Analog Devices

LT3669EUFD#PBF - IO-Link Transceiver with Buck/LDO | Analog Devices

Teilenummer: LT3669EUFD#PBF ✓ Aktiv
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7.5 V to 40 V Vdss Externally adjustable Id 28-QFN (4 mm x 5 mm) Package
Ab $9.2 USD / Stück
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Preis aktualisiert: 2026-10-22
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Menge Stückpreis Gesamt
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LT3669EUFD#PBF Übersicht

The Analog Devices LT3669EUFD#PBF is an industrial IO-Link transceiver with an integrated step-down switching regulator and low-dropout linear regulator in a 28-QFN package. It combines wake-up detect functionality, a programmable power-on reset timer, and externally adjustable transmitter current limit and slew rate. The device is identified as a single transmitter/receiver IO-Link interface solution for industrial sensor and actuator systems.

An IO-Link transceiver is a specialized interface IC that connects sensors, actuators, and industrial equipment using power and communication lines. The LT3669 integrates that interface function with local power conversion, allowing a system designer to provide both the IO-Link communication path and regulated auxiliary power from one device. Its architecture belongs to the transceiver, interface IC, power-management IC, and embedded industrial-control hierarchy.

The principal verified features include a 28-pin QFN surface-mount package, integrated step-down regulator and LDO, wake-up detect, programmable power-on reset timing, and adjustable transmitter current limit and slew rate. The manufacturer describes the LT3669 family as recommended for new designs. These features make it useful in industrial IO-Link master or sensor interfaces where space, local power, fault handling, and deterministic startup behavior matter.

The device can be used in industrial automation equipment, factory sensor nodes, actuator interfaces, process-control systems, and IO-Link-compatible sensor modules. The integrated power regulators reduce the number of separate support components, while wake-up detection can help a connected system recognize a remote device state. The programmable power-on reset timer provides additional control during system startup and recovery.

When designing around the LT3669EUFD#PBF, engineers should verify the exact electrical limits, pin functions, regulator settings, and external component values against the official LT3669/LT3669-2 datasheet. The QFN package also requires careful PCB layout and thermal management. The integrated switching regulator can introduce layout-dependent EMI and high-current paths, so input decoupling, switching-loop minimization, and exposed-pad thermal design should be reviewed before production.

This product page combines the verified Analog Devices product information, distributor listings, and practical engineering guidance. It is intended to help engineers identify the correct IO-Link transceiver, compare package and lifecycle information, locate the datasheet, and plan a robust industrial interface implementation. The target MPN includes the E suffix and PBF lead-free ordering designation; variant and package details should be confirmed against the manufacturer documentation before substituting or upgrading.

LT3669EUFD#PBF is best suited to compact industrial IO-Link systems where communication, auxiliary power, wake-up detection, and programmable startup behavior are integrated in a single 28-QFN device. Use the manufacturer datasheet as the authority for final electrical, thermal, timing, and application values.

Drop-in-Alternativen für LT3669EUFD#PBF – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.

Varianten dieser Serie

Modelle derselben Serie, die drop-in-kompatibel sind mit LT3669EUFD#PBF (gleiche Bauform und Footprint) – abweichend in Package, Operating Temperature Range, Wake-Up Detect, Integrated Power Functions, RoHS Status.

Analog Devices
Package: 28-pin QFN, 4 mm x 5 mm
Operating Temperature Range: -40 °C to +125 °C
Integrated Power Functions: Step-down switching regulator and low-dropout linear regulator
Vergleichen mit LT3669EUFD#PBF →
Analog Devices
Package: 28-pin QFN, 4 mm × 5 mm, exposed pad
Wake-Up Detect: Integrated
Vergleichen mit LT3669EUFD#PBF →
Analog Devices
Package: 28-pin QFN with exposed pad
Integrated Power Functions: Step-down switching regulator and LDO
Vergleichen mit LT3669EUFD#PBF →

Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:

LT3669EUFD-2#PBF

✅ Drop-In
Analog Devices
📦 28-QFN (4 mm x 5 mm)
IO-Link transceiver with integrated step-down regulator and LDO · IO-Link · 1 transmitter · 1 receiver · 7.5 V to 40 V · Up to 300 mA · External catch diode required for LT3669-2 · -40 °C to +125 °C

