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LM217K - STMicroelectronics

Description: Linear Voltage Regulator IC Positive Adjustable 1 Output 1.5A TO-3

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LM217K - STMicroelectronics - PCB symbol
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PCB Footprints
LM217K - STMicroelectronics PCB footprint - Other - Other - TO-3_2026-1.5
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3D Models
LM217K - STMicroelectronics - 3D model - Other - TO-3_2026-1.5
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LM217K Details

  • Manufacturer Part Number:

    LM217K

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    TO-204AA

  • Package Description:

    ROHS COMPLIANT, TO-3, 2 PIN

  • Pin Count:

    2

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    0

  • Adjustability:

    ADJUSTABLE

  • Dropout Voltage1-Nom:

    3 V

  • Input-Output Voltage Differential-Max:

    40 V

  • Input-Output Voltage Differential-Min:

    3 V

  • JESD-30 Code:

    O-XBFM-P2

  • JESD-609 Code:

    e3

  • Line Regulation-Max (%/V):

    0.05

  • Load Regulation-Max(%):

    0.3%

  • Number of Functions:

    1

  • Number of Outputs:

    1

  • Number of Terminals:

    2

  • Operating Temperature TJ-Max:

    150 °C

  • Operating Temperature TJ-Min:

    -25 °C

  • Output Current1-Max:

    1.5 A

  • Output Voltage1-Max:

    37 V

  • Output Voltage1-Min:

    1.2 V

  • Package Body Material:

    UNSPECIFIED

  • Package Code:

    TO-3

  • Package Equivalence Code:

    TO-204/-3

  • Package Shape:

    ROUND

  • Package Style:

    FLANGE MOUNT

  • Qualification Status:

    Not Qualified

  • Regulator Type:

    ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR

  • Surface Mount:

    NO

  • Technology:

    BIPOLAR

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    PIN/PEG

  • Terminal Position:

    BOTTOM

LM217K Frequently Asked Questions (FAQs)

  • The maximum power dissipation of the LM217K is dependent on the package type and thermal conditions. For the TO-220 package, the maximum power dissipation is around 20W, while for the D²PAK package, it is around 15W. However, it's recommended to check the thermal derating curves in the datasheet to ensure safe operation.
  • To ensure stability of the LM217K voltage regulator, it's essential to follow the recommended layout and component selection guidelines in the datasheet. This includes using a suitable output capacitor with a minimum ESR (Equivalent Series Resistance) of 0.5 ohms, and placing the capacitor close to the regulator. Additionally, the input capacitor should be selected based on the input voltage and current requirements.
  • While the LM217K can deliver up to 3A of output current, it's not recommended to use it as a high-current voltage regulator without proper heat sinking and thermal management. The regulator's internal thermal protection will limit the output current to prevent overheating, which may not be suitable for high-current applications. In such cases, it's recommended to consider a more suitable high-current voltage regulator or a switching regulator.
  • To protect the LM217K from input voltage surges and transients, it's recommended to add a TVS (Transient Voltage Suppressor) diode or a varistor at the input of the regulator. This will help to clamp the input voltage and prevent damage to the regulator. Additionally, a fuse or a PTC (Positive Temperature Coefficient) thermistor can be used to protect the regulator from overcurrent conditions.
  • The LM217K is rated for operation up to 125°C, but its performance and reliability may degrade at high temperatures. It's essential to consider the thermal derating curves and ensure that the regulator is properly heat sunk and thermally managed. Additionally, the output voltage and current may vary with temperature, so it's recommended to check the datasheet for temperature-related specifications and limitations.

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LM217K 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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