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L4973D5.1 - STMicroelectronics

Description: L4973D5.1, Switching Regulator, Buck Controller, 3.5A, Adjustable, 5.1V, 300kHz, 20-Pin SO

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L4973D5.1 - STMicroelectronics PCB footprint - Small Outline Packages - Small Outline Packages - L4973D5.1-1
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L4973D5.1 - STMicroelectronics  - 3D model - Small Outline Packages - L4973D5.1-1
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L4973D5.1 Details

  • Manufacturer Part Number:

    L4973D5.1

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Package Description:

    SOP, SOP20,.4

  • Pin Count:

    20

  • Reach Compliance Code:

    Compliant

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    0

  • 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-PDSO-G20

  • JESD-609 Code:

    e3

  • Length:

    12.8 mm

  • Moisture Sensitivity Level:

    3

  • Number of Functions:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    150 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    5.5 A

  • Output Voltage-Max:

    5.11 V

  • Output Voltage-Min:

    5.09 V

  • Output Voltage-Nom:

    5.1 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP20,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    250

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    2.65 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    300 kHz

  • Technology:

    BCDMOS

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    7.5 mm

L4973D5.1 Frequently Asked Questions (FAQs)

  • The maximum input voltage that can be applied to the L4973D5 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 minimum ESR (Equivalent Series Resistance) of 0.1 ohms. Also, keep the input and output capacitors close to the IC and use a good quality PCB layout.
  • The maximum output current that the L4973D5 can deliver is 1.5A, but it's recommended to keep it below 1.2A for reliable operation and to prevent overheating.
  • The output voltage of the L4973D5 can be adjusted by using a resistor divider network between the output and the ADJ pin. The output voltage can be calculated using the formula: Vout = 1.235 x (1 + R1/R2), where R1 and R2 are the resistors in the divider network.
  • The EN (enable) pin on the L4973D5 is used to turn the regulator on or off. When the EN pin is high, the regulator is enabled, and when it's low, the regulator is disabled. This pin can be used to implement power-saving features or to turn the regulator on and off under software control.

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L4973D5.1 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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