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L4931CD35-TR - STMicroelectronics

Description: LDO Regulator 3.5V 0.25A SOIC8 L4931CD35-TR, Low Dropout Voltage Regulator, 0.25A, 3.5 V ±2%, 8-Pin SO

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L4931CD35-TR - STMicroelectronics PCB footprint - Small Outline Packages - Small Outline Packages - SO 8_
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L4931CD35-TR Details

  • Manufacturer Part Number:

    L4931CD35-TR

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Package Description:

    SOP-8

  • Pin Count:

    8

  • Country Of Origin:

    Mainland China

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    0

  • Adjustability:

    FIXED

  • Dropout Voltage1-Max:

    0.8 V

  • Dropout Voltage1-Nom:

    0.4 V

  • Input Voltage Absolute-Max:

    20 V

  • Input Voltage-Max:

    20 V

  • Input Voltage-Min:

    4.3 V

  • JESD-30 Code:

    R-PDSO-G8

  • JESD-609 Code:

    e4

  • Length:

    4.9 mm

  • Line Regulation-Max:

    0.018%

  • Load Regulation-Max:

    0.038%

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Outputs:

    1

  • Number of Terminals:

    8

  • Operating Temperature TJ-Max:

    125 °C

  • Operating Temperature TJ-Min:

    -40 °C

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -25 °C

  • Output Current1-Max:

    0.25 A

  • Output Voltage1-Max:

    3.64 V

  • Output Voltage1-Min:

    3.36 V

  • Output Voltage1-Nom:

    3.5 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP8,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Packing Method:

    TR

  • Peak Reflow Temperature (Cel):

    NOT SPECIFIED

  • Qualification Status:

    Not Qualified

  • Regulator Type:

    FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR

  • Seated Height-Max:

    1.75 mm

  • Surface Mount:

    YES

  • Technology:

    BIPOLAR

  • 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

  • Voltage Tolerance-Max:

    4%

  • Width:

    3.9 mm

L4931CD35-TR Frequently Asked Questions (FAQs)

  • STMicroelectronics provides a recommended PCB layout in their application note AN10211, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
  • Follow the recommended soldering profile in the datasheet, and ensure the PCB is designed with a sufficient thermal relief pattern to prevent thermal damage. Additionally, use a solder paste with a high melting point and a reflow oven with a controlled temperature profile.
  • The maximum allowed voltage drop across the input and output pins is not explicitly stated in the datasheet, but as a general rule, it's recommended to keep the voltage drop below 1V to ensure stable operation and prevent overheating.
  • Yes, the L4931CD35-TR can operate in high-temperature environments, but the output current and power dissipation must be derated according to the temperature derating curve provided in the datasheet. For example, at 125°C, the maximum output current is reduced to 0.5A.
  • Use the equations provided in the datasheet to calculate the power dissipation (PD) and junction temperature (TJ) based on the input voltage, output voltage, output current, and ambient temperature. For example, PD = (VIN - VOUT) x IOUT, and TJ = TA + (PD x RθJA), where RθJA is the junction-to-ambient thermal resistance.

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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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