LT3669
LT3669-2
Info : RECOMMENDED FOR NEW DESIGNS
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LT3669
LT3669-2

IO-Link Transceiver with Integrated Step-Down Regulator and LDO

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Part Models 12
1ku List Price Starting From $4.25
Features
  • 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
Additional Details
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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
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Documentation View All Documentation
Part Models 12
1ku List Price Starting From $4.25
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LT3669
LT3669-2

Documentation

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Data Sheet

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UPDATED 02/03/2015
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LT3669: IO-Link Transceiver with Integrated Step-Down Regulator and LDO Data Sheet

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UPDATED 07/02/2014
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LT3669: 降圧レギュレータとLDOを内蔵したIO-Linkトランシーバ データシート

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User Guide

2

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UPDATED 05/04/2015
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DC2227A - Demo Manual redirect icon

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UPDATED 06/18/2014
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DC1733A - Demo Manual redirect icon

227.00K

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Reliability Data

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UPDATED 03/26/2018
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R530 Reliability Data redirect icon

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Technical Articles

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UPDATED 01/17/2014
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Safely Light Miniature Incandescent Lamps using LTC2874 redirect icon

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UPDATED 10/01/2014
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UPDATED 10/01/2014
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Documentation

Product Selection Guide 1

Digital Isolation and Interface Technology Selection Guide

Solutions Bulletin & Brochure 1

End-to-End IO-Link Solutions

Product Selector Card 1

Quad IO-Link PHY Master Solution

Video

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2020-10-28

01:00

Protect your Innovations: from High Precision to High Power

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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.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT3669EUFD#PBF 28-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT3669EUFD#TRPBF 28-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT3669EUFD-2#PBF 28-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT3669EUFD-2#TRPBF 28-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT3669HUFD#PBF 28-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT3669HUFD#TRPBF 28-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT3669HUFD-2#PBF 28-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT3669HUFD-2#TRPBF 28-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT3669IUFD#PBF 28-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT3669IUFD#TRPBF 28-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT3669IUFD-2#PBF 28-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT3669IUFD-2#TRPBF 28-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link

Software & Part Ecosystem

Parts Product Life Cycle Description

IO-Link1
LTC2874
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PRODUCTION

Quad IO-Link Master Hot Swap Controller and PHY

Evaluation Kits 3

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DC1733A-A

LT3669-1 Demo Board | 7.5V to 40V input with VOUT1 being 5V at 100mA and VOUT2 (LDO) being 3.3V at 100mA

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DC1733A-A

LT3669-1 Demo Board | 7.5V to 40V input with VOUT1 being 5V at 100mA and VOUT2 (LDO) being 3.3V at 100mA

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DC1733A-A
LT3669-1 Demo Board | 7.5V to 40V input with VOUT1 being 5V at 100mA and VOUT2 (LDO) being 3.3V at 100mA
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Product Detail

Demonstration circuit 1733A is an industrial transceiver with integrated step-down regulator and LDO featuring the LT3669. The board operates from 7.5V to 40V when JP7 is set to L+. When the JP7 is set to RES, the minimum input voltage is 16.5V. The board withstands transients up to 60V. The step-down regulator output is 5V. The LDO output is 3.3V. There are two assembly versions. DC1733A-A is for the LT3669 and DC1733A-B is for the LT3669-2. The difference is the LT3669 has an integrated catch diode. The LT3669-2 requires an external catch diode.

Resources

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ZIP

DC1733A - Design Files Download

1.00M

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PDF

DC1733A - Demo Manual Download

227.00K

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PDF

DC1733A - Schematic Download

37.00K

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DC2227A

LT3669-2 Demo Board | I/O Link with 18V to 36V Input to 4V at 300mA and 3.3V at 150mA

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DC2227A

LT3669-2 Demo Board | I/O Link with 18V to 36V Input to 4V at 300mA and 3.3V at 150mA

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DC2227A
LT3669-2 Demo Board | I/O Link with 18V to 36V Input to 4V at 300mA and 3.3V at 150mA
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Product Detail

Demonstration circuit 2227A is a complete IO-Link® device built using the LT3669-2 to implement an IO-Link v1.1 physical interface (PHY). The IO-Link stack protocol runs on an Atmel ATmega microcontroller which connects to LT3669-2’s logic IO-signals to communicate with an IO-Link master via the CQ1 transceiver.

Resources

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ZIP

DC2227A - Design Files Download

1.00M

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PDF

DC2227A - Demo Manual Download

1.00M

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PDF

DC2227A - Schematic Download

51.00K

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reference details image

DC1733A-B

LT3669-2 Demo Board | 7.5V to 40V input with VOUT1 being 5V at 300mA and VOUT2 (LDO) being 3.3V at 150mA

zoom

DC1733A-B

LT3669-2 Demo Board | 7.5V to 40V input with VOUT1 being 5V at 300mA and VOUT2 (LDO) being 3.3V at 150mA

download icon

Download

 print icon

Print
DC1733A-B
LT3669-2 Demo Board | 7.5V to 40V input with VOUT1 being 5V at 300mA and VOUT2 (LDO) being 3.3V at 150mA
Buy Now View Details

Product Detail

Demonstration circuit 1733A is an industrial transceiver with integrated step-down regulator and LDO featuring the LT3669. The board operates from 7.5V to 40V when JP7 is set to L+. When the JP7 is set to RES, the minimum input voltage is 16.5V. The board withstands transients up to 60V. The step-down regulator output is 5V. The LDO output is 3.3V. There are two assembly versions. DC1733A-A is for the LT3669 and DC1733A-B is for the LT3669-2. The difference is the LT3669 has an integrated catch diode. The LT3669-2 requires an external catch diode.

Resources

pdf icon

ZIP

DC1733A - Design Files Download

1.00M

pdf icon

PDF

DC1733A - Demo Manual Download

227.00K

pdf icon

PDF

DC1733A - Schematic Download

37.00K

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Evaluation Kits3

evaluation kit item images

DC1733A-A

LT3669-1 Demo Board | 7.5V to 40V input with VOUT1 being 5V at 100mA and VOUT2 (LDO) being 3.3V at 100mA
evaluation kit item images

DC2227A

LT3669-2 Demo Board | I/O Link with 18V to 36V Input to 4V at 300mA and 3.3V at 150mA
evaluation kit item images

DC1733A-B

LT3669-2 Demo Board | 7.5V to 40V input with VOUT1 being 5V at 300mA and VOUT2 (LDO) being 3.3V at 150mA

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