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LTC4271IUF#PBF - Analog Devices

Description: Power Switch ICs - POE / LAN 12-Port PoE/PoE+/LTPoE++ PSE Cntr

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LTC4271IUF#PBF - Analog Devices - PCB symbol
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PCB Footprints
LTC4271IUF#PBF - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - UF Package 24-Lead Plastic QFN (4mm × 4mm)_2023
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LTC4271IUF#PBF - Analog Devices - 3D model - Quad Flat No-Lead - UF Package 24-Lead Plastic QFN (4mm × 4mm)_2023
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LTC4271IUF#PBF Details

  • Manufacturer Part Number:

    LTC4271IUF#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    QFN-24

  • Pin Count:

    24

  • Manufacturer Package Code:

    05-08-1697

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    8.5

  • Adjustable Threshold:

    NO

  • Analog IC - Other Type:

    INTEGRATED POWER MANAGEMENT UNIT

  • JESD-30 Code:

    S-PQCC-N24

  • Length:

    4 mm

  • Moisture Sensitivity Level:

    1

  • Number of Channels:

    12

  • Number of Functions:

    1

  • Number of Terminals:

    24

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Equivalence Code:

    LCC24,.16SQ,20

  • Package Shape:

    SQUARE

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    0.8 mm

  • Supply Current-Max (Isup):

    15 mA

  • Supply Voltage-Max (Vsup):

    3.6 V

  • Supply Voltage-Min (Vsup):

    3 V

  • Supply Voltage-Nom (Vsup):

    3.3 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

  • Threshold Voltage-Nom:

    +2.7V

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

    30

  • Width:

    4 mm

LTC4271IUF#PBF Frequently Asked Questions (FAQs)

  • A good PCB layout for the LTC4271 involves keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing the length of the traces between the IC and the capacitors. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
  • To ensure stability, make sure to follow the recommended component values and PCB layout guidelines. Also, ensure that the input and output capacitors are of high quality and have low ESR. Additionally, a minimum of 10uF capacitance on the output is recommended to ensure stability.
  • The maximum input voltage that the LTC4271 can handle is 36V. Exceeding this voltage can cause damage to the IC. It's recommended to add input voltage protection, such as a TVS diode, to prevent damage from voltage spikes or transients.
  • The LTC4271 is rated for operation up to 125°C. However, the IC's performance and reliability may degrade at high temperatures. It's recommended to derate the IC's performance and ensure proper thermal management, such as using a heat sink, to ensure reliable operation in high-temperature environments.
  • To troubleshoot issues with the LTC4271, start by checking the input voltage, output voltage, and current draw. Verify that the component values and PCB layout match the recommended design. Use an oscilloscope to check for oscillations or noise on the output. Also, check for thermal issues, such as overheating, and ensure proper thermal management.

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LTC4271IUF#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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