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LTC3859AEUHF#TRPBF - Analog Devices

Description: Low IQ, Triple Output, Buck/Buck/Boost Synchronous Controller with Improved Burst Mode Operation

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LTC3859AEUHF#TRPBF - Analog Devices - PCB symbol
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PCB Footprints
LTC3859AEUHF#TRPBF - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - UHF Package 38-Lead Plastic QFN (5mm × 7mm) (Reference LTC DWG # 05-08-1701 Rev C)
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3D Models
LTC3859AEUHF#TRPBF - Analog Devices - 3D model - Quad Flat No-Lead - UHF Package 38-Lead Plastic QFN (5mm × 7mm) (Reference LTC DWG # 05-08-1701 Rev C)
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LTC3859AEUHF#TRPBF Details

  • Manufacturer Part Number:

    LTC3859AEUHF#TRPBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    5 X 7 MM, LEAD FREE, PLASTIC, MO-220WHKD, QFN-38

  • Pin Count:

    38

  • Manufacturer Package Code:

    05-08-1701

  • Similar Group:

    SM00100310011214

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Additional Feature:

    OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 24V

  • Analog IC - Other Type:

    DUAL SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    38 V

  • Input Voltage-Min:

    4.5 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    R-PQCC-N38

  • JESD-609 Code:

    e3

  • Length:

    7 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    38

  • Operating Temperature-Max:

    85 °C

  • Output Voltage-Max:

    24 V

  • Output Voltage-Min:

    0.8 V

  • Output Voltage-Nom:

    5.4 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Shape:

    RECTANGULAR

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Packing Method:

    TR

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    0.8 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    PHASE-SHIFT

  • Switching Frequency-Max:

    835 kHz

  • Technology:

    CMOS

  • Temperature Grade:

    OTHER

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    5 mm

LTC3859AEUHF#TRPBF Frequently Asked Questions (FAQs)

  • A good PCB layout for the LTC3859AEUHF involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the traces between the device and the capacitors. Additionally, it's recommended to use a separate power plane for the input voltage and to keep the switching node (SW pin) away from sensitive analog nodes.
  • When choosing an inductor for the LTC3859AEUHF, consider the inductor's saturation current, DC resistance, and self-resonant frequency. A good starting point is to choose an inductor with a saturation current rating of at least 1.5 times the maximum output current, and a DC resistance of less than 100mΩ. The self-resonant frequency should be at least 5 times the switching frequency.
  • The maximum ambient temperature range for the LTC3859AEUHF is -40°C to 125°C. However, the device's performance and reliability may be affected at extreme temperatures, so it's recommended to operate the device within a temperature range of -20°C to 85°C for optimal performance.
  • Yes, the LTC3859AEUHF is qualified for automotive and high-reliability applications. It meets the requirements of the AEC-Q100 standard for automotive applications, and it's also suitable for use in high-reliability industrial and medical applications.
  • To troubleshoot issues with the LTC3859AEUHF, start by checking the PCB layout and ensuring that it meets the recommended layout guidelines. Next, verify that the input and output capacitors are properly selected and placed. Check the inductor selection and ensure that it's suitable for the application. Finally, use an oscilloscope to measure the switching node and output voltage waveforms to identify any signs of oscillation or instability.

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LTC3859AEUHF#TRPBF 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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