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LT3957AIUHE#PBF - Analog Devices

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

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PCB Footprints
LT3957AIUHE#PBF - Analog Devices PCB footprint - Other - Other - UHE Package Variation: UHE36(28)MA 36(28)-Lead Plastic QFN (5mm × 6mm) (Reference LTC DWG # 05-08-1836 R
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3D Models
LT3957AIUHE#PBF - Analog Devices  - 3D model - Other - UHE Package Variation: UHE36(28)MA 36(28)-Lead Plastic QFN (5mm × 6mm) (Reference LTC DWG # 05-08-1836 R
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LT3957AIUHE#PBF Details

  • Manufacturer Part Number:

    LT3957AIUHE#PBF

  • 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#PBF Frequently Asked Questions (FAQs)

  • A 2-layer or 4-layer PCB with a solid ground plane and a thermal relief pattern around the IC is recommended. This helps to dissipate heat efficiently and reduce thermal resistance.
  • Ensure that the input voltage rises and falls monotonically, and add a soft-start circuit to limit the inrush current during start-up. Also, add a voltage supervisor to ensure the converter shuts down cleanly during power-down.
  • The maximum allowed capacitance on the output of the converter is 100uF. Exceeding this value may cause instability or oscillations in the converter.
  • Use the datasheet's recommended compensation network values as a starting point, and then adjust the values based on the specific application's requirements and load characteristics.
  • Use a pi-filter configuration with a common-mode choke and X-capacitors to minimize EMI. Ensure the filter is designed to attenuate noise in the frequency range of interest.

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LT3957AIUHE#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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