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L4938ND - STMicroelectronics

Description: Linear Voltage Regulator IC Positive Adjustable (Fixed) 2 Output 50mA, 500mA 20-SO

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L4938ND - STMicroelectronics PCB footprint - Small Outline Packages - Small Outline Packages - SO20
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L4938ND - STMicroelectronics  - 3D model - Small Outline Packages - SO20
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L4938ND Details

  • Manufacturer Part Number:

    L4938ND

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Package Description:

    SOP-20

  • Pin Count:

    20

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    0

  • Adjustability:

    FIXED/ADJUSTABLE

  • Dropout Voltage1-Max:

    0.4 V

  • Dropout Voltage1-Nom:

    0.2 V

  • Dropout Voltage2-Max:

    0.6 V

  • Input Voltage Absolute-Max:

    28 V

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e0

  • Length:

    12.8 mm

  • Line Regulation-Max:

    0.02%

  • Load Regulation-Max:

    0.05%

  • Load Regulation-Max(%):

    1%

  • Number of Functions:

    1

  • Number of Outputs:

    2

  • Number of Terminals:

    20

  • Operating Temperature TJ-Max:

    150 °C

  • Operating Temperature TJ-Min:

    -55 °C

  • Output Current1-Max:

    0.05 A

  • Output Current2-Max:

    0.5 A

  • Output Voltage1-Max:

    5.1 V

  • Output Voltage1-Min:

    4.9 V

  • Output Voltage1-Nom:

    5 V

  • Output Voltage2-Max:

    20 V

  • Output Voltage2-Min:

    5 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP20,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Qualification Status:

    Not Qualified

  • Regulator Type:

    FIXED/ADJUSTABLE POSITIVE MULTIPLE OUTPUT LDO REGULATOR

  • Seated Height-Max:

    2.65 mm

  • Surface Mount:

    YES

  • Technology:

    BIPOLAR

  • Terminal Finish:

    TIN LEAD

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Voltage Tolerance-Max:

    2%

  • Width:

    7.5 mm

L4938ND Frequently Asked Questions (FAQs)

  • The maximum input voltage that can be applied to the L4938ND is 26V, although the recommended maximum operating input voltage is 20V to ensure reliable operation.
  • To ensure stability, a minimum output capacitance of 10uF with an ESR (Equivalent Series Resistance) of less than 1 ohm is recommended. Additionally, the input capacitor should be at least 1uF with an ESR of less than 5 ohms.
  • The dropout voltage of the L4938ND is typically around 1.5V, which means the input voltage must be at least 1.5V higher than the output voltage to ensure proper regulation.
  • The L4938ND is rated for operation up to 150°C, but the maximum junction temperature (TJ) should not exceed 150°C. Thermal derating may be necessary for high-temperature applications.
  • The power dissipation of the L4938ND can be calculated using the formula: Pd = (Vin - Vout) x Iout, where Vin is the input voltage, Vout is the output voltage, and Iout is the output current.

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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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