TPS2370D - IEEE 802.3af PoE Power Interface Switch | TI
MPN: TPS2370D ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.6946 | $2.69 |
| 10 | $2.6946 | $26.95 |
| 100 | $2.6946 | $269.46 |
| 500 | $2.6946 | $1,347.30 |
| 1,000 | $2.6946 | $2,694.60 |
TPS2370D Overview
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.
Drop-in alternatives for TPS2370D — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TPS2370D (same form factor and footprint) — differing in Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TPS2370
✅ Drop-In📋 Reference alternative (not in catalog)
TPS2379DDAR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS2378DDAR
✅ Drop-In✓ In Stock
$0.44 / Unit
View Datasheet →TPS2370D
✅ Drop-In✓ In Stock
$2.6946 / Unit
View Datasheet →TPS2370D
✅ Drop-In✓ In Stock
$2.6946 / Unit
View Datasheet →TPS2370D Maximum Ratings & Electrical Characteristics
| Product Type | IEEE 802.3af Power-over-Ethernet power interface switch |
| Application | PoE powered devices |
| Standard | IEEE 802.3af |
| Manufacturer | Texas Instruments |
| Package | 8-SOIC (0.154 inch, 3.90 mm width) |
| Mounting Type | 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) Pin Configuration Guide
Pin configuration for TPS2370D (8-soic (0.154 inch, 3.90 mm width) package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for TPS2370D.
Refer to the datasheet for full pin configuration.
Typical Applications
TPS2370D is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Engineering reference data for TPS2370D — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
Key Differentiators
- IEEE 802.3af-specific interface role (vs TPS2379DDAR)
- Verified 8-SOIC package identification (vs TPS2378DDA)
- Commercial-grade sourcing reference (vs TPS2370)
Design Notes
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.
Compliance Information
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.
