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LT3957AIUHE#TRPBF - Analog Devices

Description: Boost, Flyback, SEPIC and Inverting Converter with 5A, 40V Switch

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LT3957AIUHE#TRPBF - Analog Devices - PCB symbol
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PCB Footprints
LT3957AIUHE#TRPBF - Analog Devices PCB footprint - Other - Other - UHE Package Variation: UHE36(28)MA 36(28)-Lead Plastic QFN (5mm × 6mm)_2025-1.1
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3D Models
LT3957AIUHE#TRPBF - Analog Devices - 3D model - Other - UHE Package Variation: UHE36(28)MA 36(28)-Lead Plastic QFN (5mm × 6mm)_2025-1.1
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LT3957AIUHE#TRPBF Details

  • Manufacturer Part Number:

    LT3957AIUHE#TRPBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    5 X 6 MM, LEAD FREE, PLASTIC, QFN-38/28

  • Pin Count:

    28

  • Manufacturer Package Code:

    05-08-1836

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • Analog IC - Other Type:

    SWITCHING REGULATOR

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    40 V

  • Input Voltage-Min:

    3 V

  • Input Voltage-Nom:

    24 V

  • JESD-30 Code:

    R-PQCC-N38

  • JESD-609 Code:

    e3

  • Length:

    6 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    38

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    6.8 A

  • Output Voltage-Nom:

    24 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Equivalence Code:

    LCC28/36,.19X.23,20

  • 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:

    BOOST

  • Switching Frequency-Max:

    1200 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

LT3957AIUHE#TRPBF Frequently Asked Questions (FAQs)

  • A good PCB layout for optimal thermal performance involves placing the LT3957AIUHE#TRPBF near a thermal pad or a heat sink, and ensuring that the thermal pad is connected to a large copper area on the PCB to dissipate heat efficiently. Additionally, keeping the PCB layers thin and using thermal vias can also help to improve thermal performance.
  • To select the right inductor for your design, consider the inductor's saturation current, DC resistance, and core material. The inductor's saturation current should be higher than the peak current of the converter, and the DC resistance should be low to minimize losses. The core material should be suitable for the operating frequency and temperature range of the converter. Consult the datasheet and inductor manufacturer's recommendations for guidance.
  • The maximum ambient temperature that the LT3957AIUHE#TRPBF can operate in is 125°C. However, the device's junction temperature should not exceed 150°C to ensure reliable operation. The ambient temperature and junction temperature are related, and the device's thermal performance should be considered when designing the system.
  • To troubleshoot issues with the LT3957AIUHE#TRPBF, start by checking the PCB layout and component placement to ensure that they meet the recommended guidelines. Verify that the input and output capacitors are properly selected and placed. Use an oscilloscope to measure the voltage and current waveforms at the input and output of the converter, and check for signs of oscillation or instability. Consult the datasheet and application notes for guidance on troubleshooting and debugging techniques.
  • The LT3957AIUHE#TRPBF is a commercial-grade device, but it can be used in high-reliability or aerospace applications with proper qualification and testing. Consult with Analog Devices Inc. for guidance on the device's reliability and qualification, and ensure that the device meets the specific requirements of the application.

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LT3957AIUHE#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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