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UC3872MTR - Texas Instruments

Description: Ballast Controller Controller 57kHz ~ 78kHz No 16-SSOP

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UC3872MTR - Texas Instruments - PCB symbol
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PCB Footprints
UC3872MTR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DBQ0016A
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3D Models
UC3872MTR - Texas Instruments - 3D model - Small Outline Packages - DBQ0016A
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UC3872MTR Details

  • Manufacturer Part Number:

    UC3872MTR

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Pin Count:

    16

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Additional Feature:

    RESONANT CONTROL TECHNIQUE IS ALSO AVAILABLE

  • Analog IC - Other Type:

    FLUORESCENT LIGHT CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    RESONANT CONTROL

  • Input Voltage-Max:

    24 V

  • Input Voltage-Min:

    4.5 V

  • Input Voltage-Nom:

    5 V

  • JESD-30 Code:

    R-PDSO-G16

  • JESD-609 Code:

    e4

  • Length:

    4.9 mm

  • Moisture Sensitivity Level:

    2

  • Number of Functions:

    1

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    70 °C

  • Output Current-Max:

    0.1 A

  • Output Voltage-Max:

    3.06 V

  • Output Voltage-Min:

    2.94 V

  • Output Voltage-Nom:

    3 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SSOP16,.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):

    14 mA

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    PUSH-PULL

  • Switching Frequency-Max:

    200 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

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

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.635 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    3.9 mm

UC3872MTR Frequently Asked Questions (FAQs)

  • Texas Instruments recommends a compact layout with the controller, power FETs, and output capacitors placed close together. The input and output capacitors should be placed as close as possible to the controller. Additionally, a solid ground plane and a separate power plane are recommended to reduce noise and EMI.
  • The output inductor selection depends on the output voltage, current, and frequency of operation. A general rule of thumb is to choose an inductor with a value between 1-10 μH, and a current rating that is at least 1.5 times the maximum output current. The inductor's DC resistance and core material should also be considered to minimize losses and ensure stability.
  • The UC3872MTR has a maximum junction temperature rating of 150°C. However, it's recommended to keep the junction temperature below 125°C to ensure reliable operation and minimize thermal stress.
  • Yes, the UC3872MTR can be used in a synchronous rectification configuration. However, it requires additional external circuitry to control the synchronous rectifier FETs. Texas Instruments provides application notes and reference designs to help with the implementation.
  • Texas Instruments recommends using an oscilloscope to monitor the voltage and current waveforms at the input and output of the converter. Additionally, checking the controller's pin voltages and current sense signals can help identify issues. The UC3872MTR also has a built-in undervoltage lockout (UVLO) and overcurrent protection (OCP) features that can be used to debug issues.

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UC3872MTR 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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