✓ Auf Lager

$5.38 / Stück

Datenblatt ansehen →

LT3669HUFD#PBF

✅ Drop-In
Analog Devices
📦 QFN-28
IO-Link transceiver with integrated step-down regulator and LDO · 1 transmitter and 1 receiver · COM1, COM2, and COM3 compatible · 7.5 V to 40 V · ±60 V · 16 V · 150 mA · Integrated

✓ Auf Lager

$3.8294 / Stück

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LT3669IUFD#PBF

✅ Drop-In
Analog Devices
📦 QFN-28
IO-Link transceiver with integrated step-down regulator and LDO · 7.5 V to 40 V · -40 C to +125 C · Step-down switching regulator and LDO · Industrial IO-Link transceiver · Included · Programmable timer · Externally adjustable

✓ Auf Lager

Preis auf Anfrage

Datenblatt ansehen →

LT3669EUFD-PBF

✅ Drop-In ⚠️ Spezifikationen ungeprüft
📦 QFN-28
Same core LT3669EUFD ordering family without the visible # ordering separator; confirm exact suffix and datasheet configuration

📋 Referenzalternative (nicht im Katalog)

LT3669EUFD#PBF

✅ Drop-In
Analog Devices
📦 28-QFN (4 mm x 5 mm)
IO-Link transceiver with integrated step-down regulator and LDO · Single transmitter/receiver · 7.5 V to 40 V · -40 C to +125 C · 28-QFN (4 mm x 5 mm) · Surface mount · Step-down switching regulator and low-dropout linear regulator · Included

✓ Auf Lager

$9.2 / Stück

Datenblatt ansehen →

LT3669EUFD#PBF Technische Daten

Product Type IO-Link transceiver with integrated step-down regulator and LDO
Transmitter/Receiver Configuration Single transmitter/receiver
Supply Voltage Range 7.5 V to 40 V
Betriebstemperaturbereich -40 C to +125 C
Gehäuse 28-QFN (4 mm x 5 mm)
Montageart Surface mount
Integrated Power Conversion Step-down switching regulator and low-dropout linear regulator
Wake-Up Detect Included
Power-On Reset Programmable timer
Transmitter Current Limit Externally adjustable
Transmitter Slew Rate Externally adjustable
Interface Category Industrial IO-Link transceiver
RoHS-Status Details available through manufacturer product data
Lead-Free Designation PBF
Package Pin Count 28 pins
Exposed Thermal Pad QFN package detail
Manufacturer Analog Devices

LT3669EUFD#PBF 28 pins Pinbelegungsleitfaden

Pinbelegung für LT3669EUFD#PBF (28 pins-Gehäuse). Pin-Nummerierung, Funktionen und Anschlussdiagramme sind im Herstellerdatenblatt definiert. Entnehmen Sie diesem den genauen Footprint und Lötrichtlinien.

Pinbelegungsdiagramm für LT3669EUFD#PBF im 28 pins-Gehäuse

Keine detaillierten Pinbelegungsdaten verfügbar für LT3669EUFD#PBF.

Siehe die Datenblatt für die vollständige Pin-Konfiguration.

Typische Anwendungen

LT3669EUFD#PBF ist geeignet für 6 Anwendungs: Industrial IO-Link Sensor Interface, Factory Automation Actuator Node, Process-Control Sensor Module, Industrial Sensor-to-PLC Gateway, Compact Industrial Power-and-Communication Module, Industrial Detection and Wake-Up Control.

🏭

Industrial IO-Link Sensor Interface

The LT3669EUFD#PBF fits an industrial IO-Link sensor interface because it combines a single IO-Link transceiver with an integrated step-down regulator and LDO. The verified 7.5 V to 40 V supply range accommodates industrial bus environments, while wake-up detect supports device-state or connection-related handling. Place the transceiver near the connector and route the IO-Link lines away from the switching-regulator power path. The integrated power conversion can reduce board area, but the exact output settings, capacitor values, protection requirements, and timing must follow the manufacturer datasheet.

🏭

Factory Automation Actuator Node

For factory automation actuator nodes, the LT3669EUFD#PBF provides an IO-Link communication interface together with local regulated power support. Its integrated step-down regulator and LDO can simplify a compact actuator module that must interface with a PLC or industrial master. The 28-QFN package supports dense layouts, although exposed-pad thermal management and careful switching-node layout are essential. Verify current capability, fault behavior, and regulator configuration in the datasheet before selecting the device for a particular actuator load.

