LT3669EUFD-2#TRPBF - IO-Link Transceiver with Dual Regulators
料号： LT3669EUFD-2#TRPBF ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.38 | $5.38 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
LT3669EUFD-2#TRPBF 概述
An IO-Link transceiver is an interface IC that connects a microcontroller or PLC-side controller to an industrial point-to-point sensor or actuator link. IO-Link adds standardized digital communication and wake-up or power-control capabilities beyond a conventional simple sensor output. The LT3669 family combines that physical-layer interface with power-conversion functions, placing the transceiver, switching regulator, and LDO in one package.
Verified features include 1/1 transceiver operation, IO-Link functionality, integrated step-down regulation, integrated LDO operation, wake-up detection, and a programmable power-on reset timer for the LT3669 family. The Analog Devices LT3669-2 is listed for up to 300 mA load current and requires an external catch diode, whereas the LT3669 variant integrates the catch diode and is listed for up to 100 mA load current.
The 28-QFN (4x5) exposed-pad package is designed for surface-mount assembly and can provide a compact solution where both signal interface and local power conversion are required. The exposed pad also supports thermal conduction into the PCB, although actual thermal performance depends on copper area, board construction, ambient temperature, and load. Use the manufacturer datasheet for pin functions, recommended external components, electrical limits, timing, and layout details before finalizing a design.
Typical applications include IO-Link sensors, industrial proximity and level sensors, factory automation equipment, PLC-connected actuators, and other 24 V industrial fieldbus nodes. The LT3669EUFD-2#TRPBF is most appropriate when a compact 28-QFN footprint, integrated regulators, and the LT3669-2 external-catch-diode architecture fit the system specification.
Design attention should focus on correct pin mapping, regulator stability, catch-diode selection, exposed-pad thermal management, and separation between sensitive communication traces and switching-power paths. The verified distributor record identifies the part as a 28-QFN (4x5) IO-Link transceiver, but detailed application limits and package dimensions must be confirmed from the official Analog Devices documentation.
This product data combines the verified manufacturer and distributor identity, package information, family-level functional description, commercial source links, and practical design guidance into an engineering-oriented reference for IO-Link transceiver and power-management design.
直接替换替代料： LT3669EUFD-2#TRPBF ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： LT3669EUFD-2#TRPBF （相同外形与封装尺寸） ——差异在于 Package, Product Type, Operating Temperature Range, Package Type, Power-On Reset.
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该产品暂无直接替换替代料。
请求替代料LT3669EUFD-2#TRPBF 规格参数
| Product Type | 1/1 IO-Link transceiver with integrated step-down regulator and LDO |
| Manufacturer | Analog Devices |
| Family | LT3669 / LT3669-2 |
| Transceiver Configuration | 1/1 |
| 接口类型 | IO-Link |
| Power Conversion | Integrated step-down switching regulator and low-dropout regulator |
| LT3669-2 Load Current | Up to 300 mA |
| LT3669 Load Current | Up to 100 mA |
| Wake-Up Detection | Included |
| Power-On Reset | Programmable timer |
| 工作温度范围 | -40°C to 125°C |
| 封装 | 28-QFN (4x5 mm) |
| Package Type | 28-WFQFN exposed pad |
| 安装类型 | Surface Mount |
| Shipping Format | Reel, TR |
LT3669EUFD-2#TRPBF 28-wfqfn exposed pad 引脚配置指南
LT3669EUFD-2#TRPBF（28-wfqfn exposed pad 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： LT3669EUFD-2#TRPBF.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LT3669EUFD-2#TRPBF 适用于 6 应用s: Industrial IO-Link Proximity Sensors, PLC-Connected Industrial Sensors, Factory Automation Sensor Hubs, Industrial Level and Flow Sensors, 24 V Industrial Actuator Interfaces, Industrial IO-Link Valve and Valve-Control Nodes.
Industrial IO-Link Proximity Sensors
The LT3669EUFD-2#TRPBF fits industrial IO-Link proximity-sensor nodes because it combines a 1/1 IO-Link transceiver with local power conversion. The integrated step-down regulator and LDO can reduce the number of supply stages needed around the sensor interface, while wake-up detection supports field-bus power-management behavior. The LT3669-2 variant is listed for up to 300 mA load current and requires an external catch diode, so the sensor-node budget must be checked against that limit. In a typical 24 V industrial installation, the device can interface the sensor to a controller while supporting local regulated power. Final selection requires the complete datasheet electrical limits, pin map, and thermal design.
推荐
PLC-Connected Industrial Sensors
This transceiver is suited to PLC-connected sensor nodes that need both IO-Link communication and regulated auxiliary power. The verified 1/1 transceiver configuration supports a point-to-point industrial interface, while the integrated regulator architecture can simplify power distribution around the sensor. The LT3669-2 family member supports up to 300 mA, which is useful when the node includes more than the transceiver itself, but the external catch diode must be implemented as specified by Analog Devices. Engineers should verify cable-side limits, wake-up timing, power-on reset behavior, and isolation or grounding requirements against the complete application circuit before releasing a PLC module design.
