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LTC3520IUF#PBF - Analog Devices

Description: Switching Voltage Regulators Synchronous 600mA Buck-Boost and 400mA Buck Converters in 4mm x 4mm QFN

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LTC3520IUF#PBF - Analog Devices - PCB symbol
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PCB Footprints
LTC3520IUF#PBF - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - UF (24-Lead QFN)
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LTC3520IUF#PBF - Analog Devices - 3D model - Quad Flat No-Lead - UF (24-Lead QFN)
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LTC3520IUF#PBF Details

  • Manufacturer Part Number:

    LTC3520IUF#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    4 X 4 MM, LEAD FREE, PLASTIC, QFN-24

  • Pin Count:

    24

  • Manufacturer Package Code:

    05-08-1697

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • Additional Feature:

    IT ALSO OPRATES IN VOLTAGE MODE; ALSO ADJUSTABLE OUTPUT FROM 2.2V TO 5.25V

  • Analog IC - Other Type:

    DUAL SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    5.5 V

  • Input Voltage-Min:

    2.2 V

  • Input Voltage-Nom:

    3.6 V

  • JESD-30 Code:

    S-PQCC-N24

  • JESD-609 Code:

    e3

  • Length:

    4 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    24

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    1 A

  • Output Voltage-Max:

    5.25 V

  • Output Voltage-Min:

    2.2 V

  • Output Voltage-Nom:

    3.3 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Shape:

    SQUARE

  • 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:

    BUCK

  • Switching Frequency-Max:

    1200 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:

    4 mm

LTC3520IUF#PBF Frequently Asked Questions (FAQs)

  • A good PCB layout for the LTC3520IUF involves keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing the length of the traces between the IC and the capacitors. A 4-layer PCB with a dedicated power plane is recommended. The datasheet provides a recommended layout diagram, but it's also a good idea to consult with experienced PCB designers and perform thermal and signal integrity simulations.
  • Optimizing the inductor selection for the LTC3520IUF involves considering factors such as inductance value, DC resistance, and core material. A good starting point is to use the inductor selection guide provided in the datasheet, which recommends inductors with a value between 1.5uH and 3.3uH. It's also important to consider the inductor's saturation current, which should be higher than the peak current of the converter. Additionally, using a shielded inductor can help reduce EMI.
  • The maximum ambient temperature for the LTC3520IUF is 85°C, but the device can operate up to 125°C with derating. It's important to consider the thermal design of the system, including the PCB layout, thermal vias, and heat sinks, to ensure that the device operates within its specified temperature range.
  • Troubleshooting issues with the LTC3520IUF involves using a combination of analytical and experimental techniques. Start by reviewing the datasheet and application notes to ensure that the device is being used within its specified operating conditions. Use oscilloscopes and other measurement tools to observe the waveforms and voltage levels at different nodes in the circuit. Check for issues such as incorrect component values, poor PCB layout, or inadequate decoupling. It's also a good idea to consult with experienced engineers and seek support from Analog Devices' technical support team.
  • Yes, the LTC3520IUF is suitable for use in high-reliability and automotive applications. The device is built with high-reliability materials and manufacturing processes, and it has been tested to meet the requirements of various industry standards, including AEC-Q100. However, it's still important to perform thorough testing and validation to ensure that the device meets the specific requirements of the application.

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LTC3520IUF#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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