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UCC3946D - Texas Instruments

Description: Microprocessor Supervisor with Watchdog Timer

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UCC3946D - Texas Instruments - PCB symbol
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PCB Footprints
UCC3946D - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D0008A SOIC
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UCC3946D - Texas Instruments - 3D model - Small Outline Packages - D0008A SOIC
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UCC3946D Details

  • Manufacturer Part Number:

    UCC3946D

  • 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

  • Adjustable Threshold:

    YES

  • Analog IC - Other Type:

    VOLTAGE SUPERVISOR/RESET IC

  • JESD-30 Code:

    R-PDSO-G8

  • JESD-609 Code:

    e4

  • Length:

    4.9 mm

  • Moisture Sensitivity Level:

    2

  • Number of Channels:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    70 °C

  • 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):

    0.018 mA

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    2 V

  • Surface Mount:

    YES

  • Technology:

    BICMOS

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

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

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Threshold Voltage-Nom:

    +1.235V

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

    30

  • Width:

    3.9 mm

UCC3946D Frequently Asked Questions (FAQs)

  • A good PCB layout for the UCC3946D involves keeping the input and output stages separate, using a star-ground configuration, and placing the input and output capacitors close to the IC. Additionally, using a solid ground plane and minimizing trace lengths can help reduce noise and EMI.
  • The choice of input and output capacitors for the UCC3946D depends on the specific application and operating conditions. In general, low-ESR capacitors with a high ripple current rating are recommended. A minimum capacitance of 10uF is recommended for the input capacitor, and 22uF or higher for the output capacitor.
  • The UCC3946D is rated for operation from -40°C to 85°C. However, the device's performance and reliability may be affected at extreme temperatures. It's recommended to derate the device's power handling and operating frequency at high temperatures.
  • The UCC3946D is a commercial-grade device and may not meet the requirements for high-reliability or aerospace applications. Texas Instruments offers other devices that are specifically designed and qualified for these applications, such as the UCC3946QML.
  • Common issues with the UCC3946D can often be traced to poor PCB layout, inadequate decoupling, or incorrect component selection. Check the datasheet for recommended layout and component guidelines, and use a scope to verify the device's operating frequency and voltage waveforms.

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UCC3946D 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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