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LT1521CST-5#PBF - Analog Devices

Description: LT1521CST-5#PBF, Low Dropout Voltage Regulator, 0.3A, 5 V, -20 → 20 Vin, 4-Pin SOT-223

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Symbol
LT1521CST-5#PBF - Analog Devices - PCB symbol
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PCB Footprints
LT1521CST-5#PBF - Analog Devices PCB footprint - SOT223 (3-Pin) - SOT223 (3-Pin) - ST(SOT-223)
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3D Models
LT1521CST-5#PBF - Analog Devices - 3D model - SOT223 (3-Pin) - ST(SOT-223)
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LT1521CST-5#PBF Details

  • Manufacturer Part Number:

    LT1521CST-5#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Pin Count:

    3

  • Manufacturer Package Code:

    05-08-1630

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Adjustability:

    FIXED

  • Dropout Voltage1-Max:

    0.75 V

  • Dropout Voltage1-Nom:

    0.5 V

  • Input Voltage Absolute-Max:

    20 V

  • Input Voltage-Max:

    20 V

  • Input Voltage-Min:

    5.5 V

  • JESD-30 Code:

    R-PDSO-G4

  • JESD-609 Code:

    e3

  • Length:

    6.505 mm

  • Line Regulation-Max:

    0.02%

  • Load Regulation-Max:

    0.075%

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Outputs:

    1

  • Number of Terminals:

    4

  • Operating Temperature TJ-Max:

    125 °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:

    SOP

  • Package Equivalence Code:

    SOT-223

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Regulator Type:

    FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR

  • Seated Height-Max:

    1.8 mm

  • Surface Mount:

    YES

  • Technology:

    BIPOLAR

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    2.3 mm

  • Terminal Position:

    DUAL

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

    30

  • Voltage Tolerance-Max:

    3%

  • Width:

    3.505 mm

LT1521CST-5#PBF Frequently Asked Questions (FAQs)

  • A good PCB layout for the LT1521CST-5 involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing trace lengths and widths to reduce noise and EMI.
  • To ensure stability, ensure that the output capacitor is properly sized, the input voltage is within the recommended range, and the device is operated within the recommended temperature range. Additionally, adding a small capacitor (e.g., 10nF) between the output and ground can help prevent oscillations.
  • The maximum output current capability of the LT1521CST-5 is 5A, but this can be limited by the thermal performance of the device and the PCB. Ensure that the device is properly heat-sinked and the PCB is designed to handle the maximum output current.
  • To protect the LT1521CST-5 from input voltage transients and surges, consider adding a TVS (transient voltage suppressor) diode or a voltage clamp circuit at the input. Additionally, ensure that the input capacitor is properly sized and rated for the maximum input voltage.
  • A low-ESR ceramic capacitor (e.g., X5R or X7R) with a value of 10uF to 22uF is recommended for the input capacitor. The capacitor should be rated for the maximum input voltage and have a low equivalent series resistance (ESR) to minimize voltage drops and noise.

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LT1521CST-5#PBF Overview

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About Analog Devices

Analog Devices Inc. is a global leader in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits and software solutions for the industrial, automotive, healthcare, communications industries. Analog Devices serves a diverse range of markets including industrial, automotive, healthcare, energy, aerospace, defense, and consumer electronics industries. Analog Devices’ product portfolio includes a wide range of ICs, modules, and subsystems.

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