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LTC4274CUHF#PBF - Analog Devices

Description: LINEAR TECHNOLOGY - LTC4274CUHF#PBF - IC, POE CONTROLLER, 3.6V, 38QFN

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LTC4274CUHF#PBF - Analog Devices - PCB symbol
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PCB Footprints
LTC4274CUHF#PBF - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - UHF Package 38-Lead Plastic QFN (5mm × 7mm)
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3D Models
LTC4274CUHF#PBF - Analog Devices - 3D model - Quad Flat No-Lead - UHF Package 38-Lead Plastic QFN (5mm × 7mm)
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LTC4274CUHF#PBF Details

  • Manufacturer Part Number:

    LTC4274CUHF#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    QFN-38

  • Pin Count:

    38

  • Manufacturer Package Code:

    05-08-1701

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • JESD-30 Code:

    R-PQCC-N38

  • JESD-609 Code:

    e3

  • Length:

    7 mm

  • Moisture Sensitivity Level:

    1

  • Number of Terminals:

    38

  • Operating Temperature-Max:

    70 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Equivalence Code:

    LCC38,.27X.2,20

  • Package Shape:

    RECTANGULAR

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    0.8 mm

  • Supply Voltage-Max:

    57 V

  • Supply Voltage-Min:

    45 V

  • Supply Voltage-Nom:

    54 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    5 mm

  • uPs/uCs/Peripheral ICs Type:

    PSE CONTROLLER

LTC4274CUHF#PBF Frequently Asked Questions (FAQs)

  • A good PCB layout for the LTC4274CUHF involves keeping the input and output traces short and away from each other, using a solid ground plane, and placing the input and output capacitors close to the device. A 4-layer PCB with a dedicated power plane and a dedicated ground plane is recommended.
  • To ensure proper power-up and power-down of the LTC4274CUHF, it is recommended to follow a controlled power-up sequence, where the input voltage is applied before the enable pin is asserted. During power-down, the enable pin should be de-asserted before the input voltage is removed.
  • The maximum allowed capacitance on the output of the LTC4274CUHF is 10uF. Exceeding this value may cause instability or oscillations in the device.
  • Yes, the LTC4274CUHF can be used in a hot-swap application, but it requires additional circuitry to limit the inrush current and ensure a controlled power-up sequence. A hot-swap controller or a current-limiting circuit may be necessary to prevent damage to the device.
  • To troubleshoot issues with the LTC4274CUHF, start by checking the PCB layout and ensuring that it follows the recommended layout guidelines. Verify that the input and output capacitors are properly sized and placed. Check the input voltage and ensure it is within the recommended range. Use an oscilloscope to monitor the output voltage and current, and look for signs of oscillations or instability.

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LTC4274CUHF#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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Part Image LTC4274IUHF#PBF Analog Devices Inc

CMOS, PQCC38