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UC3902D - Texas Instruments

Description: Texas Instruments UC3902D, Load Share Controller, 8-Pin, SOIC

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UC3902D - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D0008A
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UC3902D - Texas Instruments  - 3D model - Small Outline Packages - D0008A
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UC3902D Details

  • Manufacturer Part Number:

    UC3902D

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Pin Count:

    8

  • Country Of Origin:

    Mexico

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Additional Feature:

    UNDER VOLTAGE LOCKOUT

  • Adjustable Threshold:

    YES

  • Analog IC - Other Type:

    VOLTAGE SUPERVISOR/RESET IC

  • Control Mode:

    VOLTAGE-MODE

  • Input Voltage-Max:

    20 V

  • JESD-30 Code:

    R-PDSO-G8

  • JESD-609 Code:

    e4

  • Length:

    4.9 mm

  • Moisture Sensitivity Level:

    1

  • Number of Channels:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    70 °C

  • Output Current-Max:

    6 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP8,.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):

    10 mA

  • Supply Voltage-Max (Vsup):

    10 V

  • Supply Voltage-Min (Vsup):

    4 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK-BOOST

  • 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:

    3.9 mm

UC3902D Frequently Asked Questions (FAQs)

  • TI recommends a 4-layer PCB with a solid ground plane, and placing the UC3902D close to the input capacitors and output inductors to minimize loop areas and reduce EMI. Additionally, a shielded inductor and a common-mode choke can be used to further reduce EMI.
  • To ensure stability, TI recommends using a compensation network consisting of R1, R2, C1, and C2, and following the recommended component values and PCB layout guidelines. Additionally, the output voltage should be monitored and adjusted to prevent oscillation.
  • The UC3902D can handle input voltages up to 40V, but TI recommends operating it within the recommended input voltage range of 10V to 30V for optimal performance and reliability.
  • The output voltage of the UC3902D can be calculated using the formula: Vout = (R2 / R1) * (Vin - Vf), where Vin is the input voltage, Vf is the forward voltage drop of the output diode, and R1 and R2 are the feedback resistors.
  • The UC3902D can deliver output currents up to 2A, but the actual output current capability depends on the input voltage, output voltage, and thermal considerations. TI recommends derating the output current based on the ambient temperature and PCB thermal design.

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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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