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LTC4274AIUHF-1#PBF - Analog Devices

Description: LINEAR TECHNOLOGY - LTC4274AIUHF-1#PBF - PSE, CNTRL, 38.7W, 1MHZ, 38QFN

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LTC4274AIUHF-1#PBF - Analog Devices - PCB symbol
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PCB Footprints
LTC4274AIUHF-1#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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LTC4274AIUHF-1#PBF - Analog Devices - 3D model - Quad Flat No-Lead - UHF Package 38-Lead Plastic QFN (5mm × 7mm)
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LTC4274AIUHF-1#PBF Details

  • Manufacturer Part Number:

    LTC4274AIUHF-1#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:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • JESD-30 Code:

    R-PQCC-N38

  • JESD-609 Code:

    e3

  • Length:

    7 mm

  • Moisture Sensitivity Level:

    1

  • Number of Terminals:

    38

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °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) - annealed

  • 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

LTC4274AIUHF-1#PBF Frequently Asked Questions (FAQs)

  • A good PCB layout for the LTC4274 involves keeping the input and output traces short and wide, 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. Additionally, the datasheet provides a recommended PCB layout and land pattern that should be followed.
  • The LTC4274 has a specific power-up and power-down sequence that must be followed to ensure proper operation. The EN pin should be pulled high after the input voltage has reached its nominal value, and the EN pin should be pulled low before the input voltage is removed. The datasheet provides a detailed power-up and power-down sequence that should be followed.
  • The maximum output current of the LTC4274 is 2A. However, the output current should be derated based on the ambient temperature and the input voltage. The datasheet provides a detailed derating curve that should be consulted to determine the maximum output current for a given application.
  • The LTC4274's output voltage droop during high-current loads can be compensated for by adding an external resistor and capacitor to the output. The datasheet provides a detailed compensation circuit and calculation method that should be followed.
  • The recommended input capacitor type for the LTC4274 is a low-ESR ceramic capacitor with a value of 10uF to 22uF. The input capacitor should be placed close to the device and should have a voltage rating that is at least 1.5 times the input voltage.

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LTC4274AIUHF-1#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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