LT3669HUFD-2#TRPBF IO-Link Transceiver | Analog Devices
料号： LT3669HUFD-2#TRPBF ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.14 | $7.14 |
| 10 | $7.14 | $71.40 |
| 100 | $7.14 | $714.00 |
| 500 | $7.14 | $3,570.00 |
| 1,000 | $5.38 | $5,380.00 |
LT3669HUFD-2#TRPBF 概述
An IO-Link transceiver is a specialized industrial interface device that combines a physical-layer communication channel with sensor and actuator support. IO-Link systems use point-to-point industrial connections for communication and power between a master and compatible sensors or actuators. The LT3669-2 integrates that interface function with local power conversion, reducing the number of separate supply blocks in an industrial sensor circuit.
The LT3669-2 differs from the base LT3669 in its external power-path requirements. According to the manufacturer product page, the LT3669 integrates the catch diode and supports load current up to 100 mA, whereas the LT3669-2 requires an external catch diode and supports load current up to 300 mA. This distinction makes the -2 version appropriate when the local regulator output must deliver more current, provided the external diode and associated layout requirements are implemented correctly.
Wake-up detect functionality helps the interface recognize activity on the connected line, while the programmable power-on-reset timer provides a defined startup delay for system sequencing. These features are relevant to industrial sensors where deterministic initialization, controlled sensor energization, and robust point-to-point communication are required. The integrated step-down regulator and LDO can support local sensor-power and interface-power requirements when the board-level voltage plan and thermal limits are properly designed.
Typical IO-Link applications include proximity sensors, photoelectric sensors, pressure and temperature sensing modules, industrial actuator interfaces, and factory-automation equipment. The single-transceiver arrangement is particularly useful for compact sensor nodes that require a communication interface and regulated auxiliary power without a separate communications transceiver.
Layout and power design remain critical. Place the catch diode and energy-storage components exactly as required by the manufacturer application guidance, and verify the exposed-pad thermal path when the 300 mA version operates near its maximum documented load. The package designation uses a QFN footprint, so the PCB land pattern, exposed-pad soldering, and pin numbering should be checked against the manufacturer datasheet before release to manufacturing. This product page combines verified distributor and manufacturer information with engineering guidance for IO-Link and industrial sensor designs.
直接替换替代料： LT3669HUFD-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： LT3669HUFD-2#TRPBF （相同外形与封装尺寸） ——差异在于 Package, Transceiver Configuration, Product Type, Wake-Up Detect, Power-On Reset.
快速对比工具——选择替代料号进行并排对比：
LT3669HUFD-2#PBF
✅ 直接替换✓ 有现货
$5.38 / 个
查看数据手册 →LT3669EUFD-2#PBF
✅ 直接替换✓ 有现货
$5.38 / 个
查看数据手册 →LT3669IUFD#PBF
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →LT3669HUFD#TRPBF
✅ 直接替换✓ 有现货
$2.9079 / 个
查看数据手册 →LT3669HUFD-2#TRPBF 规格参数
| Product Type | IO-Link transceiver with integrated step-down regulator and LDO |
| Transceiver Configuration | 1/1 single transceiver |
| 封装 | 28-QFN (4 mm x 5 mm) |
| 安装类型 | Surface mount |
| Power Path | Step-down switching regulator with integrated LDO |
| LT3669-2 Load Current | Up to 300 mA |
| Base LT3669 Load Current | Up to 100 mA |
| LT3669-2 Catch Diode | External catch diode required |
| Wake-Up Detect | Supported |
| Power-On Reset Timer | Programmable |
| Industrial Interface | IO-Link |
| Product Status | LT3669-2 recommended for new designs |
| Supplier Price Reference | $5.38 starting from 1,000 units, as of 2026-10-23 |
| Distributor Unit Price Reference | $7.14 starting price, as of 2026-10-23 |
LT3669HUFD-2#TRPBF 28-qfn (4 mm x 5 mm) 引脚配置指南
LT3669HUFD-2#TRPBF（28-qfn (4 mm x 5 mm) 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： LT3669HUFD-2#TRPBF.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LT3669HUFD-2#TRPBF 适用于 6 应用s: Industrial Proximity Sensor Interface, Photoelectric Sensor Module, Pressure and Temperature Sensor Node, Factory Automation Actuator Interface, Industrial Condition Monitoring Device, Compact Industrial Sensor Gateway.
Industrial Proximity Sensor Interface
The LT3669HUFD-2#TRPBF fits compact industrial proximity-sensor nodes because it combines a 1/1 IO-Link transceiver with local power conversion. The interface can communicate with an IO-Link master while the integrated step-down regulator and LDO supply local circuit requirements. The LT3669-2 version is documented up to 300 mA and requires an external catch diode, so it is attractive when the sensor node needs more auxiliary current than the base LT3669’s 100 mA configuration. Design the diode, layout, thermal path, and output network around the manufacturer application circuit.
推荐
Photoelectric Sensor Module
An IO-Link photoelectric sensor module benefits from integrating communications and regulated auxiliary power in one interface IC. The LT3669HUFD-2#TRPBF provides the single-transceiver path for the industrial connection and includes wake-up detect plus a programmable power-on-reset timer, helping coordinate sensor startup. The 300 mA LT3669-2 load capability can support a more demanding sensor subcircuit than the base LT3669, but the external catch diode and all switching components must follow the datasheet layout. Validate startup timing against the sensor’s output-valid requirements.
