Input Voltage-Min:

    9 V

  • Input Voltage-Nom:

    25 V

  • JESD-30 Code:

    R-PDSO-G6

  • JESD-609 Code:

    e4

  • Length:

    2.9 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    6

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    LSSOP

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, LOW PROFILE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    1.45 mm

  • Supply Current-Max (Isup):

    2.4 mA

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    105 kHz

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.95 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    1.6 mm

UCC28742DBVT Frequently Asked Questions (FAQs)

  • A good PCB layout for the UCC28742DBVT involves keeping the high-frequency switching nodes (e.g., SW and VIN) away from sensitive analog nodes, using a solid ground plane, and minimizing loop areas. TI provides a recommended layout in the datasheet and application notes.
  • Choose a transformer with a turns ratio that matches the desired output voltage, and ensure it can handle the maximum output current. Consider factors like core material, wire size, and insulation to ensure reliable operation. TI provides guidelines for transformer selection in the datasheet and application notes.
  • The maximum ambient temperature for the UCC28742DBVT is 85°C, but this can be derated based on the specific application and thermal design. Ensure proper thermal management to prevent overheating and ensure reliable operation.
  • The UCC28742DBVT has a built-in overcurrent protection feature. Set the OCSET pin to the desired current limit, and the IC will automatically shut down if the current exceeds this limit. You can also use external circuitry to enhance overcurrent protection.
  • While the UCC28742DBVT is primarily designed for isolated topologies, it can be used in non-isolated topologies with some modifications. However, this may require additional components and design considerations to ensure safe and reliable operation.

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UCC28742DBVT 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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Part Image UCC28742DBVR Texas Instruments

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