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LT8640AJUDCM#PBF - Analog Devices

Description: 42V, 5A/8A Peak Synchronous Step-Down Silent Switcher with 2.5μA Quiescent Current

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PCB Footprints
LT8640AJUDCM#PBF - Analog Devices PCB footprint - Other - Other - UDCM  Package 20(18)-Lead Plastic Side Wettable QFN (3mm × 4mm)
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3D Models
LT8640AJUDCM#PBF - Analog Devices  - 3D model - Other - UDCM  Package 20(18)-Lead Plastic Side Wettable QFN (3mm × 4mm)
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LT8640AJUDCM#PBF Details

  • Manufacturer Part Number:

    LT8640AJUDCM#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    QFN-20/18 PIN

  • Pin Count:

    18

  • Manufacturer Package Code:

    05-08-7030

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • 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:

    42 V

  • Input Voltage-Min:

    3.4 V

  • Input Voltage-Nom:

    6 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:

    8 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Equivalence Code:

    LCC18/20,.12X.16,20

  • Package Shape:

    RECTANGULAR

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    0.8 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    2100 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

LT8640AJUDCM#PBF Frequently Asked Questions (FAQs)

  • The maximum input voltage that can be applied to the LT8640AJUDCM#PBF is 42V, but it's recommended to keep it below 40V for reliable operation.
  • To ensure the stability of the output voltage, it's essential to follow the recommended layout and component selection guidelines provided in the datasheet, including the use of a suitable output capacitor and proper PCB layout.
  • The maximum output current that the LT8640AJUDCM#PBF can deliver is 2A, but it's recommended to derate the output current based on the ambient temperature and other operating conditions.
  • The output voltage of the LT8640AJUDCM#PBF can be programmed using an external resistor divider network connected to the FB pin. The datasheet provides a formula to calculate the required resistor values for a specific output voltage.
  • The EN (enable) pin is used to turn the regulator on or off. When the EN pin is pulled high, the regulator is enabled, and when it's pulled low, the regulator is disabled and enters a low-power shutdown mode.

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LT8640AJUDCM#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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