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LTC3838EUHF#PBF - Analog Devices

Description: Buck Regulator Positive Output Step-Down DC-DC Controller IC 38-QFN (5x7)

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LTC3838EUHF#PBF - Analog Devices - PCB symbol
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LTC3838EUHF#PBF - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - UHF Package 38-Lead Plastic QFN (5mm × 7mm)_2025-1
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LTC3838EUHF#PBF - Analog Devices - 3D model - Quad Flat No-Lead - UHF Package 38-Lead Plastic QFN (5mm × 7mm)_2025-1
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LTC3838EUHF#PBF Details

  • Manufacturer Part Number:

    LTC3838EUHF#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:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Additional Feature:

    OPERATE IN ADJUSTABLE MODE FROM 0.6 TO 5.5V

  • 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:

    1

  • Number of Terminals:

    38

  • Operating Temperature-Max:

    85 °C

  • Output Voltage-Max:

    5.5 V

  • Output Voltage-Min:

    0.6 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

  • Seated Height-Max:

    0.8 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    PHASE-SHIFT

  • Switching Frequency-Max:

    2000 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

LTC3838EUHF#PBF Frequently Asked Questions (FAQs)

  • A good PCB layout for the LTC3838EUHF involves keeping the high-current paths short and wide, using multiple vias to connect the GND pins to the ground plane, and placing the input and output capacitors close to the device. A 4-layer board with a solid ground plane is recommended. Refer to the application note AN140 for more details.
  • The input capacitor should have a low ESR and be rated for the maximum input voltage. A 10uF to 22uF ceramic capacitor is a good choice. The output capacitor should have a low ESR and be rated for the maximum output voltage. A 22uF to 47uF ceramic capacitor is a good choice. Make sure to follow the capacitor selection guidelines in the datasheet.
  • The maximum ambient temperature range for the LTC3838EUHF is -40°C to 125°C. However, the device can operate up to 150°C with derating. Refer to the datasheet for more information on thermal derating.
  • The switching frequency of the LTC3838EUHF can be programmed using the RT pin. A resistor connected from the RT pin to GND sets the switching frequency. Refer to the datasheet for the resistor value vs. frequency curve.
  • The maximum output current capability of the LTC3838EUHF is 3.5A. However, the device can deliver higher currents for short durations. Refer to the datasheet for more information on output current capability and thermal derating.

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LTC3838EUHF#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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