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UCC28704DBVT-1 - Texas Instruments

Description: Off-Line Constant-Voltage Constant-Current Flyback Controller With Primary-Side Regulation (PSR)

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UCC28704DBVT-1 - Texas Instruments PCB footprint - SOT23 (6-Pin) - SOT23 (6-Pin) - DBV0006A HEIGHT 1.45
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3D Models
UCC28704DBVT-1 - Texas Instruments  - 3D model - SOT23 (6-Pin) - DBV0006A HEIGHT 1.45
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UCC28704DBVT-1 Details

  • Manufacturer Part Number:

    UCC28704DBVT-1

  • 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

  • Date Of Intro:

    2016-02-27

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT/VOLTAGE-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    450 V

  • Input Voltage-Min:

    21 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

  • Output Current-Max:

    5 A

  • Output Voltage-Max:

    80 V

  • Output Voltage-Min:

    5 V

  • 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):

    2.65 mA

  • Supply Voltage-Nom (Vsup):

    25 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    85 kHz

  • Technology:

    BICMOS

  • 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

UCC28704DBVT-1 Frequently Asked Questions (FAQs)

  • A good PCB layout for the UCC28704DBVT-1 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 suitable turns ratio, core material, and winding configuration to match the UCC28704DBVT-1's operating frequency and power requirements. TI provides guidelines for transformer selection in the datasheet and application notes.
  • The maximum ambient temperature for the UCC28704DBVT-1 is 85°C, but the device can operate up to 125°C junction temperature. Ensure proper thermal design and heat sinking to maintain a safe operating temperature.
  • The UCC28704DBVT-1 has a built-in overcurrent protection feature. Set the OCSET pin to the desired current limit, and the device will automatically shut down if the current exceeds this limit. You can also use external circuitry to enhance overcurrent protection.
  • The UCC28704DBVT-1 is designed for isolated converters, but it can also be used in non-isolated converters with proper design considerations. Ensure the device is properly configured and the output voltage is within the recommended range.

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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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