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LT8705AEUHF#TRPBF - Analog Devices

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

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LT8705AEUHF#TRPBF - 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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LT8705AEUHF#TRPBF - Analog Devices  - 3D model - Quad Flat No-Lead - UHF Package 38-Lead Plastic QFN (5mm × 7mm)_2025-1
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LT8705AEUHF#TRPBF Details

  • Manufacturer Part Number:

    LT8705AEUHF#TRPBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    QFN-38

  • Pin Count:

    38

  • Manufacturer Package Code:

    05-08-1701

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Additional Feature:

    SEATED HT-CALCULATED

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    VOLTAGE-MODE

  • Control Technique:

    BURST MODE

  • Input Voltage-Max:

    80 V

  • Input Voltage-Min:

    2.8 V

  • Input Voltage-Nom:

    12 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:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Voltage-Max:

    80 V

  • Output Voltage-Min:

    1.3 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Equivalence Code:

    LCC38,.2X.28,20

  • 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:

    BUCK-BOOST

  • Switching Frequency-Max:

    400 kHz

  • Technology:

    BIPOLAR

  • 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:

    5 mm

LT8705AEUHF#TRPBF Frequently Asked Questions (FAQs)

  • A good PCB layout is crucial for the LT8705AEUHF'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. Also, keep the high-frequency switching nodes away from sensitive analog nodes.
  • The input capacitor should be a low-ESR ceramic capacitor with a value between 10uF to 22uF. The output capacitor should be a low-ESR ceramic or polymer capacitor with a value between 22uF to 47uF. The capacitor selection also depends on the output voltage and current requirements.
  • The LT8705AEUHF is rated for operation up to 125°C ambient temperature. However, the maximum junction temperature is 150°C, and the device should be derated for reliable operation above 85°C ambient temperature.
  • To ensure stability, follow the recommended component values and PCB layout. Also, make sure the input and output capacitors are properly decoupled, and the feedback network is properly compensated. Additionally, ensure that the device is operated within its recommended operating conditions.
  • The recommended input voltage range for the LT8705AEUHF is 2.9V to 15V. Operating the device outside this range may affect its performance and reliability.

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LT8705AEUHF#TRPBF 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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