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LTC3855EFE#PBF - Analog Devices

Description: n Dual, 180° Phased Controllers Reduce Required Input Capacitance and Power Supply Induced Noise n High Efficiency: Up to 95% n RSENSE or DCR Current Sensing n Programmable DCR Temperature Compensation n ±0.75% 0.6V Output Voltage Accuracy n Phase-Lockable Fixed Frequency 250kHz to 770kHz n True Remote Sensing Differential Amplifier n Dual N-Channel MOSFET Synchronous Drive n Wide VIN Range: 4.5V to 38V n VOUT Range: 0.6V to 12.5V without Differential Amplifier n VOUT Range: 0.6V to 3.3V with Dif

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LTC3855EFE#PBF - Analog Devices PCB footprint - Small Outline Packages - Small Outline Packages - FE Package 38-Lead Plastic TSSOP (4.4mm)
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LTC3855EFE#PBF - Analog Devices  - 3D model - Small Outline Packages - FE Package 38-Lead Plastic TSSOP (4.4mm)
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LTC3855EFE#PBF Details

  • Manufacturer Part Number:

    LTC3855EFE#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    LEAD FREE, PLASTIC, TSSOP-38

  • Pin Count:

    38

  • Manufacturer Package Code:

    05-08-1772

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • Analog IC - Other Type:

    DUAL SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PHASE-SHIFT CONTROL

  • Input Voltage-Max:

    38 V

  • Input Voltage-Min:

    4.5 V

  • Input Voltage-Nom:

    15 V

  • JESD-30 Code:

    R-PDSO-G38

  • JESD-609 Code:

    e3

  • Length:

    9.7 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    2

  • Number of Terminals:

    38

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Voltage-Max:

    12.5 V

  • Output Voltage-Min:

    0.6 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HTSSOP

  • Package Shape:

    RECTANGULAR

  • Package Style:

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

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.2 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    PHASE-SHIFT

  • Switching Frequency-Max:

    770 kHz

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    4.4 mm

LTC3855EFE#PBF Frequently Asked Questions (FAQs)

  • The maximum input voltage that can be applied to the LTC3855EFE is 28V, but it's recommended to keep it below 24V for reliable operation.
  • The compensation network can be optimized by following the guidelines in the datasheet and using the provided equations to calculate the values of the compensation components. Additionally, simulation tools such as LTspice can be used to simulate the circuit and optimize the compensation network.
  • The maximum output current that the LTC3855EFE can deliver is 5A, but it's recommended to keep it below 4A for reliable operation and to ensure that the junction temperature remains within the specified range.
  • To ensure that the LTC3855EFE operates within the specified junction temperature range, it's recommended to provide adequate heat sinking, keep the ambient temperature within the specified range, and avoid overheating the device.
  • The SYNC pin on the LTC3855EFE is used to synchronize the switching frequency of multiple devices in a multi-phase configuration. It can also be used to synchronize the switching frequency with an external clock signal.

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LTC3855EFE#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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