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UCC3946DTR - Texas Instruments

Description: Microprocessor Supervisor with Watchdog Timer

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UCC3946DTR - Texas Instruments - PCB symbol
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PCB Footprints
UCC3946DTR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D0008A
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3D Models
UCC3946DTR - Texas Instruments - 3D model - Small Outline Packages - D0008A
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UCC3946DTR Details

  • Manufacturer Part Number:

    UCC3946DTR

  • 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:

    RESET THRESHOLD VOLTAGE IS 1.235V

  • 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

UCC3946DTR Frequently Asked Questions (FAQs)

  • A good PCB layout for the UCC3946DTR involves separating the input and output stages, 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 UCC3946DTR 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 UCC3946DTR is rated for operation from -40°C to 85°C. However, the device may still function outside of this range, but with reduced performance and reliability.
  • The UCC3946DTR 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 types of applications.
  • To troubleshoot issues with the UCC3946DTR, start by checking the PCB layout and component selection to ensure they meet the recommended specifications. Next, verify that the input and output voltages are within the recommended ranges. If the issue persists, try reducing the input voltage or adding additional filtering or decoupling capacitors.

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UCC3946DTR 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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