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LTC3876IUHF#PBF - Analog Devices

Description: - Controller, DDR Voltage Regulator IC 2 Output 38-QFN (5x7)

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LTC3876IUHF#PBF - Analog Devices - PCB symbol
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PCB Footprints
LTC3876IUHF#PBF - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - 38-Lead Plastic QFN (5mm × 7mm)
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3D Models
LTC3876IUHF#PBF - Analog Devices - 3D model - Quad Flat No-Lead - 38-Lead Plastic QFN (5mm × 7mm)
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LTC3876IUHF#PBF Details

  • Manufacturer Part Number:

    LTC3876IUHF#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    7 X 5 MM, LEAD FREE, PLASTIC, M0-220WHKD, 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:

    OPERATES IN ADJUSTABLE MODE FROM 1 TO 2.5V

  • Analog IC - Other Type:

    DUAL SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    CONTROLLED ON TIME

  • Input Voltage-Max:

    38 V

  • Input Voltage-Min:

    4.5 V

  • Input Voltage-Nom:

    15 V

  • JESD-30 Code:

    R-PQCC-N38

  • JESD-609 Code:

    e3

  • Length:

    7 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    2

  • Number of Terminals:

    38

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • 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

  • Seated Height-Max:

    0.8 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    PHASE-SHIFT

  • Switching Frequency-Max:

    550 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

LTC3876IUHF#PBF Frequently Asked Questions (FAQs)

  • A good PCB layout for the LTC3876IUHF involves keeping the high-frequency switching nodes (e.g., SW, VIN, and VOUT) away from sensitive analog nodes, using a solid ground plane, and minimizing trace lengths and widths to reduce parasitic inductance and capacitance. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
  • When selecting an inductor for the LTC3876IUHF, consider the inductor's saturation current, DC resistance, and core material. 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 10% of the output impedance. Additionally, choose an inductor with a low core loss and a high self-resonant frequency to minimize energy losses and ensure stability.
  • The LTC3876IUHF is rated for operation from -40°C to 125°C ambient temperature range. However, the device's performance and reliability may degrade at extreme temperatures. It's essential to ensure proper thermal management and heat sinking to maintain a safe operating temperature.
  • To troubleshoot oscillations or instability issues with the LTC3876IUHF, start by checking the PCB layout and ensuring that the high-frequency switching nodes are properly decoupled and shielded. Verify that the input and output capacitors are properly selected and placed. Also, check the inductor selection and ensure that it meets the recommended specifications. If the issue persists, try reducing the switching frequency or increasing the output capacitance to improve stability.
  • The LTC3876IUHF is a commercial-grade device, and its reliability and performance may not meet the stringent requirements of high-reliability or aerospace applications. However, Analog Devices offers a range of radiation-hardened and high-reliability devices that may be suitable for such applications. It's essential to consult with Analog Devices' application engineers and review the device's datasheet and reliability reports before selecting a device for a high-reliability or aerospace application.

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LTC3876IUHF#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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