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UC2875DWP - Texas Instruments

Description: UC2875DWP, PWM Soft Switching Controller, Quad Phase Shift Resonant, 1000 kHz, 28-Pin SOIC

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UC2875DWP - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DW (R-PDSO-G28)
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UC2875DWP - Texas Instruments  - 3D model - Small Outline Packages - DW (R-PDSO-G28)
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UC2875DWP Details

  • Manufacturer Part Number:

    UC2875DWP

  • Brand Name:

    Texas Instruments

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Pin Count:

    28

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • Additional Feature:

    CAN ALSO BE CONFIGURED IN CURRENT MODE; PWM CONTROL TECHNIQUE ALSO POSSIBLE

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT/VOLTAGE-MODE

  • Control Technique:

    RESONANT CONTROL

  • Input Voltage-Max:

    20 V

  • Input Voltage-Min:

    11 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    R-PDSO-G28

  • JESD-609 Code:

    e4

  • Length:

    17.9 mm

  • Moisture Sensitivity Level:

    2

  • Number of Functions:

    1

  • Number of Terminals:

    28

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -25 °C

  • Output Current-Max:

    3 A

  • Output Voltage-Max:

    5.08 V

  • Output Voltage-Min:

    4.92 V

  • Output Voltage-Nom:

    5 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP28,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    2.65 mm

  • Supply Current-Max (Isup):

    30 mA

  • Supply Voltage-Max (Vsup):

    29 V

  • Supply Voltage-Min (Vsup):

    10.75 V

  • Supply Voltage-Nom (Vsup):

    12 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    PUSH-PULL

  • Switching Frequency-Max:

    1000 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    OTHER

  • 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:

    7.5 mm

UC2875DWP Frequently Asked Questions (FAQs)

  • TI recommends a 4-layer PCB with a solid ground plane, and placing the IC close to the input capacitors. Also, keep the high-frequency components (e.g., transformer, diodes) away from the low-frequency components (e.g., input capacitors, output filter).
  • Use a transformer with a turns ratio of 1:1.2 to 1:1.5, and a magnetizing inductance of 10-20 μH. Also, ensure the transformer's leakage inductance is minimized to reduce voltage spikes.
  • Use low-ESR ceramic or film capacitors with a value of 10-22 μF, depending on the input voltage and current requirements. Ensure the capacitor's voltage rating is at least 1.5 times the maximum input voltage.
  • Set the OCP threshold (Rocp) to 1.5-2 times the maximum expected output current. Ensure the sense resistor (Rs) is placed close to the output inductor, and its value is calculated based on the OCP threshold and the output inductor's current rating.
  • Use a second-order LC filter with a damping ratio of 0.5-1.0. The output inductor's value should be 1-5 μH, and the output capacitor's value should be 10-22 μF, depending on the output voltage and current requirements.

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UC2875DWP 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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