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UC2879DW - Texas Instruments

Description: Texas Instruments UC2879DW, Quad PWM Soft Switching Controller, 300 kHz, 20-Pin SOIC

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UC2879DW - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DW (R-PDSO-G20)
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UC2879DW - Texas Instruments  - 3D model - Small Outline Packages - DW (R-PDSO-G20)
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UC2879DW Details

  • Manufacturer Part Number:

    UC2879DW

  • 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:

    ALSO HAS CONTROL MODE OF IPK, ALSO HAS CONTROL TECHNIQUE OF RESONANT

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT/VOLTAGE-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    20 V

  • Input Voltage-Min:

    11 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e4

  • Length:

    12.8 mm

  • Moisture Sensitivity Level:

    2

  • Number of Functions:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    0.1 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP20,.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):

    35 mA

  • Supply Voltage-Max (Vsup):

    29 V

  • Supply Voltage-Min (Vsup):

    10.75 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    PUSH-PULL

  • Switching Frequency-Max:

    300 kHz

  • Technology:

    BIPOLAR

  • 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:

    7.5 mm

UC2879DW 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).
  • Choose a transformer with a turns ratio that matches the input and output voltage requirements. Ensure the transformer's core material and design can handle the frequency and power requirements. TI recommends a transformer with a magnetizing inductance of at least 10 μH.
  • The UC2879DW can handle up to 100 W of output power, but this depends on the specific application, input voltage, and transformer design. Ensure the IC and surrounding components can handle the maximum output current and power.
  • Use an external current sense resistor (Rcs) to monitor the output current. The UC2879DW has a built-in overcurrent protection (OCP) circuit that can be triggered by an external signal. Set the OCP threshold by selecting the appropriate Rcs value.
  • The VCC pin powers the internal logic and control circuits. Power the UC2879DW with a 5 V to 15 V supply, and ensure the voltage is stable and regulated to prevent malfunction or damage.

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UC2879DW 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 UC2879DWG4 Texas Instruments

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Part Image UC2879DWTR Rochester Electronics LLC

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Part Image UC3879DW Unitrode Corporation

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Part Image UC2879DWTR Unitrode Corporation

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Part Image UC3879DWTRG4 Texas Instruments

Switching Controller, Voltage-mode, 0.1A, 240kHz Switching Freq-Max, BIPolar, PDSO20

For a full list of alternate parts for UC2879DW, check out Findchips.com