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LT8638SJV#WPBF - Analog Devices

Description: Input 2.8V to 42V 10A/12A Peak Synchronous Step-Down Silent Switcher 2, 200kHz to 3MHz, -40°C to 150°C, Up to 96% Efficiency at 1MHz, 12VIN to 5VOUT

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PCB Footprints
LT8638SJV#WPBF - Analog Devices PCB footprint - Other - Other - LQFN Package 28-Lead (5mm × 4mm × 0.94mm) (Reference LTC DWG # 05-08-1675 Rev Ø)
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3D Models
LT8638SJV#WPBF - Analog Devices  - 3D model - Other - LQFN Package 28-Lead (5mm × 4mm × 0.94mm) (Reference LTC DWG # 05-08-1675 Rev Ø)
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LT8638SJV#WPBF Details

  • Manufacturer Part Number:

    LT8638SJV#WPBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    LQFN-28

  • Pin Count:

    28

  • Manufacturer Package Code:

    05-08-1675

  • Country Of Origin:

    Philippines, South Korea

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Analog IC - Other Type:

    SWITCHING REGULATOR

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    42 V

  • Input Voltage-Min:

    2.8 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    R-XQCC-N28

  • JESD-609 Code:

    e4

  • Length:

    4 mm

  • Moisture Sensitivity Level:

    3

  • Number of Functions:

    1

  • Number of Terminals:

    28

  • Operating Temperature-Max:

    150 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    12 A

  • Output Voltage-Max:

    25 V

  • Output Voltage-Min:

    3.3 V

  • Package Body Material:

    UNSPECIFIED

  • Package Code:

    HVQCCN

  • Package Equivalence Code:

    LCC28,.12X16,20

  • Package Shape:

    RECTANGULAR

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Screening Level:

    AEC-Q100

  • Seated Height-Max:

    1.03 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    3000 kHz

  • Technology:

    BIPOLAR

  • Terminal Finish:

    Gold (Au) - with Nickel (Ni) barrier

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    3 mm

LT8638SJV#WPBF Frequently Asked Questions (FAQs)

  • The maximum input voltage that can be applied to the LT8638SJV is 42V, but it's recommended to keep it below 40V for reliable operation.
  • 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., SW and VIN) away from sensitive analog nodes. Also, use a shielded inductor and orient it to minimize radiation.
  • A low-ESR ceramic capacitor (e.g., X5R or X7R) with a value between 10uF to 22uF is recommended for the output capacitor. This helps to reduce output voltage ripple and improve transient response.
  • The output voltage of the LT8638SJV can be adjusted by changing the resistor divider ratio between the FB pin and the output voltage. Use the formula: VOUT = 0.8V x (R1 + R2) / R2, where R1 and R2 are the resistors in the divider network.
  • The maximum ambient temperature range for the LT8638SJV is -40°C to 125°C. However, the junction temperature (TJ) should be kept below 150°C for reliable operation.

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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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