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L4931ABDT80-TR - STMicroelectronics

Description: Linear Voltage Regulator IC Positive Fixed 1 Output 250mA DPAK

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L4931ABDT80-TR - STMicroelectronics - PCB symbol
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L4931ABDT80-TR - STMicroelectronics PCB footprint - Other - Other - Dpak-2026-5.1
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L4931ABDT80-TR - STMicroelectronics - 3D model - Other - Dpak-2026-5.1
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L4931ABDT80-TR Details

  • Manufacturer Part Number:

    L4931ABDT80-TR

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    TO-252

  • Package Description:

    DPAK-3

  • Pin Count:

    3

  • 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:

    8.8 V

  • JESD-30 Code:

    R-PSSO-G2

  • Length:

    6.5 mm

  • Line Regulation-Max:

    0.02%

  • Load Regulation-Max:

    0.015%

  • Number of Functions:

    1

  • Number of Outputs:

    1

  • Number of Terminals:

    2

  • 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:

    8.16 V

  • Output Voltage1-Min:

    7.84 V

  • Output Voltage1-Nom:

    8 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HSOP

  • Package Equivalence Code:

    SMSIP3H,.38,90TB

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, HEAT SINK/SLUG

  • Packing Method:

    TR

  • Peak Reflow Temperature (Cel):

    NOT SPECIFIED

  • Qualification Status:

    Not Qualified

  • Regulator Type:

    FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR

  • Seated Height-Max:

    2.63 mm

  • Surface Mount:

    YES

  • Technology:

    BIPOLAR

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    2.28 mm

  • Terminal Position:

    SINGLE

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

    NOT SPECIFIED

  • Voltage Tolerance-Max:

    2%

  • Width:

    6.1 mm

L4931ABDT80-TR Frequently Asked Questions (FAQs)

  • STMicroelectronics provides a recommended PCB layout in the 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 to minimize thermal stress.
  • The maximum allowed voltage drop across the regulator output and input pins is typically limited by the internal voltage reference and the dropout voltage. For the L4931ABDT80-TR, the maximum voltage drop is around 1.5V, but it's recommended to keep it below 1V to ensure stable operation and minimize power loss.
  • Yes, the L4931ABDT80-TR can operate in high-temperature environments, but it's essential to derate the output current and power dissipation according to the temperature derating curve provided in the datasheet. For example, at 125°C, the maximum output current is derated to around 70% of the nominal value.
  • Use a combination of visual inspection, voltage measurements, and thermal imaging to identify the root cause of the issue. Check for proper PCB layout, soldering, and component placement. Verify the input voltage, output voltage, and current consumption are within the specified ranges. Use a thermal camera to detect hotspots and identify potential thermal issues.

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L4931ABDT80-TR 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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