推荐
Factory Automation Sensor Hubs
In a factory automation hub, multiple field devices may require local power regulation alongside robust communication interfaces. LT3669EUFD-2#TRPBF consolidates an IO-Link transceiver, step-down converter, and LDO into one 28-QFN device, which can reduce board partitioning compared with separate blocks. Its -40°C to 125°C operating-temperature specification is appropriate for industrial environments when the surrounding equipment is also qualified. The LT3669-2 external-catch-diode architecture must be respected, and the exposed pad needs adequate PCB thermal design. Use the verified family data as the starting point and consult the manufacturer datasheet for layout, startup, efficiency, and absolute-maximum limits.
推荐
Industrial Level and Flow Sensors
Level and flow sensors often need a local interface that can combine sensor excitation, communication, and regulated power in a compact assembly. The LT3669EUFD-2#TRPBF provides the IO-Link transceiver and integrated step-down regulator and LDO in a 4 mm by 5 mm QFN package, helping constrain board area. Wake-up detection and the programmable power-on reset timer can support orderly recovery and field-bus power control. The part must be evaluated against the sensor's actual load current, startup profile, wiring length, and environmental limits. Because the supplied data does not list detailed sensor-specific thresholds, engineers should not assume compatibility from the IO-Link label alone.
推荐
24 V Industrial Actuator Interfaces
The LT3669EUFD-2#TRPBF can support the interface section of a 24 V industrial actuator node when the actuator requires IO-Link communication and local auxiliary power. Its integrated regulator functions can simplify the power tree, while the transceiver handles the communication channel. The LT3669-2 variant is listed for up to 300 mA load current, so it is more suitable than the 100 mA LT3669 variant when the local load budget requires the higher target, subject to exact datasheet limits. Check inductive actuator transients, protection networks, grounding, and thermal rise before using the device directly next to power-switching stages.
推荐
Industrial IO-Link Valve and Valve-Control Nodes
Valve-control nodes commonly benefit from a compact interface that can manage both field communication and local regulated supply. LT3669EUFD-2#TRPBF integrates those functions in a 28-QFN (4x5) surface-mount package, while wake-up detection can help the node respond to bus-powered operating sequences. The programmable power-on reset timer helps define startup behavior, but the exact delay and system power sequence must be configured according to the official documentation. Use careful partitioning between high-current valve drive circuitry and the sensitive transceiver section. The supplied data does not specify valve-driver ratings, so this device should be treated as the interface and local-power block rather than the actuator power stage.
推荐
推荐产品汇总
工程参考数据： LT3669EUFD-2#TRPBF ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | LT3669EUFD-2#PBF | LT3669EUFD#PBF | LT3669EUFD#TRPBF |
|---|---|---|---|---|
| Package | 28-QFN (4x5) | 28-QFN (4x5) | 28-QFN (4x5) | 28-QFN (4x5) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Interface | IO-Link | IO-Link | IO-Link | IO-Link |
| Integrated Power Functions | Step-down switching regulator and LDO | Step-down switching regulator and LDO | Step-down switching regulator and LDO | Step-down switching regulator and LDO |
| Catch-Diode Requirement | External catch diode required | External catch diode required | Catch diode integrated | Catch diode integrated |
关键差异点
- Higher listed load-current target than the integrated-diode LT3669 variant （对比 LT3669EUFD#PBF)
- External catch-diode architecture （对比 LT3669EUFD#TRPBF)
- Integrated IO-Link interface and local power conversion （对比 LT3669EUFD-2#PBF)
设计说明
The LT3669-2 architecture requires an external catch diode according to the verified Analog Devices family data. Select that diode and its placement using the official recommended application circuit, because incorrect orientation or placement can increase switching stress and reduce regulator performance. Keep the power-loop current path short and keep the catch-diode return close to the regulator ground reference. Do not use the LT3669 integrated-diode variant as a reference for the LT3669-2 layout without checking the datasheet difference.
Treat the 28-QFN (4x5) exposed pad as both an electrical and thermal feature. Confirm the exposed-pad connection and land pattern from the Analog Devices package drawing, then provide a controlled copper path to the board ground or thermal reference specified by the device. The supplied data does not include the exact pad dimensions or recommended footprint, so a generic QFN footprint is not sufficient for production layout. Review assembly land patterns with the selected PCB manufacturer.
Separate the IO-Link communication traces from the high-current switching-regulator path where practical. Route signal returns without crossing noisy power-current loops, and use the datasheet-recommended component placement to minimize parasitic inductance and switching disturbance. Wake-up detect and power-on reset timing are sensitive to supply and network conditions, so debug the complete startup sequence rather than evaluating only steady-state communication. Grounding, return-current control, and connector placement should be reviewed together.
Do not substitute LT3669EUFD and LT3669EUFD-2 solely because both are listed in the same family. The verified data states that LT3669 integrates the catch diode and targets up to 100 mA, while LT3669-2 requires an external catch diode and targets up to 300 mA. A design that assumes the integrated-diode arrangement can therefore fail electrically or require PCB changes. Confirm the exact MPN, external diode, package pinout, and load budget before release.
合规信息
The supplied manufacturer and distributor data confirms the component identity, industrial IO-Link function, package, and operating temperature range but does not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status.
