Overview

Features and Benefits

  • IO-Link® PHY Compatible (COM1/COM2/COM3)
  • Cable Interface Protected to ±60V
  • Operation from 7.5V to 40V
  • Integrated Step-Down Switching Regulator
    • Max Load Current: 100mA (LT3669)/300mA (LT3669-2)
    • Synchronizable and Adjustable Switching Frequency: 250kHz to 2.2MHz
    • Output Voltage: 0.8V to 16V
  • Integrated 150mA LDO Linear Regulator
  • Rugged Line Drivers with Adjustable Slew Rate and Current Limit
  • Adaptive Line Driver Pulsing Scheme to Switch Heavy Loads Safely
  • Drivers Configurable as Push-Pull, Pull-Up or Pull-Down
  • Adjustable Power-On Reset Timer
  • Small 28-Pin Thermally Enhanced 4mm × 5mm QFN Package

Product Details

The LT3669 is an industrial transceiver that includes a step-down switching regulator and a low dropout linear regulator. Wake-up detect functionality, as well as a programmable power-on reset timer are also included. The current limit and slew rate of the transmitters are externally adjustable for optimum EMC performance.

The line drivers can source/sink up to 250mA of current each or 500mA when connected together, with a minimal residual voltage of less than 2.1V. An internal adaptive pulsing scheme allows the drivers to safely switch heavy capacitive loads and incandescent bulbs. Thermal shutdown provides additional protection. Line protection of ±60V in the line interface pins allows the use of standard TVS diodes with L+ operating voltages up to 40V.

The switching regulator integrates the catch diode in LT3669 (up to 100mA load current) and requires an external catch diode in LT3669-2 (up to 300mA load current).

The LT3669 implements an IO-Link device PHY. For IO-Link master designs, see the LTC2874.

Applications

  • Industrial Sensors and Actuators

Product Categories

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (3)

Product Recommendations

LT3669 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

Discussions

LT3669 Discussions

RE: EMI Problem with LT3669-2
15 week(s) ago in Interface and Isolation
EMI Problem with LT3669-2
19 week(s) ago in Interface and Isolation
RE: LT3669 uC SPI communication
22 week(s) ago in Interface and Isolation
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.