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LT8705MPFE#PBF - Analog Devices

Description: 80V VIN and VOUT Synchronous 4-Switch Buck-Boost DC/DC Controller

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LT8705MPFE#PBF - Analog Devices - PCB symbol
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PCB Footprints
LT8705MPFE#PBF - Analog Devices PCB footprint - Other - Other - FE Package Package Variation: FE38 (31) 38-Lead Plastic TSSOP (4.4mm) (Reference LTC DWG # 05-08-1865 Re
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LT8705MPFE#PBF - Analog Devices - 3D model - Other - FE Package Package Variation: FE38 (31) 38-Lead Plastic TSSOP (4.4mm) (Reference LTC DWG # 05-08-1865 Re
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LT8705MPFE#PBF Details

  • Manufacturer Part Number:

    LT8705MPFE#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    4.40 MM WIDTH, LEAD FREE, PLASTIC, TSSOP-38/31

  • Pin Count:

    38

  • Manufacturer Package Code:

    05-08-1865

  • 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 1.3 VOLT TO 80 VOLT

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    80 V

  • Input Voltage-Min:

    2.8 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    R-PDSO-G31

  • JESD-609 Code:

    e3

  • Length:

    9.7 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    31

  • Operating Temperature-Max:

    150 °C

  • Operating Temperature-Min:

    -55 °C

  • Output Voltage-Max:

    80 V

  • Output Voltage-Min:

    1.3 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HTSSOP

  • Package Equivalence Code:

    TSSOP31/38,.25,20

  • 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:

    400 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    MILITARY

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    DUAL

  • Width:

    4.4 mm

LT8705MPFE#PBF Frequently Asked Questions (FAQs)

  • A good PCB layout is crucial for the LT8705MPFE's performance. Analog Devices recommends a 4-layer board with a solid ground plane, and to keep the input and output capacitors close to the IC. Additionally, the feedback resistors should be placed close to the FB pin, and the switching node should be kept away from sensitive nodes.
  • The input capacitor should be chosen based on the input voltage ripple and ESR requirements. A low-ESR ceramic capacitor with a value of 10uF to 22uF is recommended. The output capacitor should be chosen based on the output voltage ripple and ESR requirements. A low-ESR ceramic capacitor with a value of 22uF to 47uF is recommended.
  • The LT8705MPFE is rated for operation from -40°C to 125°C. However, the maximum ambient temperature range depends on the specific application and the thermal design of the system.
  • To ensure stability, the LT8705MPFE requires a compensation network. The datasheet provides a recommended compensation network, and the values can be adjusted based on the specific application. Additionally, the input and output capacitors should be chosen to ensure that the converter is stable.
  • The LT8705MPFE is capable of delivering up to 5A of output current. However, the maximum output current depends on the input voltage, output voltage, and thermal design of the system.

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LT8705MPFE#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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