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LT8641ARUDCM#PBF - Analog Devices

Description: Switching Voltage Regulators 65V 3.5A Silent Switcher

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LT8641ARUDCM#PBF - Analog Devices PCB footprint - Other - Other - 18-LEAD  (3mm × 4mm) PLASTIC QFN
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LT8641ARUDCM#PBF - Analog Devices  - 3D model - Other - 18-LEAD  (3mm × 4mm) PLASTIC QFN
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LT8641ARUDCM#PBF Details

  • Manufacturer Part Number:

    LT8641ARUDCM#PBF

  • Brand Name:

    Analog Devices Inc

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    LFCSP SIDESOLDERABLE

  • Package Description:

    QFN-20/18

  • Pin Count:

    18

  • Manufacturer Package Code:

    LFCSP SIDESOLDERABLE

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Date Of Intro:

    2023-05-08

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    8.5

  • Analog IC - Other Type:

    SWITCHING REGULATOR

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    65 V

  • Input Voltage-Min:

    3 V

  • Input Voltage-Nom:

    4 V

  • JESD-30 Code:

    R-PQCC-N18

  • JESD-609 Code:

    e3

  • Length:

    4 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    18

  • Operating Temperature-Max:

    150 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    3.5 A

  • Output Voltage-Max:

    25 V

  • Output Voltage-Min:

    3.3 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HWQCCN

  • Package Equivalence Code:

    LCC18/20,.12X.16,20

  • Package Shape:

    RECTANGULAR

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    0.8 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    3000 kHz

  • Technology:

    BIPOLAR

  • 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:

    3 mm

LT8641ARUDCM#PBF Frequently Asked Questions (FAQs)

  • The maximum input voltage that the LT8641 can handle is 42V, but it's recommended to keep it below 36V for optimal performance and reliability.
  • To minimize EMI, keep the input and output capacitors close to the IC, use a solid ground plane, and keep the high-frequency switching nodes (e.g., LX and SW) away from sensitive analog nodes. Also, use a shielded inductor and orient it to minimize radiation.
  • The recommended PCB layout for the LT8641 involves placing the input capacitors (CIN) close to the VIN pin, the output capacitors (COUT) close to the VOUT pin, and the inductor (L) close to the LX pin. Keep the high-current paths short and wide, and use a solid ground plane to reduce noise and EMI.
  • To select the right inductor for the LT8641, consider the following factors: inductance value, saturation current, DC resistance, and physical size. A good starting point is to use an inductor with an inductance value between 1.5μH and 3.3μH, and a saturation current rating above the peak current of the converter.
  • The maximum output current that the LT8641 can deliver depends on the input voltage, output voltage, and inductor selection. However, the typical output current rating is up to 4A, and the peak current rating is up to 6A.

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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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