TPS2378

更新时间： 2024-11-15 11:44:23

品牌	Logo	应用领域
德州仪器 - TI		光电二极管
页数	文件大小	规格书
25页	493K
描述
IEEE 802.3at PoE High-Power PD Interface

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TPS2378 数据手册

TPS2378

www.ti.com

SLVSB99A –MARCH 2012–REVISED MARCH 2012

IEEE 802.3at PoE High-Power PD Interface

Check for Samples: TPS2378

FEATURES

APPLICATIONS

•

IEEE 802.3at Type-2 Hardware Classification

with Status Flag

•

IEEE 802.3at-compliant Devices

Video and VoIP Telephones

Multiband Access Points

Security Cameras

•

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

Pico-base Stations

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.

SO-8 PowerPad

APD

T2P

V_DD

DEN

CLS

V_SS

CDB

RTN

V_C

TPS2378

V_DD

R_T2P

T2P

DEN

CLS

CDB

APD

RTN

V_SS

D_A

R_APD1

Adapter

Figure 1. Typical Application

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...25

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