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LT1681ISW#TRPBF - Analog Devices

Description: Regulator Output DC-DC Controller IC 20-SO

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LT1681ISW#TRPBF - Analog Devices - PCB symbol
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LT1681ISW#TRPBF - Analog Devices PCB footprint - Small Outline Packages - Small Outline Packages - SW Package 20-Lead Plastic Small Outline (Wide .300 Inch)
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LT1681ISW#TRPBF - Analog Devices - 3D model - Small Outline Packages - SW Package 20-Lead Plastic Small Outline (Wide .300 Inch)
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LT1681ISW#TRPBF Details

  • Manufacturer Part Number:

    LT1681ISW#TRPBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    0.300 INCH, PLASTIC, SO-20

  • Pin Count:

    20

  • Manufacturer Package Code:

    05-08-1620 (SW20)

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    CONSTANT FREQUENCY

  • Input Voltage-Max:

    18 V

  • Input Voltage-Min:

    9 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e3

  • Length:

    12.8 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    2.65 mm

  • Supply Current-Max (Isup):

    1.2 mA

  • Surface Mount:

    YES

  • Switcher Configuration:

    PUSH-PULL

  • Switching Frequency-Max:

    700 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    7.5 mm

LT1681ISW#TRPBF Frequently Asked Questions (FAQs)

  • A good PCB layout for the LT1681ISW involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing trace lengths and widths to reduce parasitic inductance and capacitance. A 4-layer PCB with a dedicated power plane and a dedicated ground plane is recommended.
  • To ensure stability, make sure to follow the recommended component values and PCB layout guidelines. Additionally, ensure that the output capacitor has a low equivalent series resistance (ESR) and a high ripple current rating. A minimum output capacitance of 10uF is recommended.
  • The maximum ambient temperature range for the LT1681ISW is -40°C to 125°C. However, the device's performance and reliability may degrade at higher temperatures, so it's recommended to operate it within a temperature range of -20°C to 85°C for optimal performance.
  • Yes, the LT1681ISW is qualified for automotive and high-reliability applications. It meets the AEC-Q100 standard for automotive grade devices and is suitable for use in harsh environments.
  • To troubleshoot issues with the LT1681ISW, start by checking the input voltage, output voltage, and output current. Verify that the input and output capacitors are properly connected and meet the recommended specifications. Check for any signs of overheating, such as excessive temperature rise or thermal shutdown. Use an oscilloscope to check for output voltage ripple or oscillations.

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LT1681ISW#TRPBF Overview

Use the download button to access the LT1681ISW#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 LT168, 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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Part Image LT1681ISW#TR Linear Technology

Switching Controller, Current-mode, 700kHz Switching Freq-Max, PDSO20