TPS2377 - IEEE 802.3af PoE 有源器件控制器

TPS2377是TI德州仪器公司的一款有源器件产品，TPS2377是IEEE 802.3af PoE 有源器件控制器，本站介绍了TPS2377的封装应用图解、特点和优点、功能等，并给出了与TPS2377相关的TI元器件型号供参考。

TPS2377 - IEEE 802.3af PoE 有源器件控制器 - 有源器件 - 以太网供电(PoE)/LAN解决方案 - 德州仪器

产品描述

These easy-to-use 8-pin integrated circuits contain all of the features needed to develop an IEEE 802.3af compliant powered device (PD). The TPS2375 family is a second generation PDC (PD Controller) featuring 100-V ratings and a true open-drain, power-good function.

In addition to the basic functions of detection, classification and undervoltage lockout (UVLO), these controllers include an adjustable inrush limiting feature. The TPS2375 has 802.3af compliant UVLO limits, the TPS2377 has legacy UVLO limits, and the TPS2376 has a programmable UVLO with a dedicated input pin.

The TPS2375 family specifications incorporate a voltage offset of 1.5 V between its limits and the IEEE 802.3af specifications to accommodate the required input diode bridges used to make the PD polarity insensitive.

Additional resources can be found on the TI Web site www.ti.com.

产品特性

Fully Supports IEEE 802.3af Specification
Integrated 0.58-Ω, 100-V, Low-Side Switch
15-kV System Level ESD Capable
Supports Use of Low-Cost Silicon Rectifiers
Programmable Inrush Current Control
Fixed 450-mA Current Limit
Fixed and Adjustable UVLO Options
Open-Drain, Power-Good Reporting
Overtemperature Protection
Industrial Temperature Range: –40°C to 85°C
8-Pin SOIC and TSSOP Packages
APPLICATIONS
- VoIP Phones
- WLAN Access Points
- Security Cameras
- Internet Appliances
- POS Terminals

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