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LTC3126EFE#PBF - Analog Devices

Description: Switching Voltage Regulators 42V, 2.5A Synchronous Step-Down Regulator with Lossless PowerPath

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LTC3126EFE#PBF - Analog Devices - PCB symbol
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LTC3126EFE#PBF - Analog Devices PCB footprint - Small Outline Packages - Small Outline Packages - 28-Lead Plastic TSSOP (4.4mm)
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LTC3126EFE#PBF - Analog Devices - 3D model - Small Outline Packages - 28-Lead Plastic TSSOP (4.4mm)
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LTC3126EFE#PBF Details

  • Manufacturer Part Number:

    LTC3126EFE#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    TSSOP-28

  • Pin Count:

    28

  • Manufacturer Package Code:

    05-08-1663 (EB)

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Analog IC - Other Type:

    SWITCHING REGULATOR

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    42 V

  • Input Voltage-Min:

    2.4 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    R-PDSO-G28

  • JESD-609 Code:

    e3

  • Length:

    9.7 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    28

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    2.5 A

  • Output Voltage-Max:

    42 V

  • Output Voltage-Min:

    0.818 V

  • Output Voltage-Nom:

    5 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    TSSOP

  • Package Equivalence Code:

    TSSOP28,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

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

  • Seated Height-Max:

    1.247 mm

  • Supply Voltage-Nom (Vsup):

    4.22 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    2200 kHz

  • Technology:

    CMOS

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

  • Width:

    4.4 mm

LTC3126EFE#PBF Frequently Asked Questions (FAQs)

  • The maximum input voltage that can be applied to the VIN pin is 40V, but it's recommended to keep it below 36V for reliable operation.
  • To optimize inductor selection, consider the inductor's saturation current, DC resistance, and core material. A good starting point is to choose an inductor with a saturation current at least 1.5 times the peak current, and a DC resistance less than 100mΩ.
  • To minimize noise and EMI, keep the input and output capacitors close to the IC, use a solid ground plane, and keep the high-frequency switching nodes (e.g., LX and SW) away from sensitive analog nodes. Also, use a shielded inductor and orient it to minimize radiation.
  • The EN pin can be configured to control startup and shutdown behavior by connecting it to a logic signal, a resistor divider, or a capacitor. For example, connecting EN to VIN through a resistor divider sets the undervoltage lockout (UVLO) threshold, while connecting it to GND through a capacitor sets the startup delay.
  • To ensure reliable operation, keep the junction temperature (TJ) below 125°C. Use a thermal pad or heat sink to dissipate heat, and ensure good airflow around the device. Also, consider using a thermally enhanced package or a heat spreader to reduce thermal resistance.

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LTC3126EFE#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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