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LT4276CHUFD#PBF - Analog Devices

Description: LTPoE++/PoE+/PoE PD Forward/Flyback Controller

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LT4276CHUFD#PBF - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - LFCSP SIDESOLDERABLE_2023-1
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LT4276CHUFD#PBF - Analog Devices  - 3D model - Quad Flat No-Lead - LFCSP SIDESOLDERABLE_2023-1
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LT4276CHUFD#PBF Details

  • Manufacturer Part Number:

    LT4276CHUFD#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    QFN-28

  • Pin Count:

    28

  • Manufacturer Package Code:

    05-08-1712

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    CONSTANT FREQUENCY

  • Input Voltage-Max:

    60 V

  • Input Voltage-Nom:

    40 V

  • JESD-30 Code:

    R-PQCC-N28

  • JESD-609 Code:

    e3

  • Length:

    5 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    28

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Shape:

    RECTANGULAR

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    0.8 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    320 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    AUTOMOTIVE

  • 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:

    4 mm

LT4276CHUFD#PBF Frequently Asked Questions (FAQs)

  • A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the input and output capacitors close to the IC, and use short, wide traces for the high-current paths.
  • Ensure that the output capacitor has a low ESR, and the input capacitor has a high capacitance. Also, add a small resistor (e.g., 1Ω) in series with the output capacitor to dampen oscillations.
  • The maximum ambient temperature for reliable operation is 85°C. However, the device can operate up to 125°C with derating. Consult the datasheet for thermal derating curves.
  • Yes, the LT4276CHUFD is AEC-Q100 qualified and suitable for high-reliability and automotive applications. However, ensure that you follow the recommended PCB layout, thermal management, and component selection guidelines.
  • Use an oscilloscope to monitor the output voltage and current. Check for input voltage ripple, output capacitor ESR, and thermal issues. Consult the datasheet and application notes for troubleshooting guidelines.

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LT4276CHUFD#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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