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LDS3985M50R - STMicroelectronics

Description: Linear Voltage Regulator IC Positive Fixed 1 Output 300mA SOT-23-5 -40°C ~ 125°C

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PCB Footprints
LDS3985M50R - STMicroelectronics PCB footprint - SOT23 (5-Pin) - SOT23 (5-Pin) - SOT23-5L_2021
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3D Models
LDS3985M50R - STMicroelectronics  - 3D model - SOT23 (5-Pin) - SOT23-5L_2021
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LDS3985M50R Details

  • Manufacturer Part Number:

    LDS3985M50R

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOT-23

  • Package Description:

    SOT-23, 5 PIN

  • Pin Count:

    5

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    0

  • Adjustability:

    FIXED

  • Dropout Voltage1-Max:

    0.25 V

  • Dropout Voltage1-Nom:

    0.15 V

  • Input Voltage Absolute-Max:

    6 V

  • Input Voltage-Max:

    6 V

  • Input Voltage-Min:

    2.5 V

  • JESD-30 Code:

    R-PDSO-G5

  • JESD-609 Code:

    e3

  • Length:

    2.9 mm

  • Line Regulation-Max:

    0.00475%

  • Load Regulation-Max:

    0.0598%

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Outputs:

    1

  • Number of Terminals:

    5

  • Operating Temperature TJ-Max:

    125 °C

  • Operating Temperature TJ-Min:

    -40 °C

  • Output Current1-Max:

    0.3 A

  • Output Voltage1-Max:

    5.15 V

  • Output Voltage1-Min:

    4.85 V

  • Output Voltage1-Nom:

    5 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    LSSOP

  • Package Equivalence Code:

    TSOP5/6,.11,37

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, LOW PROFILE, SHRINK PITCH

  • Packing Method:

    TR

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Regulator Type:

    FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR

  • Seated Height-Max:

    1.45 mm

  • Surface Mount:

    YES

  • Technology:

    BICMOS

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.95 mm

  • Terminal Position:

    DUAL

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

    30

  • Voltage Tolerance-Max:

    3%

  • Width:

    1.625 mm

LDS3985M50R Frequently Asked Questions (FAQs)

  • A good PCB layout for the LDS3985M50R involves keeping the input and output tracks as short as possible, using a solid ground plane, and placing decoupling capacitors close to the device. A 4-layer PCB with a dedicated power plane and a dedicated ground plane is recommended.
  • To ensure stability, make sure the output capacitor is within the recommended range (22uF to 47uF), the input voltage is within the recommended range (4.5V to 18V), and the device is properly decoupled with a 10uF capacitor on the input and a 100nF capacitor on the output.
  • The maximum output current of the LDS3985M50R is 5A. However, it's recommended to derate the output current based on the ambient temperature and the input voltage to ensure reliable operation.
  • The LDS3985M50R is rated for operation up to 150°C, but the device's performance and reliability may degrade at high temperatures. It's recommended to derate the output current and ensure proper heat sinking to ensure reliable operation in high-temperature environments.
  • To protect the LDS3985M50R from input voltage surges and spikes, use a TVS (Transient Voltage Suppressor) diode or a voltage clamp circuit on the input, and ensure the input capacitor is rated for the maximum expected input voltage.

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LDS3985M50R 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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