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LT3922HUFD#PBF - Analog Devices

Description: 36V, 2A Synchronous Step-Up LED Driver

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LT3922HUFD#PBF - Analog Devices - PCB symbol
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PCB Footprints
LT3922HUFD#PBF - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - UFD (28-Lead QFN)_2025
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3D Models
LT3922HUFD#PBF - Analog Devices - 3D model - Quad Flat No-Lead - UFD (28-Lead QFN)_2025
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LT3922HUFD#PBF Details

  • Manufacturer Part Number:

    LT3922HUFD#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    QFN-28

  • Pin Count:

    28

  • Manufacturer Package Code:

    05-08-1712

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Data Input Mode:

    SERIAL

  • Input Characteristics:

    STANDARD

  • Interface IC Type:

    LED DISPLAY DRIVER

  • JESD-30 Code:

    R-PQCC-N28

  • JESD-609 Code:

    e3

  • Length:

    5 mm

  • Moisture Sensitivity Level:

    1

  • Multiplexed Display Capability:

    NO

  • Number of Functions:

    1

  • Number of Segments:

    2

  • Number of Terminals:

    28

  • Operating Temperature-Max:

    150 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Characteristics:

    CONSTANT-CURRENT

  • Output Polarity:

    TRUE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Equivalence Code:

    LCC28,.16X.2,20

  • Package Shape:

    RECTANGULAR

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    0.8 mm

  • Supply Current-Max:

    4 mA

  • Supply Voltage-Max:

    36 V

  • Supply Voltage-Min:

    2.8 V

  • Supply Voltage-Nom:

    12 V

  • Surface Mount:

    YES

  • Technology:

    BIPOLAR

  • Temperature Grade:

    OTHER

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    4 mm

  • fmax-Min:

    1.88 MHz

LT3922HUFD#PBF Frequently Asked Questions (FAQs)

  • The recommended PCB layout for optimal thermal performance involves placing the device on a 2-layer or 4-layer board with a solid ground plane on the bottom layer, and using thermal vias to connect the exposed pad to the ground plane. Additionally, keeping the thermal path short and using a thermal pad on the top layer can help to reduce thermal resistance.
  • To ensure reliable operation in high-temperature environments, it is recommended to follow proper thermal design and layout guidelines, and to derate the device's output current and voltage according to the temperature derating curves provided in the datasheet. Additionally, using a heat sink or thermal interface material can help to reduce the device's junction temperature.
  • The recommended input and output capacitors for the LT3922HUFD#PBF are low-ESR ceramic capacitors with a voltage rating of at least 2x the input voltage. A 10uF to 22uF input capacitor and a 10uF to 47uF output capacitor are typical values. However, the optimal capacitor values may vary depending on the specific application and operating conditions.
  • To troubleshoot oscillations or instability issues with the LT3922HUFD#PBF, check the PCB layout for any signs of parasitic inductance or capacitance, and ensure that the input and output capacitors are properly selected and placed. Additionally, verify that the device is operated within its recommended operating conditions, and that the output is properly filtered and decoupled.
  • The recommended start-up sequence for the LT3922HUFD#PBF involves applying the input voltage first, followed by the enable signal. This ensures that the device is properly biased and configured before the output is enabled.

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LT3922HUFD#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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