🌐

Process-Control Sensor Module

The LT3669EUFD#PBF can be used in a process-control sensor module that needs IO-Link communication and regulated auxiliary power in a limited footprint. The integrated power stages make the device relevant to compact field-mounted electronics, while the -40 C to +125 C specified operating range supports demanding industrial environments. Designers should place input and output decoupling close to the device, isolate communication traces from high-current switching paths, and validate EMC, protection, and sensor accuracy at the system level.

🔧

Industrial Sensor-to-PLC Gateway

The LT3669EUFD#PBF is suitable for a sensor-to-PLC gateway that terminates an IO-Link connection and supplies local power to a sensor or actuator. Its single transmitter/receiver configuration and integrated regulators help reduce component count in distributed industrial control systems. The programmable power-on reset timer can make startup sequencing more deterministic, while wake-up detect can assist with connection-state management. Validate the exact IO-Link electrical levels, timing, and protection network against the target PLC interface.

⚡

Compact Industrial Power-and-Communication Module

The LT3669EUFD#PBF is useful when an industrial module needs both communication and auxiliary power from a single device. Combining an IO-Link transceiver, step-down converter, and LDO can simplify power partitioning around sensors, actuators, and local logic. The 28-QFN package allows a compact implementation, but the regulator must be laid out with short switching loops and adequate thermal copper. Confirm output-current ratings, efficiency, stability, and startup behavior in the official datasheet before release.

🧩

Industrial Detection and Wake-Up Control

The LT3669EUFD#PBF can support detection and control functions where wake-up behavior and programmable startup timing are important. Analog Devices specifically identifies wake-up detect and a programmable power-on reset timer as features of the LT3669 family. These functions can simplify behavior around remote sensors, actuator wake-up, and controlled power sequencing. The implementation must account for connector noise, threshold selection, timing margins, and the distinction between device wake-up and normal IO-Link communication.

