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LT8708HLWE#PBF - Analog Devices

Description: 80V Synchronous 4-Switch Buck-Boost DC/DC Controller with Bidirectional Capability

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LT8708HLWE#PBF - Analog Devices - PCB symbol
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LT8708HLWE#PBF - Analog Devices PCB footprint - Quad Flat Packages - Quad Flat Packages - LTC6813ILWE-1#3ZZPBF
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LT8708HLWE#PBF Details

  • Manufacturer Part Number:

    LT8708HLWE#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    LQFP-64

  • Pin Count:

    64

  • Manufacturer Package Code:

    05-08-1982

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Input Voltage-Max:

    80 V

  • Input Voltage-Min:

    2.8 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    S-PQFP-G64

  • JESD-609 Code:

    e3

  • Length:

    10 mm

  • Moisture Sensitivity Level:

    3

  • Number of Functions:

    1

  • Number of Terminals:

    64

  • Operating Temperature-Max:

    150 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Voltage-Max:

    80 V

  • Output Voltage-Min:

    1.3 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HLFQFP

  • Package Equivalence Code:

    HQFP64,.47SQ,20

  • Package Shape:

    SQUARE

  • Package Style:

    FLATPACK, HEAT SINK/SLUG, LOW PROFILE, FINE PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    1.6 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    400 kHz

  • Technology:

    BIPOLAR

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    10 mm

LT8708HLWE#PBF Frequently Asked Questions (FAQs)

  • A good PCB layout is crucial for the LT8708's performance. Analog Devices recommends a 4-layer board with a solid ground plane, and to keep the input and output capacitors close to the IC. Additionally, the switching node (SW pin) should be kept away from sensitive nodes to minimize noise coupling.
  • The inductor selection depends on the output voltage, output current, and switching frequency. A good starting point is to use the inductor selection guide provided by Analog Devices, which takes into account the LT8708's specific requirements. Additionally, consider factors such as inductor core material, size, and DC resistance.
  • The LT8708 is rated for operation up to 125°C ambient temperature, but the maximum junction temperature (TJ) should not exceed 150°C. It's essential to ensure proper thermal management, such as using a heat sink or thermal interface material, to maintain a safe operating temperature.
  • Yes, the LT8708 is qualified for automotive and high-reliability applications. It meets the AEC-Q100 standard for automotive grade and is also suitable for industrial and medical applications. However, it's essential to follow the recommended design and manufacturing guidelines to ensure the required level of reliability.
  • To troubleshoot issues with the LT8708, start by checking the PCB layout, component selection, and soldering quality. Use an oscilloscope to measure the switching node, output voltage, and input voltage. Check for signs of oscillation, ringing, or excessive noise. Consult the datasheet and application notes for guidance on troubleshooting and debugging techniques.

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LT8708HLWE#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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