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LTC4257IDD-1#PBF - Analog Devices

Description: IC POE CNTRL 1 CHANNEL 8DFN

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LTC4257IDD-1#PBF - Analog Devices - PCB symbol
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PCB Footprints
LTC4257IDD-1#PBF - Analog Devices PCB footprint - Small Outline No-lead - Small Outline No-lead - 8-Lead Plastic DFN (3mm × 3mm
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LTC4257IDD-1#PBF - Analog Devices - 3D model - Small Outline No-lead - 8-Lead Plastic DFN (3mm × 3mm
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LTC4257IDD-1#PBF Details

  • Manufacturer Part Number:

    LTC4257IDD-1#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Pin Count:

    8

  • Manufacturer Package Code:

    05-08-1698

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    8.5

  • Additional Feature:

    REQUIRES A NEGATIVE SUPPLY OF 48V

  • Adjustable Threshold:

    NO

  • Analog IC - Other Type:

    PoE POWERED DEVICE CONTROLLER

  • JESD-30 Code:

    S-PDSO-N8

  • JESD-609 Code:

    e3

  • Length:

    3 mm

  • Moisture Sensitivity Level:

    1

  • Number of Channels:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    VSON

  • Package Shape:

    SQUARE

  • Package Style:

    SMALL OUTLINE, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    0.8 mm

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    3 mm

LTC4257IDD-1#PBF Frequently Asked Questions (FAQs)

  • A good PCB layout for the LTC4257IDD-1#PBF involves keeping the input and output traces short and separate, using a solid ground plane, and placing the device close to the power source. Additionally, it's recommended to use a 4-layer board with a dedicated power plane and a dedicated ground plane.
  • To ensure proper thermal management, it's recommended to provide a thermal path from the device to a heat sink or a metal plate. The device's exposed pad should be soldered to a copper plane on the PCB, which should be connected to a heat sink or a metal plate. Additionally, the device should be placed in a well-ventilated area to prevent overheating.
  • The recommended input capacitor value for the LTC4257IDD-1#PBF is 10uF to 22uF, with a voltage rating of at least 2x the input voltage. A low-ESR ceramic capacitor, such as an X5R or X7R type, is recommended due to its low equivalent series resistance and high ripple current capability.
  • To troubleshoot issues with the LTC4257IDD-1#PBF, start by checking the input voltage and current, as well as the output voltage and current. Verify that the device is properly soldered and that the PCB layout is correct. Check for any signs of overheating, such as a hot device or a burning smell. Use an oscilloscope to check for any oscillations or noise on the output. If the issue persists, consult the datasheet and application notes for further guidance.
  • The LTC4257IDD-1#PBF is a commercial-grade device, but it can be used in high-reliability or high-temperature applications with proper derating and qualification. Consult the datasheet and application notes for guidance on derating the device for high-temperature operation. Additionally, consider using a higher-reliability version of the device, such as the LTC4257IDD-1#TRPBF, which is designed for automotive and industrial applications.

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LTC4257IDD-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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