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L4973V3.3 - STMicroelectronics

Description: Stepdown switch regulator,L4973V3.3 3.5A STMicroelectronics L4973V3.3 Step-Down Switching Regulator 3.5A, Adjustable, 3.26 → 3.46 V PDIP, 18-Pin

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L4973V3.3 - STMicroelectronics PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - DIP-18_2020
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L4973V3.3 - STMicroelectronics  - 3D model - Dual-In-Line Packages - DIP-18_2020
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L4973V3.3 Details

  • Manufacturer Part Number:

    L4973V3.3

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    DIP

  • Package Description:

    LEAD FREE, PLASTIC, DIP-18

  • Pin Count:

    18

  • 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-PDIP-T18

  • JESD-609 Code:

    e3

  • Length:

    24.8 mm

  • Number of Functions:

    1

  • Number of Terminals:

    18

  • Operating Temperature-Max:

    150 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    5.5 A

  • Output Voltage-Max:

    3.31 V

  • Output Voltage-Min:

    3.29 V

  • Output Voltage-Nom:

    3.3 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP18,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Peak Reflow Temperature (Cel):

    NOT SPECIFIED

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    5.1 mm

  • Surface Mount:

    NO

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    300 kHz

  • Technology:

    BCDMOS

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

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

    NOT SPECIFIED

  • Width:

    7.62 mm

L4973V3.3 Frequently Asked Questions (FAQs)

  • The L4973V3.3 can handle input voltages up to 15V, but it's recommended to keep it below 12V for optimal performance and reliability.
  • 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 IC and use a good quality PCB layout.
  • The L4973V3.3 requires a minimum load current of 5mA to regulate properly. If the load current is less than 5mA, the output voltage may not be regulated accurately.
  • The L4973V3.3 is rated for operation up to 125°C, but its performance may degrade at high temperatures. It's recommended to derate the output current and voltage according to the temperature derating curve in the datasheet.
  • The output voltage of the L4973V3.3 is fixed at 3.3V, but it can be adjusted using an external resistor divider network. The output voltage can be calculated using the formula: Vout = 3.3V * (1 + R1/R2), where R1 and R2 are the resistors in the divider network.

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L4973V3.3 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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