TPS2370D - IEEE 802.3af PoE Power Interface Switch | TI
MPN： TPS2370D ✓ 啟用中TPS2370D 概覽
A PoE power interface switch is the bridge between an Ethernet cable and a powered-device power supply. Ethernet carries data and power on the same cable, so the powered device must identify the available power source, control the connection, and protect the interface before accepting power. The TPS2370D is designed around IEEE 802.3af-compatible PoE powered-device behavior and is suitable for IP phones, wireless access points, surveillance equipment, and other network peripherals.
The manufacturer product page identifies TPS2370 as an IEEE 802.3af power interface switch for PoE powered devices. Distributor listings identify TPS2370D as an 8-SOIC device. The verified data does not provide a complete electrical table, so ratings such as input voltage range, current limit, channel timing, protection thresholds, and temperature limits must be taken directly from the manufacturer datasheet before final design release. Those unprovided values are intentionally not inferred here.
The TPS2370D belongs to the PoE interface-controller category, which sits between Ethernet connectivity and downstream power management. It is not a general-purpose voltage regulator or a DC/DC converter. A typical design uses the device at the Ethernet connector or PoE input, then passes the selected power to a DC/DC converter that creates the low-voltage rails required by the powered device.
For a new PoE design, verify connector pinout, cable polarity protection, isolation requirements, thermal performance, and the IEEE 802.3af power-class limits against the current TI documentation. The D suffix denotes the verified 8-SOIC ordering variant, while package-specific land patterns and exposed-pad details must be confirmed from the package drawing rather than inferred from generic SOIC drawings.
This product page consolidates the verified manufacturer identification, package information, distributor data, and cross-reference findings. It deliberately distinguishes confirmed facts from parameters requiring the datasheet, which helps engineers evaluate sourcing without treating unverified electrical claims as design data.
直接替換替代品，適用於 TPS2370D — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TPS2370D （相同外形與佔位） — 差異在於 Package.
TPS2370
✅ 直接替換📋 參考替代品（不在目錄中）
TPS2379DDAR
✅ 直接替換📋 參考替代品（不在目錄中）
TPS2378DDAR
✅ 直接替換聯絡詢價
查看資料表 →TPS2370D 最大額定值與電氣特性
| Product Type | IEEE 802.3af Power-over-Ethernet power interface switch |
| Application | PoE powered devices |
| Standard | IEEE 802.3af |
| Manufacturer | Texas Instruments |
| 封裝 | 8-SOIC (0.154 inch, 3.90 mm width) |
| 安裝類型 | Surface mount |
| Terminal Count | 8 terminals |
| Temperature Grade | Commercial |
| RoHS | unknown |
| REACH | unknown |
| AEC-Q100 Qualification | not_applicable |
| Lead-Free Status | unknown |
| Datasheet Page Count | 18 pages |
| Reference Unit Price | $2.6946 per unit |
| Verified Stock Reference | 7,856 pieces |
TPS2370D 8-soic (0.154 inch, 3.90 mm width) 腳位配置指南
TPS2370D（8-soic (0.154 inch, 3.90 mm width) 封裝）的腳位配置。 此功率元件具有閘極、汲極與源極端子。對於非極性封裝，請參閱製造商資料表以取得確切的第 1 腳方向與佈局詳細資訊。常見應用包括電源設計、馬達驅動與負載切換。
無詳細腳位定義資料： TPS2370D.
請參閱 資料表 以查看完整腳位配置。
典型應用
TPS2370D 適用於 6 應用s: IP Phone Power Interface, Wireless Access Point, Network Camera, Industrial Ethernet Endpoint, VoIP Network Terminal, Wireless Network Infrastructure.
IP Phone Power Interface
TPS2370D fits the powered-device side of an IEEE 802.3af Ethernet phone because it provides the PoE interface-switch function rather than attempting to create system rails directly. Place the device in the network-input power path, then use a separate converter for the phone's low-voltage requirements. The verified data confirms IEEE 802.3af support and an 8-SOIC package, but the input voltage, current limits, classification behavior, and protection thresholds must be checked in the TI datasheet before selecting external components.
