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UC2903N - Texas Instruments

Description: Texas Instruments UC2903N, Quad-Channel Voltage Supervisor 18-Pin, PDIP

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UC2903N - Texas Instruments - PCB symbol
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PCB Footprints
UC2903N - Texas Instruments PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - N (R-PDIP-T)
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UC2903N - Texas Instruments - 3D model - Dual-In-Line Packages - N (R-PDIP-T)
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UC2903N Details

  • Manufacturer Part Number:

    UC2903N

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    DIP

  • Package Description:

    GREEN, PLASTIC, DIP-18

  • Pin Count:

    18

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • Adjustable Threshold:

    YES

  • Analog IC - Other Type:

    VOLTAGE SUPERVISOR/RESET IC

  • JESD-30 Code:

    R-PDIP-T18

  • JESD-609 Code:

    e4

  • Length:

    22.48 mm

  • Number of Channels:

    4

  • Number of Functions:

    1

  • Number of Terminals:

    18

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP18,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    5.08 mm

  • Supply Current-Max (Isup):

    15 mA

  • Supply Voltage-Max (Vsup):

    40 V

  • Supply Voltage-Min (Vsup):

    8 V

  • Supply Voltage-Nom (Vsup):

    15 V

  • Surface Mount:

    NO

  • Technology:

    BIPOLAR

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    NICKEL PALLADIUM GOLD

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

UC2903N Frequently Asked Questions (FAQs)

  • Texas Instruments recommends a compact layout with the UC2903N placed close to the power source, and using a ground plane to reduce EMI. Additionally, it's recommended to keep the input and output traces separate and use a common mode choke to filter out noise.
  • To ensure the UC2903N operates within its SOA, it's recommended to use a soft-start circuit to limit the inrush current during startup, and to use a voltage supervisor to monitor the input voltage and prevent the device from operating outside its specified range during shutdown.
  • Texas Instruments recommends using a low-ESR ceramic capacitor with a value of 10uF to 22uF for the input capacitor, depending on the specific application and input voltage range.
  • To troubleshoot oscillations or instability issues, check the layout and placement of the device, ensure the input and output capacitors are properly sized and placed, and verify that the feedback loop is properly compensated. Additionally, check for any signs of overheating or excessive current draw.
  • The UC2903N is rated for operation from -40°C to 85°C, but it's recommended to derate the device's performance and ensure proper thermal management to prevent overheating above 70°C.

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UC2903N Overview

Use the download button to access the UC2903N schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like UC290, or try a keyword search, such as Power Management Circuits

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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