What is the LT3669EUFD#PBF?
The LT3669EUFD#PBF is an Analog Devices industrial IO-Link transceiver with an integrated step-down switching regulator and LDO. It also includes wake-up detect and a programmable power-on reset timer. According to the manufacturer product page, the LT3669 family is recommended for new designs and combines IO-Link communication with local power conversion in a 28-QFN package.
What is the operating voltage of LT3669EUFD#PBF?
The LT3669EUFD#PBF operates from 7.5 V to 40 V according to the verified distributor and manufacturer product information. That range suits industrial systems where the interface must tolerate a relatively wide supply input. The exact regulator settings, current ratings, and pin-level electrical limits should be confirmed in the official Analog Devices datasheet before final design release.
What package does LT3669EUFD#PBF use?
The LT3669EUFD#PBF uses a 28-QFN package measuring 4 mm by 5 mm, with a surface-mount mounting style. The package includes an exposed-pad arrangement that requires PCB thermal and layout attention. DigiKey identifies the related LT3669EUFD-2#PBF as a 28-QFN 4 mm by 5 mm device, and the manufacturer documentation should be used for the final land pattern.
Where can I download the LT3669EUFD#PBF datasheet?
The official LT3669/LT3669-2 datasheet is available from Analog Devices at https://www.analog.com/media/en/technical-documentation/data-sheets/3669fa.pdf. The manufacturer page at https://www.analog.com/en/products/lt3669.html also provides product information, documentation, and ordering resources. Use the manufacturer PDF for pin functions, electrical characteristics, timing, regulator settings, and application details.
Does LT3669EUFD#PBF integrate an LDO and switching regulator?
Yes. The LT3669EUFD#PBF integrates both a step-down switching regulator and a low-dropout linear regulator. This combination can reduce the number of separate power-conversion components in an IO-Link interface design. The actual output capabilities and selection resistors are application-specific and must be verified against the official datasheet.
Where can I buy LT3669EUFD#PBF online?
LT3669EUFD#PBF can be sourced through authorized electronics distributors and the Analog Devices sample and buy channels listed on the manufacturer product page. The verified search data includes DigiKey, Mouser-related search results, Octopart, and distributor listings. Pricing and inventory are time-sensitive; the listed unit price of $9.20 is reported as of 2026-10-23 and should be reconfirmed before purchase.
What is the price of LT3669EUFD#PBF?
The verified distributor search results report a starting unit price of $9.20 for LT3669EUFD#PBF as of 2026-10-23. Price can vary with quantity, distributor, date code, and authorized-channel inventory. The available data does not establish a guaranteed volume-price schedule, so the commercial value should be confirmed with the supplier at the required quantity.
What is the lead time for LT3669EUFD#PBF?
The verified data does not provide a guaranteed lead time for LT3669EUFD#PBF. DigiKey search results indicate that the related LT3669EUFD-2#PBF can ship today, but that statement does not establish the lead time or stock status of the exact target MPN. Request a dated quotation and availability confirmation from an authorized distributor before committing the BOM.
Is LT3669EUFD#PBF in stock?
Exact stock status for LT3669EUFD#PBF cannot be confirmed from the provided data. The target appears in distributor search results and on an Octopart page that aggregates availability, but the results do not state a verified quantity or current stock commitment. Check the Analog Devices product page and authorized distributor inventory using the exact suffix LT3669EUFD#PBF.
What can replace LT3669EUFD#PBF?
The verified cross-reference search identifies LT3669EUFD-2#PBF as a closely related Analog Devices variant in the same LT3669 family and 28-QFN package. It is the strongest listed candidate for design review, but the available data does not prove exact pin-for-pin electrical equivalence for every function. Review the LT3669/LT3669-2 datasheet and any ordering-code differences before calling it a drop-in replacement.
What is the difference between LT3669EUFD#PBF and LT3669EUFD-2#PBF?
LT3669EUFD#PBF and LT3669EUFD-2#PBF are both Analog Devices LT3669-family IO-Link transceivers listed in the 28-QFN class, but the verified search results do not provide a complete function-by-function comparison. The -2 ordering variant should be checked for different electrical settings, timing, or channel configuration in the official datasheet. Treat it as a candidate replacement, not an automatic substitute.
When should I choose LT3669EUFD#PBF over LT3669EUFD-2#PBF?
Choose LT3669EUFD#PBF when the original design has been qualified around that exact ordering code and its verified datasheet configuration. Consider LT3669EUFD-2#PBF only after confirming that its electrical limits, regulator behavior, IO-Link configuration, and startup timing match the existing board. The verified data confirms the family relationship but does not establish all differences, so engineering review is required.
Is LT3669EUFD#PBF suitable for industrial automation?
Yes. The LT3669EUFD#PBF is described by Analog Devices as an industrial IO-Link transceiver and includes a 7.5 V to 40 V supply range, -40 C to +125 C operating range, wake-up detect, and integrated power conversion. Those characteristics fit industrial sensor and actuator interfaces, subject to final signal-integrity, thermal, protection, and regulatory validation.
Does LT3669EUFD#PBF support wake-up detection?
Yes. Analog Devices identifies wake-up detect as a feature of the LT3669 family. The function can help an IO-Link system identify a connected device or wake-related line activity, depending on the application wiring and configuration. The manufacturer datasheet should be consulted for the exact detection thresholds, timing, and recommended external components.
What is the LT3669EUFD#PBF pinout location?
The LT3669EUFD#PBF pinout is contained in the official Analog Devices LT3669/LT3669-2 datasheet PDF. Because the verified web results do not provide a complete numbered pin table, this page does not invent pin names or pin numbering. Open the manufacturer datasheet and use the 28-QFN pin diagram, including the exposed pad, before laying out or modifying a PCB.
What design considerations apply to the LT3669EUFD#PBF QFN layout?
The LT3669EUFD#PBF requires careful QFN layout, especially around the integrated step-down switching regulator and exposed pad. Keep high-current input and switching paths compact, provide the required decoupling capacitors, route sensitive IO-Link signals away from switching nodes, and verify thermal copper area. These are implementation practices rather than additional manufacturer specifications; confirm capacitor values and layout limits in the datasheet.

Technische Referenzdaten für LT3669EUFD#PBF – Vergleich, Designhinweise und Compliance-Informationen.

