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LT3741IUF-1#PBF - Analog Devices

Description: LINEAR TECHNOLOGY - LT3741IUF-1#PBF - DC/DC Controller, Constant Current, 6V to 36V, 1 Output, Synchronous Buck, 1MHz, QFN-20

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LT3741IUF-1#PBF - Analog Devices - PCB symbol
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PCB Footprints
LT3741IUF-1#PBF - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - UF Package 20-Lead Plastic QFN (4mm × 4mm) (Reference LTC DWG # 05-08-1710 Rev A)
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3D Models
LT3741IUF-1#PBF - Analog Devices - 3D model - Quad Flat No-Lead - UF Package 20-Lead Plastic QFN (4mm × 4mm) (Reference LTC DWG # 05-08-1710 Rev A)
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LT3741IUF-1#PBF Details

  • Manufacturer Part Number:

    LT3741IUF-1#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, MO-220WGGD-1, QFN-20

  • Pin Count:

    20

  • Manufacturer Package Code:

    05-08-1710

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    8.5

  • Additional Feature:

    OUTPUT VOLTAGE RANGE 0 VOLT TO 34 VOLT

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    36 V

  • Input Voltage-Min:

    6 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    S-PQCC-N20

  • JESD-609 Code:

    e3

  • Length:

    4 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Shape:

    SQUARE

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Seated Height-Max:

    0.8 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    1070 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

  • Width:

    4 mm

LT3741IUF-1#PBF Frequently Asked Questions (FAQs)

  • A good PCB layout for the LT3741IUF-1 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 analog and digital ground plane to reduce noise coupling.
  • To ensure the stability of the output voltage, it's essential to choose the correct output capacitor value and type. A minimum capacitance of 10uF is recommended, and the capacitor should have a low ESR (Equivalent Series Resistance) to minimize voltage ripple. Additionally, the output voltage should be decoupled with a 1uF ceramic capacitor to reduce noise and oscillations.
  • The maximum input voltage that the LT3741IUF-1 can handle is 28V. Exceeding this voltage can cause damage to the device. It's essential to ensure that the input voltage is within the recommended range to ensure reliable operation and prevent damage.
  • The output voltage of the LT3741IUF-1 can be programmed using the VFB pin. The output voltage is set by the ratio of the resistors R1 and R2, which are connected between the VFB pin and the output voltage. The output voltage can be calculated using the formula: VOUT = 0.8V x (1 + R2/R1).
  • The thermal shutdown temperature of the LT3741IUF-1 is 150°C. If the device temperature exceeds this value, it will shut down to prevent damage. The device will automatically restart when the temperature drops below 140°C.

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LT3741IUF-1#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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