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LT8643SEV#TRPBF - Analog Devices

Description: 42V, 6A Synchronous Step-Down Silent Switcher 2 with 2.5μA Quiescent Current

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LT8643SEV#TRPBF - Analog Devices - PCB symbol
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LT8643SEV#TRPBF - Analog Devices PCB footprint - Other - Other - LT8643SEV#TRPBF.
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LT8643SEV#TRPBF - Analog Devices - 3D model - Other - LT8643SEV#TRPBF.
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LT8643SEV#TRPBF Details

  • Manufacturer Part Number:

    LT8643SEV#TRPBF

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    LQFN-24

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Analog IC - Other Type:

    SWITCHING REGULATOR

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    SILENT SWITCHER

  • Input Voltage-Max:

    42 V

  • Input Voltage-Min:

    3.4 V

  • Input Voltage-Nom:

    6 V

  • JESD-30 Code:

    S-XQCC-N24

  • Length:

    4 mm

  • Number of Functions:

    1

  • Number of Terminals:

    24

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    6 A

  • Output Voltage-Max:

    10 V

  • Output Voltage-Min:

    0.97 V

  • Package Body Material:

    UNSPECIFIED

  • Package Code:

    QCCN

  • Package Equivalence Code:

    LCC24,.16SQ,20

  • Package Shape:

    SQUARE

  • Package Style:

    CHIP CARRIER

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    1.03 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    2100 kHz

  • Technology:

    BIPOLAR

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    4 mm

LT8643SEV#TRPBF 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 input and output capacitors close to the device and using short, wide traces can help reduce thermal resistance.
  • To optimize the compensation network, you need to consider the output capacitor's ESR, the output voltage, and the desired transient response. You can use the datasheet's compensation network design guidelines and the manufacturer's online tools, such as the LTpowerCAD, to help design and simulate the compensation network for your specific application.
  • The maximum allowed input voltage ripple for the LT8643SEV is not explicitly stated in the datasheet, but as a general rule, it's recommended to keep the input voltage ripple below 10% of the nominal input voltage to ensure stable operation and prevent oscillations.
  • While ceramic capacitors can be used as output capacitors, they may not be the best choice due to their high ESR and potential for resonance. X5R or X7R ceramic capacitors with a low ESR (< 10mΩ) and a high ripple current rating can be used, but it's recommended to use a capacitor with a low ESR and a high ripple current rating, such as an electrolytic or polymer capacitor, for optimal performance.
  • To ensure the device is operating within the safe operating area (SOA), you need to consider the input voltage, output voltage, output current, and junction temperature. You can use the datasheet's SOA graphs and equations to determine the maximum allowed output current and junction temperature for your specific application.

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LT8643SEV#TRPBF Overview

Use the download button to access the LT8643SEV#TRPBF schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like LT864, or try a keyword search, such as Switching Regulator or Controllers

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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