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L4971D - STMicroelectronics

Description: L4971D, Switching Regulator, Buck Controller, 1.5A, Adjustable, 3.3 → 50 V, 300 kHz, 16-Pin SO W

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L4971D - STMicroelectronics PCB footprint - Small Outline Packages - Small Outline Packages - SO16W_
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L4971D Details

  • Manufacturer Part Number:

    L4971D

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Package Description:

    SO-16

  • Pin Count:

    16

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    7.1

  • 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-G16

  • JESD-609 Code:

    e4

  • Length:

    10.3 mm

  • Moisture Sensitivity Level:

    3

  • Number of Functions:

    1

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    150 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    3 A

  • Output Voltage-Max:

    50 V

  • Output Voltage-Min:

    3.3 V

  • Output Voltage-Nom:

    3.3 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP16,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    250

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    2.65 mm

  • Supply Current-Max (Isup):

    6 mA

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    300 kHz

  • Technology:

    BCDMOS

  • Terminal Finish:

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

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    NOT SPECIFIED

  • Width:

    7.5 mm

L4971D Frequently Asked Questions (FAQs)

  • The L4971D can handle input voltages up to 40V, but it's recommended to keep it below 35V for reliable operation.
  • The output capacitor should be chosen based on the output voltage and current requirements. A general rule of thumb is to use a capacitor with a value between 10uF to 100uF, and a voltage rating of at least 1.5 times the output voltage.
  • The bootstrap capacitor (CBOOT) is used to generate the high-side gate drive voltage for the internal power MOSFET. It should be a low-ESR ceramic capacitor with a value between 10nF to 100nF.
  • The L4971D has a thermal shutdown feature that turns off the device when it exceeds 150°C. To ensure operation within thermal limits, ensure good heat sinking, use a thermal pad or heat sink, and keep the device away from high-temperature sources.
  • The L4971D can operate with input voltages as low as 7V, but the output voltage regulation may not be guaranteed below 8V.

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L4971D 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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