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LTC3859ALEFE#PBF - Analog Devices

Description: Triple Output, Buck/Buck/Boost Synchronous Controller with 28?A Burst Mode IQ

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LTC3859ALEFE#PBF - Analog Devices - PCB symbol
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PCB Footprints
LTC3859ALEFE#PBF - Analog Devices PCB footprint - Small Outline Packages - Small Outline Packages - TSSOP W/ THERMAL PAD_2023-5
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LTC3859ALEFE#PBF - Analog Devices - 3D model - Small Outline Packages - TSSOP W/ THERMAL PAD_2023-5
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LTC3859ALEFE#PBF Details

  • Manufacturer Part Number:

    LTC3859ALEFE#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    TSSOP-38

  • Pin Count:

    38

  • Manufacturer Package Code:

    05-08-1772

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • Additional Feature:

    OUTPUT VOLTAGE RANGE FROM 0.8 VOLT TO 24 VOLT

  • 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-PDSO-G38

  • JESD-609 Code:

    e3

  • Length:

    9.7 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    38

  • Operating Temperature-Max:

    85 °C

  • Output Voltage-Max:

    24 V

  • Output Voltage-Min:

    0.8 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HTSSOP

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    1.2 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    900 kHz

  • Technology:

    CMOS

  • Temperature Grade:

    OTHER

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    4.4 mm

LTC3859ALEFE#PBF Frequently Asked Questions (FAQs)

  • A good PCB layout for the LTC3859ALEFE#PBF involves keeping the high-current paths short and wide, using a solid ground plane, and placing the input and output capacitors close to the device. Additionally, it's recommended to use a separate analog and digital ground plane to minimize noise coupling.
  • The selection of input and output capacitors for the LTC3859ALEFE#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 at least 10uF, and the output capacitor should be at least 22uF. The capacitor values can be adjusted based on the output voltage and current requirements.
  • The maximum ambient temperature range for the LTC3859ALEFE#PBF is -40°C to 125°C. However, the device can operate up to 150°C with derating. It's essential to ensure that the device is operated within the recommended temperature range to ensure reliability and performance.
  • The LTC3859ALEFE#PBF can be programmed for a specific output voltage using the FB pin. The output voltage is set by connecting a resistive divider from the output voltage to the FB pin, with the center tap of the divider connected to the FB pin. The resistive divider values can be calculated using the formula provided in the datasheet.
  • The maximum output current capability of the LTC3859ALEFE#PBF is 9A. However, the output current capability can be limited by the input voltage, output voltage, and thermal considerations. It's essential to ensure that the device is operated within the recommended output current range to avoid overheating and reliability issues.

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LTC3859ALEFE#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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