LT3669HUFD Integrated Circuit Chip IO-Link Transceiver with Buck Regulator and LDO, 28-Lead QFN

The LT3669HUFD is an industrial transceiver that combines an IO-Link (COM1/COM2/COM3) compatible physical layer with a step down switching regulator and a low dropout linear regulator, so a remote IO or sensor node can be built from one device.

The cable interface is protected to ±60V and the part operates from 7.5V to 40V. The integrated step down regulator delivers up to 100 mA with output voltage from 0.8V to 16V, and switching frequency is adjustable and synchronizable from 250kHz to 2.2MHz so the converter can be kept clear of the IO-Link band.

A 150mA LDO linear regulator provides a quiet rail for the sensor front end. The rugged line drivers have adjustable slew rate and current limit, can be configured as push-pull, pull-up or pull-down, and an adaptive line driver pulsing scheme switches heavy loads safely.

An adjustable power on reset timer and wake up detect complete the device, which is specified over -40°C to 150°C (H grade) and supplied in a 28-Lead QFN package.

Every order of the LT3669HUFD ships as new stock with full traceability, RoHS compliant and lead free, and samples plus volume pricing are available on request.

• IO-Link PHY compatible, COM1/COM2/COM3
• Cable interface protected to ±60V
• Operation from 7.5V to 40V
• Integrated step down regulator, up to 100 mA
• Switching frequency 250kHz to 2.2MHz, synchronizable
• Output voltage 0.8V to 16V
• Integrated 150mA LDO linear regulator
• Line drivers with adjustable slew rate and current limit
• Adaptive line driver pulsing for heavy loads
• Drivers configurable push-pull, pull-up or pull-down
• Adjustable power on reset timer
• 28-Lead QFN package, -40°C to 150°C (H grade)

• IO-Link device nodes
• Remote IO and field transmitters
• Industrial sensors with local regulation
• Factory automation modules
• Process instrumentation
• Machine mounted IO blocks

The LT3669HUFD puts the IO-Link PHY, the step down converter and the LDO in one 4mm x 5mm package, so an IO-Link node needs one regulator stage and one line driver instead of three separate parts.

• 15+ years of electronic components experience
• Secure ordering process
• Excellent customer feedback
• Confirmed delivery dates
• Competitive pricing on volume orders
• Global export experience with responsive after-sales support

We also carry the related parts shown below, so mixed bills of material can ship together from a single supplier.