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UC3879DW - Texas Instruments

Description: Phase Shift Resonant Controller

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UC3879DW - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DW0020A
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UC3879DW - Texas Instruments  - 3D model - Small Outline Packages - DW0020A
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UC3879DW Details

  • Manufacturer Part Number:

    UC3879DW

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Pin Count:

    20

  • 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:

    70 °C

  • Output Current-Max:

    0.1 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:

    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

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    300 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    COMMERCIAL

  • 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

UC3879DW Frequently Asked Questions (FAQs)

  • The recommended input capacitor value is 10uF to 22uF, with a voltage rating of at least 25V. This ensures stable operation and reduces noise.
  • The inductor value depends on the output voltage, input voltage, and switching frequency. A good starting point is to use the inductor value calculation formula provided in the datasheet, and then adjust based on the specific application requirements.
  • The UC3879DW can deliver up to 3A of output current, but this may vary depending on the input voltage, output voltage, and thermal conditions. It's essential to check the thermal derating curves in the datasheet to ensure reliable operation.
  • The UC3879DW has a built-in overcurrent protection feature. To implement it, connect a sense resistor (Rs) between the output and the GND pin. The IC will shut down if the current exceeds the threshold set by the sense resistor value.
  • The EN pin is used to enable or disable the converter. When the EN pin is high, the converter is enabled, and when it's low, the converter is disabled. This pin can be used to implement power sequencing or to turn off the converter during standby modes.

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UC3879DW 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

0.1 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO20

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 UC3879DW, check out Findchips.com