TPS2378

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design TPS2378 SLVSB99C – MARCH 2012 – REVISED JULY 2015 TPS2378 IEEE 802.3at PoE High-Power PD Interface 1 Features 1 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 1-A (Typical) Operating Current Limit 15 kV and 8 kV System-level ESD Capability PowerPAD™ HSOP Package 2 Applications IEEE 802.3at-compliant Devices Video and VoIP Telephones Multiband Access Points Security Cameras Pico-base Stations Forced, Four-Pair, High Power Devices (SLVA625) 3 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. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) TPS2378 HSOP (8) 4.89 mm × 3.90 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application Ci...