Auswahlhilfe

Choose LT3669EUFD#PBF when your industrial design needs an IO-Link transceiver with integrated step-down and LDO power conversion, wake-up detect, and programmable power-on reset timing, and when the exact 28-QFN footprint and ordering code have already been qualified. Consider LT3669EUFD-2#PBF as the closest listed family candidate for a same-package review, but confirm every electrical and timing difference before substitution. LT3669HUFD#PBF and LT3669IUFD#PBF are also family-related search candidates, yet the supplied data does not prove exact pin compatibility or identical configuration. For a cross-brand replacement, no verified candidate was found, so do not treat a generic IO-Link transceiver as drop-in. The final choice must be based on the official datasheet, PCB footprint, regulator requirements, IO-Link timing, and availability.

Vergleich mit Alternativen

Parameter Dieses Produkt LT3669EUFD-2#PBF LT3669HUFD#PBF LT3669IUFD#PBF LT3669EUFD-PBF LT3669EUFD#PBF
Package 28-QFN (4 mm x 5 mm) 28-QFN (4 mm x 5 mm) QFN-28 QFN-28 QFN-28 28-QFN (4 mm x 5 mm)
Brand Analog Devices Analog Devices Analog Devices Analog Devices Analog Devices Analog Devices
Product Category IO-Link transceiver IO-Link transceiver IO-Link transceiver Transceiver IO-Link transceiver IO-Link transceiver

Wichtigste Unterscheidungsmerkmale

  • Integration of IO-Link communication and local power conversion (vs. LT3669EUFD-2#PBF)
  • Industrial supply and temperature range (vs. LT3669EUFD-2#PBF)
  • Startup and connection-management features (vs. LT3669HUFD#PBF)
  • Single IC integration for compact sensor nodes (vs. LT3669IUFD#PBF)

Designhinweise

Treat the LT3669EUFD#PBF as a mixed-signal and power-layout device. Place the required input and output capacitors close to their associated pins, keep the step-down switching loop compact, and route high-current paths away from the IO-Link signal traces. Confirm the exact capacitor values, exposed-pad connection, and land pattern in the official datasheet before fabrication.

The 28-QFN package provides limited board area for heat removal, so thermal performance depends on the PCB copper and exposed-pad implementation. Use the datasheet thermal information to determine whether additional copper, cooling, or airflow is required for the calculated regulator dissipation. Do not infer thermal performance from package size alone, and measure junction temperature in the final assembly when necessary.

Do not substitute LT3669EUFD-2#PBF, LT3669HUFD#PBF, or LT3669IUFD#PBF solely because the parts appear in the same family or package search results. Confirm ordering-code meaning, pin functions, electrical limits, timing, and regulator settings against the datasheet. In particular, verify the exposed-pad connection and any suffix-dependent configuration before calling a candidate a drop-in replacement.

Compliance-Informationen

RoHS
Unknown
REACH
Unknown
AEC-Q100
Unknown
Bleifrei
Yes
Halogenfrei
Unknown
Konfliktmineralien
Unknown

The PBF suffix indicates lead-free ordering, but the supplied web results do not provide complete RoHS, REACH, halogen-free, conflict-minerals, or AEC-Q100 certification data.

Daten verifiziert am: 2026-10-23 – Daten geprüft und kuratiert vom Bauteil-Engineering-Team von XAIPART

Ähnliche Suchanfragen

LT3669EUFD#PBF LT3669EUFD#PBF datasheet Analog Devices LT3669EUFD#PBF LT3669 EUFD IO-Link transceiver 28-QFN 4mm x 5mm IO-Link transceiver LT3669 integrated buck regulator LDO LT3669 industrial sensor interface LT3669EUFD-2#PBF replacement LT3669EUFD#PBF buy price LT3669EUFD#PBF pinout LT3669EUFD#PBF lead time LT3669 wake-up detect power-on reset

Verwandte Bauteile & Begriffe

Analog Devices LT3669EUFD#PBF LT3669EUFD-2#PBF LT3669HUFD#PBF LT3669IUFD#PBF LT3669/LT3669-2 IO-Link IO-Link transceiver industrial transceiver interface IC step-down switching regulator low-dropout linear regulator LDO wake-up detect programmable power-on reset timer industrial automation factory automation process control sensor node actuator interface 28-QFN QFN package surface mount 7.5 V to 40 V -40 C to +125 C RoHS REACH
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