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LTC4270AIUKG#PBF - Analog Devices

Description: Power Over Ethernet Controller 12 Channel 802.3at (PoE+), 802.3af (PoE), LTPoE++ 52-QFN (7x8)

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LTC4270AIUKG#PBF - Analog Devices - PCB symbol
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PCB Footprints
LTC4270AIUKG#PBF - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - UKG Package 52-Lead Plastic QFN (7mm × 8mm)
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3D Models
LTC4270AIUKG#PBF - Analog Devices - 3D model - Quad Flat No-Lead - UKG Package 52-Lead Plastic QFN (7mm × 8mm)
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LTC4270AIUKG#PBF Details

  • Manufacturer Part Number:

    LTC4270AIUKG#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    QFN-52

  • Pin Count:

    52

  • Manufacturer Package Code:

    05-08-1729

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • JESD-30 Code:

    R-PQCC-N52

  • JESD-609 Code:

    e3

  • Length:

    8 mm

  • Moisture Sensitivity Level:

    1

  • Number of Terminals:

    52

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Equivalence Code:

    LCC52,.27X.32,20

  • 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:

    7 mm

  • uPs/uCs/Peripheral ICs Type:

    PSE CONTROLLER

LTC4270AIUKG#PBF Frequently Asked Questions (FAQs)

  • A good PCB layout for the LTC4270 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. Additionally, it's recommended to use a separate analog and digital ground plane to minimize noise coupling.
  • To ensure proper power-up and configuration, follow the recommended power-up sequence, which is to apply VCC first, followed by VEE. Also, make sure to configure the device correctly by setting the correct voltage levels on the EN and SCL pins, and ensuring that the SDA pin is properly terminated.
  • The maximum cable length supported by the LTC4270 depends on the specific application and the type of cable used. However, as a general guideline, the device can support cable lengths up to 100 meters at a data rate of 100 Mbps. For longer cable lengths, it's recommended to use repeaters or active cables.
  • To troubleshoot issues with the LTC4270, start by checking the power supply voltages and ensuring that they are within the recommended range. Next, verify that the device is properly configured and that the communication protocol is correct. Use a logic analyzer or oscilloscope to debug the communication signals, and check for any signs of noise or interference.
  • Yes, the LTC4270 is designed to support hot-swap applications. The device has built-in overvoltage protection and undervoltage lockout, which allows it to safely handle hot-swapping of devices. However, it's still important to follow proper hot-swap design guidelines and ensure that the device is properly powered down before removal.

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LTC4270AIUKG#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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