TI TPS2378DDA

控制器（PD）25.5 W802.3at（PoE+），802.3af（PoE）

Overview

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This 8-pin integrated circuit contains all of the features needed to implement an IEEE802.3at type-2 powered device (PD). The low 0.5-Ω internal switch resistance, combined with the enhanced thermal dissipation of the PowerPAD? package, enables this controller to continuously handle up to 0.85 A. The TPS2378 features an auxiliary power detect (APD) input, providing priority for an external power adapter. It also features a 100-V pass transistor, 140-mA inrush current limiting, type-2 indication, auto-retry fault protection, and an open-drain power-good output.

Features

Tube Package
Tube package
8 pins
The output current of 850mA
750mOhm (Ω)

Surface Mount Mounting Type

Applications

There are a lot of Texas Instruments
TPS2378DDA Power Over Ethernet (PoE) Controllers applications.

• Non-Compliant, Application Specific Devices
• Higher Power Ethernet Powered Devices
• IP Phone Power Management
• Wireless Access Points
• Security Cameras
• Power over Ethernet
• PoE powered device appliances
• High power (>12.95 W) powered devices
• IEEE 802.3bt (Draft) Compliant Devices
• Lighting