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LM2578AN/NOPB - Texas Instruments

Description: Texas Instruments LM2578AN/NOPB, Step Down DC-DC Converter, 750mA, Adjustable, 1 (Min.) V, 8-Pin PDIP

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LM2578AN/NOPB - Texas Instruments - PCB symbol
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LM2578AN/NOPB - Texas Instruments PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - P (R-PDIP-T8)
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LM2578AN/NOPB - Texas Instruments - 3D model - Dual-In-Line Packages - P (R-PDIP-T8)
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LM2578AN/NOPB Details

  • Manufacturer Part Number:

    LM2578AN/NOPB

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    DIP

  • Pin Count:

    8

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Analog IC - Other Type:

    SWITCHING REGULATOR

  • Input Voltage-Max:

    40 V

  • Input Voltage-Min:

    2 V

  • Input Voltage-Nom:

    5 V

  • JESD-30 Code:

    R-PDIP-T8

  • JESD-609 Code:

    e4

  • Length:

    5.59 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Outputs:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    0.75 A

  • Output Voltage-Max:

    36 V

  • Output Voltage-Min:

    1 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP8,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    5.8 mm

  • Supply Current-Max (Isup):

    4 mA

  • Surface Mount:

    NO

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    24 kHz

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

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

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    6.35 mm

LM2578AN/NOPB Frequently Asked Questions (FAQs)

  • The maximum input voltage is 40V, but it's recommended to keep it below 35V for reliable operation.
  • The inductor value depends on the output voltage, output current, and switching frequency. A good starting point is to use the inductor value recommended in the datasheet (e.g., 22µH for the LM2578AN/NOPB). You can also use online inductor selection tools or consult with a TI engineer for more guidance.
  • The feedback pin is used to regulate the output voltage. Connect the feedback pin to the output voltage through a resistive divider network, with the center tap connected to the FB pin. The resistive divider should be chosen to provide a voltage of 1.23V (±1%) at the FB pin for proper regulation.
  • Ensure good thermal design by providing adequate heat sinking, using a thermally conductive PCB material, and keeping the component away from heat sources. Monitor the junction temperature (TJ) and ensure it stays below the maximum rating of 125°C.
  • The LM2578AN/NOPB is rated for operation up to 125°C, but its performance may degrade at high temperatures. For high-temperature applications, consider using a more thermally robust regulator or taking additional thermal design precautions.

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LM2578AN/NOPB Overview

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To find more CAD model downloads similar to this part, try a partial part number search, like LM257, or try a keyword search, such as Switching Regulator or Controllers

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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