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TPS2371 Datasheet Power Interface Switch

Manufacturer: Texas Instruments

Overview: TPS2371 SLUS566A − JULY 2003 − REVISED NOVEMBER 2003 LEGACY/IEEE802.

General Description

Acting as an interface between the Power Source Equipment (PSE) and the Powered Device (PD), the TPS2371 performs all detection, class− ification, inrush current limiting, and switch FET control that is necessary for compatibility with Legacy/IEEE 802.3af Standard.

The TPS2371 incorporates precision UVLO thresholds and hysteresis as well as a UVLO off-time delay to enable Legacy IEEE802.3af PoE compatibilty.

An internal 0.3-Ω FET provides maximum power delivery.

Key Features

  • D Integrated Power Interface Switch for IEEE 802.3af Powered Devices (PDs) D Precision UVLO Thresholds D 20-ms UVLO Off-Time Delay D Provides PD Detection Signature D Provides PD Classification Signature (Class 0.
  • 4) D Programmable Inrush Current Limit D Internal 0.3-Ω Low-Side FET D Interfaces to DC/DC Soft-Start for DC/DC Enable D Internal Thermal Protection.
  • Disconnects PD Load D 8-Pin SOIC, 8-Pin TSSOP Packages.

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