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L4978 - STMicroelectronics

Description: L4978, Switching Regulator, Buck Controller, 2A, Adjustable, 3.3 → 50 V, 300 kHz, 8-Pin PDIP

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L4978 - STMicroelectronics PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - DIP_8
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L4978 - STMicroelectronics  - 3D model - Dual-In-Line Packages - DIP_8
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L4978 Details

  • Manufacturer Part Number:

    L4978

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    DIP

  • Package Description:

    MINI, PLASTIC, DIP-8

  • Pin Count:

    8

  • Country Of Origin:

    Mainland China

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    16 Weeks

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    6

  • Analog IC - Other Type:

    SWITCHING REGULATOR

  • Control Mode:

    VOLTAGE-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    55 V

  • Input Voltage-Min:

    8 V

  • Input Voltage-Nom:

    24 V

  • JESD-30 Code:

    R-PDIP-T8

  • JESD-609 Code:

    e3

  • Length:

    10.3 mm

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    150 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    3.5 A

  • Output Voltage-Max:

    50 V

  • Output Voltage-Min:

    3.3 V

  • Output Voltage-Nom:

    3.36 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP8,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    5.08 mm

  • Supply Current-Max (Isup):

    6 mA

  • Surface Mount:

    NO

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    300 kHz

  • Technology:

    BCDMOS

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

L4978 Frequently Asked Questions (FAQs)

  • The maximum input voltage that can be applied to the L4978 is 40V, but it's recommended to keep it below 35V for reliable operation.
  • To ensure stability, make sure to use a minimum output capacitance of 10uF, and a maximum ESR of 1 ohm. Also, keep the input and output capacitors close to the regulator.
  • The L4978 can regulate properly with a minimum load current of 5mA, but it's recommended to have a minimum load of 10mA for optimal performance.
  • The L4978 is rated for operation up to 150°C, but its performance may degrade at high temperatures. It's recommended to derate the output current and voltage at high temperatures.
  • Use a TVS (Transient Voltage Suppressor) diode or a voltage clamp circuit to protect the L4978 from input voltage surges and transients.

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L4978 Overview

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About STMicroelectronics

STMicroelectronics (ST) is a global semiconductor company that designs, manufactures, and markets a broad range of integrated circuits (ICs), discrete devices, and other electronic components. STMicroelectronics offers a diverse portfolio of semiconductor products covering a wide range of applications and industries. Their product categories include microcontrollers, analog and mixed-signal ICs, MEMS (Micro-Electro-Mechanical Systems) sensors, power management ICs, RF (Radio Frequency) transceivers, aut

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