Texas Instruments TPS2378DDA

Description

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

• IEEE 802.3at Type-2 Hardware Classification with Status Flag
• Adapter Priority Input
• DC/DC Converter Enable
• Robust 100 V, 0.5 Ω Hotswap MOSFET
• Operating Current up to 850 mA
• 1A (Typical) Operating Current Limit
• 15 kV/8 kV System-level ESD Capability
• PowerPAD SO-8 Package

Remarks:1.From User guides (2)TPS2378EVM-105 User's Guide

• Transformer T1 is used with TPS2378DDA IC2.adapter input is taken

Typical applications

• IEEE 802.3at-compliant Devices
• Multiband Access Points
• Forced, Four-Pair, High Power Devices
• Security Cameras
• Video and VoIP Telephones
• Pico-base Stations

More information

• Datasheet
• IC product information