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UCC2891DR - Texas Instruments

Description: Flyback, Forward Converter Regulator Positive, Isolation Capable Output Step-Up/Step-Down - DC-DC Controller IC 16-SOIC

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UCC2891DR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D (R-PDSO-G16)
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UCC2891DR - Texas Instruments  - 3D model - Small Outline Packages - D (R-PDSO-G16)
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UCC2891DR Details

  • Manufacturer Part Number:

    UCC2891DR

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Pin Count:

    16

  • Country Of Origin:

    Mainland China, Mexico, Philippines, Taiwan

  • 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:

    16 V

  • Input Voltage-Min:

    8.5 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    R-PDSO-G16

  • JESD-609 Code:

    e4

  • Length:

    9.9 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    2.5 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP16,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max (Isup):

    3 mA

  • Supply Voltage-Max (Vsup):

    16 V

  • Supply Voltage-Min (Vsup):

    8.5 V

  • Supply Voltage-Nom (Vsup):

    12 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    1000 kHz

  • Technology:

    BICMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

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

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    3.9 mm

UCC2891DR Frequently Asked Questions (FAQs)

  • TI recommends a 4-layer PCB with a solid ground plane, and placing the UCC2891DR close to the input capacitors and output inductors. Additionally, keep the high-frequency components (e.g., switching node, bootstrap capacitor) away from sensitive analog circuits.
  • Use TI's online tools, such as the Power Stage Designer or the Webench Power Designer, to select optimal external components based on your specific application requirements (e.g., input voltage, output voltage, output current).
  • Ensure good thermal contact between the UCC2891DR and a heat sink or PCB thermal plane. Use thermal interface material (e.g., thermal tape, thermal grease) to fill gaps. Keep the heat sink or thermal plane away from high-voltage nodes and ensure good airflow.
  • Use the UCC2891DR's built-in overcurrent protection (OCP) feature by connecting a sense resistor to the OCP pin. For fault detection, monitor the UCC2891DR's fault pin, which indicates overvoltage, undervoltage, or overtemperature conditions.
  • Set the soft-start time based on your application's requirements (e.g., 1-10 ms). For voltage regulation, adjust the feedback resistors (RFBT and RFB) to achieve the desired output voltage and stability.

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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 UCC2891D Texas Instruments

Switching Controller, Current-mode, 2.5A, 1000kHz Switching Freq-Max, BICMOS, PDSO16

Part Image UCC2891DG4 Texas Instruments

Switching Controller, Current-mode, 2.5A, 1000kHz Switching Freq-Max, BICMOS, PDSO16