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LTC3859IUHF#PBF - Analog Devices

Description: Low IQ, Triple Output, Buck/Buck/Boost Synchronous Controller

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LTC3859IUHF#PBF - Analog Devices - PCB symbol
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PCB Footprints
LTC3859IUHF#PBF - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - UHF (38-Lead QFN)
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3D Models
LTC3859IUHF#PBF - Analog Devices - 3D model - Quad Flat No-Lead - UHF (38-Lead QFN)
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LTC3859IUHF#PBF Details

  • Manufacturer Part Number:

    LTC3859IUHF#PBF

  • 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

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • Additional Feature:

    ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 24V

  • Analog IC - Other Type:

    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:

    125 °C

  • Operating Temperature-Min:

    -40 °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

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    0.8 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    PUSH-PULL

  • Switching Frequency-Max:

    900 kHz

  • Technology:

    CMOS

  • Temperature Grade:

    AUTOMOTIVE

  • 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

LTC3859IUHF#PBF Frequently Asked Questions (FAQs)

  • The recommended PCB layout for the LTC3859IUHF#PBF 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. A 4-layer PCB with a dedicated power plane and a dedicated ground plane is also recommended.
  • The selection of input and output capacitors for the LTC3859IUHF#PBF depends on the specific application requirements. In general, low-ESR capacitors with a high ripple current rating are recommended. The input capacitor should be able to handle the input voltage ripple, while the output capacitor should be able to handle the output voltage ripple and provide sufficient decoupling.
  • The maximum ambient temperature that the LTC3859IUHF#PBF can operate in is 125°C. However, the device's performance and reliability may degrade at high temperatures, so it's recommended to operate the device at a lower temperature if possible.
  • Yes, the LTC3859IUHF#PBF is qualified for use in high-reliability and automotive applications. It meets the requirements of the AEC-Q100 standard for automotive-grade devices and is also suitable for use in other high-reliability applications such as industrial, medical, and aerospace.
  • To troubleshoot issues with the LTC3859IUHF#PBF, start by checking the input voltage, output voltage, and current sense resistor values. Verify that the device is properly configured and that the input and output capacitors are properly selected. Use an oscilloscope to check for oscillations or other anomalies on the output voltage. Consult the datasheet and application notes for more detailed troubleshooting guidance.

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LTC3859IUHF#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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