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
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (3)
Documentation & Resources
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R530 Reliability Data3/26/2018PDF20 K
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DC2227A - Demo Manual5/4/2015PDF1M
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DC1733A - Demo Manual6/18/2014PDF227K
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Quad IO-Link PHY Master Solution11/19/2013PDF459K
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Digital Isolation and Interface Technology Selection Guide2/7/2020PDF4 M
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End-to-End IO-Link Solutions7/29/2014PDF933K
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Rugged IO-Link Solutions10/1/2014 LT Journal
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Safely Light Miniature Incandescent Lamps using LTC28741/17/2014
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.View our quality and reliability program and certifications for more information.
Support & Discussions
LT3669 Discussions
Sample & Buy
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Evaluation Boards
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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.