推荐
Pressure and Temperature Sensor Node
The LT3669HUFD-2#TRPBF is suitable for a compact pressure or temperature sensor node where a sensor, digital interface, and regulated local power share a limited board area. The IO-Link transceiver provides the industrial point-to-point communication path, while the integrated step-down regulator and LDO reduce the number of separate supply blocks. Wake-up detect can help the node respond to line activity, and the programmable power-on-reset timer can delay initialization until the local rail is ready. The 300 mA specification is documented, but thermal and transient performance must be checked for the actual load.
推荐
Factory Automation Actuator Interface
For factory-automation actuator modules, the LT3669HUFD-2#TRPBF can combine an IO-Link communication endpoint with a local regulated supply. The single-transceiver format is appropriate for a dedicated point-to-point actuator interface, while wake-up detect supports activity-based control signaling and the programmable reset timer provides a controlled startup interval. The LT3669-2’s verified 300 mA capability is useful for auxiliary actuator electronics, but it is not a guarantee that every load can be supplied without thermal headroom. Confirm output voltage, current transients, diode selection, and exposed-pad cooling in the final design.
推荐
Industrial Condition Monitoring Device
The LT3669HUFD-2#TRPBF can support a condition-monitoring device that combines sensing, local processing, and IO-Link connectivity. Its integrated regulator functions may simplify power partitioning in a compact module, while the programmable power-on-reset timer helps establish a repeatable startup sequence for the attached sensor electronics. The 1/1 architecture avoids unnecessary transceiver channels when only one industrial connection is required. Engineers should still verify the complete pinout, voltage limits, regulator compensation or stability requirements, and thermal behavior because those detailed values are not present in the supplied distributor snippets.
推荐
Compact Industrial Sensor Gateway
The LT3669HUFD-2#TRPBF is relevant to compact sensor gateways that need a local IO-Link endpoint and regulated power in a small QFN footprint. Its 28-QFN 4 mm by 5 mm package helps preserve PCB area, while the integrated step-down and LDO functions can reduce external supply-component count. The LT3669-2 requires an external catch diode and is documented up to 300 mA, making the power-path layout a central design consideration. Use the manufacturer datasheet for the exact pinout and application circuit, and test startup, communication timing, thermal rise, and load transients in the final gateway board.
推荐
推荐产品汇总
工程参考数据： LT3669HUFD-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 | LT3669HUFD-2#PBF | LT3669EUFD-2#PBF | LT3669IUFD#PBF | LT3669HUFD#TRPBF |
|---|---|---|---|---|---|
| Product Type | IO-Link transceiver with integrated step-down regulator and LDO | IO-Link transceiver with integrated step-down regulator and LDO | IO-Link transceiver with integrated step-down regulator and LDO | IO-Link transceiver with integrated step-down regulator and LDO | IO-Link transceiver with integrated step-down regulator and LDO |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | QFN-28 (4x5) | QFN-28 (4x5) | QFN-28 (4x5) | QFN-28 (4x5) | QFN-28 (4x5) |
| Catch Diode | External catch diode required | External catch diode required | External catch diode required | Integrated catch diode | Integrated catch diode |
关键差异点
- Higher documented auxiliary load capability （对比 LT3669HUFD#TRPBF)
- External catch-diode architecture （对比 LT3669IUFD#PBF)
- Single-transceiver integration （对比 LT3669HUFD#TRPBF)
- Tape-and-reel order configuration （对比 LT3669HUFD-2#PBF)
设计说明
Treat the LT3669-2 catch diode as a required board component. The manufacturer states that the -2 version requires an external catch diode and supports load current up to 300 mA, unlike the base LT3669 with an integrated diode and up to 100 mA. Select the diode and passive network from the official datasheet, orient it exactly as shown, and verify the switching loop on the PCB. Do not assume that the QFN footprint alone makes a base LT3669 electrically interchangeable.
Follow the manufacturer’s recommended placement for the external catch diode, inductor, input/output capacitors, and exposed-pad thermal path. Keep the high-current switching loop compact and route it away from sensitive IO-Link or sensor signal paths. The verified data confirms a 28-QFN 4 mm by 5 mm package but does not provide the full pin table or layout drawing; use the official 3669fa.pdf datasheet and verify the CAD land pattern against the package drawing before fabrication.
The documented LT3669-2 load-current capability is up to 300 mA, but that value alone does not establish safe board temperature. Evaluate regulator dissipation using the actual input voltage, output voltage, load duty cycle, ambient temperature, and exposed-pad copper area. Estimated: dissipated power is approximately (VIN - VOUT) multiplied by load current, excluding control and conversion losses; use this only as an engineering estimate and compare the resulting junction-temperature margin with the datasheet limits.
Do not confuse the LT3669 and LT3669-2 power paths or assume that the 28-QFN package determines electrical compatibility. The verified product page distinguishes integrated versus external catch-diode arrangements and 100 mA versus 300 mA load capability. Also verify wake-up detect and programmable reset timing in the firmware and hardware startup sequence. Detailed supply limits, IO-Link data rate, transmitter slew rate, and temperature limits were not supplied and must be obtained from the manufacturer datasheet before release.
合规信息
The supplied web data identifies the product as an industrial Analog Devices IO-Link transceiver and provides no verified RoHS, REACH, lead-free, halogen-free, or conflict-minerals statement. Compliance fields are therefore left unknown rather than inferred. AEC-Q100 is not applicable based on the supplied industrial product description, but no automotive qualification claim is made.
