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UC2879N - Texas Instruments

Description: Texas Instruments UC2879N, Quad PWM Soft Switching Controller, 300 kHz, 20-Pin PDIP

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UC2879N - Texas Instruments PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - 20 Ld PDIP
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UC2879N - Texas Instruments  - 3D model - Dual-In-Line Packages - 20 Ld PDIP
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UC2879N Details

  • Manufacturer Part Number:

    UC2879N

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    DIP

  • Pin Count:

    20

  • Country Of Origin:

    Malaysia

  • 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-PDIP-T20

  • JESD-609 Code:

    e4

  • Length:

    25.4 mm

  • 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:

    DIP

  • Package Equivalence Code:

    DIP20,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    5.08 mm

  • Supply Current-Max (Isup):

    35 mA

  • Supply Voltage-Max (Vsup):

    29 V

  • Supply Voltage-Min (Vsup):

    10.75 V

  • Surface Mount:

    NO

  • Switcher Configuration:

    PUSH-PULL

  • Switching Frequency-Max:

    300 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

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

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

UC2879N Frequently Asked Questions (FAQs)

  • TI recommends a 4-layer PCB with a solid ground plane, and placing the UC2879N near the input capacitors to minimize loop area and reduce EMI. Additionally, keep the high-current paths short and away from sensitive analog circuits.
  • To ensure stability, ensure that the output voltage is properly decoupled with a low-ESR capacitor, and that the feedback loop is properly compensated. Also, avoid using long feedback traces and keep the feedback components close to the UC2879N.
  • Although the datasheet specifies a maximum input voltage of 40V, TI recommends limiting the input voltage to 30V to ensure reliable operation and to prevent damage to the internal voltage regulator.
  • Yes, the UC2879N can be used in a synchronous rectification topology, but it requires additional external circuitry to control the synchronous rectifier. TI provides application notes and reference designs to help with the implementation.
  • The minimum input capacitance can be calculated using the formula: CIN = (IOUT x ΔI / (ΔV x fSW)), where IOUT is the output current, ΔI is the input ripple current, ΔV is the input voltage ripple, and fSW is the switching frequency.

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UC2879N 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 UC3879N Unitrode Corporation

Switching Controller, Current-mode, 0.1A, 300kHz Switching Freq-Max, BIPolar, PDIP20

Part Image UC3879NG4 Texas Instruments

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Part Image UC1879J Texas Instruments

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Part Image UC2879J Texas Instruments

Switching Controller, Voltage-mode, 0.1A, 240kHz Switching Freq-Max, BIPolar, CDIP20

Part Image UC2879NG4 Texas Instruments

Switching Controller, Current/voltage-mode, 0.1A, 300kHz Switching Freq-Max, BIPolar, PDIP20

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