推薦
Wireless Access Point
A wireless access point can use TPS2370D where a single Ethernet connection supplies both communications and power. The IC belongs ahead of the access point's DC/DC converter, allowing the PoE input and protection functions to be handled separately from the point's internal 3.3 V or 5 V rails. The confirmed 8-SOIC surface-mount package supports compact board construction, while IEEE 802.3af alignment makes the interface suitable for legacy PoE infrastructure. Exact power and thermal limits remain to be verified from manufacturer documentation.
推薦
Network Camera
TPS2370D can support the powered-device front end of a network camera that receives power through Ethernet rather than a local adapter. The device should be designed with the correct connector wiring, cable protection, and downstream converter so that the camera's imaging electronics receive stable regulated rails. The verified commercial-grade classification may be adequate for ordinary indoor equipment, but environmental requirements for outdoor installations must be checked separately. No complete TPS2370D electrical rating was present in the supplied data.
推薦
Industrial Ethernet Endpoint
An industrial Ethernet endpoint can use TPS2370D when its power budget falls within the intended IEEE 802.3af system design and its environmental requirements are documented. The 8-SOIC package is practical for a compact controller board, but industrial temperature, surge, isolation, and EMC requirements may exceed what can be concluded from the verified snippets. Engineers should compare the manufacturer electrical limits against the cable, connector, enclosure, and downstream converter before committing to the device.
推薦
VoIP Network Terminal
TPS2370D is appropriate for the PoE input portion of a VoIP terminal or network-connected peripheral. Its role is to interface with the Ethernet power source, not to replace the system regulator or provide a complete power supply. The verified 8-SOIC package and IEEE 802.3af identification make it a logical starting point for a compact implementation, followed by checking pinout, startup behavior, protection limits, and required decoupling in the TI datasheet.
推薦
Wireless Network Infrastructure
TPS2370D may be evaluated for network infrastructure equipment that receives standard PoE power through an Ethernet cable, provided its operating limits match the endpoint's environmental and electrical requirements. The device can help isolate the PoE power-management function from the data and processing circuitry while a separate converter supplies the radio and logic rails. The verified distributor data identifies the part as commercial grade, so outdoor, extended-temperature, or automotive use requires additional qualification evidence.
推薦
工程參考資料，適用於 TPS2370D — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TPS2370 | TPS2379DDAR | TPS2378DDA | TPS2370D | TPS2370D |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-SOIC | 8-SOIC; exact package variant requires confirmation | 8-SOIC; exact package variant requires confirmation | 8-SOIC; exact package variant requires confirmation | 8-SOIC | 8-SOIC |
主要差異化特點
- IEEE 802.3af-specific interface role (對比TPS2379DDAR)
- Verified 8-SOIC package identification (對比TPS2378DDA)
- Commercial-grade sourcing reference (對比TPS2370)
設計說明
Design the PoE input path from the IEEE 802.3af power budget and the TPS2370D manufacturer application circuit. Do not assume that the downstream converter's current rating establishes the interface switch's safe current. Verify input-voltage tolerance, startup behavior, protection thresholds, and cable/connector limits in the TI datasheet before selecting magnetics, resistors, or protection components.
Keep the Ethernet input, PoE power interface, and downstream converter layout within the current TI recommended layout. Pay particular attention to high-voltage creepage, connector-to-IC separation, ground return paths, and exposed copper around the 8-SOIC footprint. Confirm the exact package drawing because the verified data identifies 8-SOIC but does not provide a detailed land pattern.
Do not treat TPS2370D as a complete PoE power supply or assume that an IEEE 802.3af label specifies every electrical limit. The part is an interface switch, so downstream conversion, input filtering, cable wiring, and protection remain separate design responsibilities. Verify pin names from the manufacturer datasheet because the supplied web data does not provide a complete public pinout.
合規資訊
The verified web data identifies commercial temperature grade and IEEE 802.3af functionality but does not provide explicit TPS2370D RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 claims. No automotive qualification is established.
