TI TPS2378DDAR

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

Overview

All trademarks are the property of their respective owners.

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

• Adapter Priority Input

• DC/DC Converter Enable

• Operating Current up to 850 mA

• 15 kV and 8 kV System-level ESD Capability

Applications

• IEEE 802.3at-compliant Devices 

• Video and VoIP Telephones

• Multiband Access Points

• Security Cameras