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LT3797ELXE#PBF - Analog Devices

Description: LED Lighting Drivers Triple Output LED Driver Controller

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LT3797ELXE#PBF Details

  • Manufacturer Part Number:

    LT3797ELXE#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    LQFP-48

  • Pin Count:

    48

  • Manufacturer Package Code:

    05-08-1927

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • Input Characteristics:

    STANDARD

  • Interface IC Type:

    LED DISPLAY DRIVER

  • JESD-30 Code:

    S-PQFP-G48

  • JESD-609 Code:

    e3

  • Length:

    7 mm

  • Moisture Sensitivity Level:

    3

  • Multiplexed Display Capability:

    NO

  • Number of Functions:

    1

  • Number of Segments:

    6

  • Number of Terminals:

    48

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Polarity:

    TRUE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HLFQFP

  • Package Equivalence Code:

    HQFP48,.28SQ,20

  • Package Shape:

    SQUARE

  • Package Style:

    FLATPACK, HEAT SINK/SLUG, LOW PROFILE, FINE PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    1.6 mm

  • Supply Voltage-Max:

    40 V

  • Supply Voltage-Min:

    2.5 V

  • Supply Voltage-Nom:

    24 V

  • Surface Mount:

    YES

  • Technology:

    BIPOLAR

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    7 mm

LT3797ELXE#PBF Frequently Asked Questions (FAQs)

  • A good PCB layout for the LT3797 involves keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing the length of the traces between the IC and the capacitors. A 4-layer PCB with a dedicated power plane and a dedicated ground plane is recommended.
  • The input capacitor should have a low ESR and be rated for the maximum input voltage. The output capacitor should have a low ESR and be rated for the maximum output voltage. X5R or X7R ceramic capacitors are recommended. The capacitance value should be chosen based on the desired output ripple and transient response.
  • The LT3797 is rated for operation from -40°C to 125°C. However, the maximum ambient temperature range may be limited by the specific application and the thermal design of the system.
  • To ensure stability, the LT3797 requires a minimum output capacitance of 10uF and a minimum ESR of 10mΩ. The input and output capacitors should be placed close to the IC, and the feedback network should be designed to provide a stable gain margin.
  • The LT3797 is capable of delivering up to 7A of output current. However, the maximum output current may be limited by the thermal design of the system and the input voltage.

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LT3797ELXE#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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