LM5071 - 具有辅助电源接口的以太网供电 PD 控制器

LM5071是TI德州仪器公司的一款有源器件产品，LM5071是具有辅助电源接口的以太网供电 PD 控制器，本站介绍了LM5071的封装应用图解、特点和优点、功能等，并给出了与LM5071相关的TI元器件型号供参考。

LM5071 - 具有辅助电源接口的以太网供电 PD 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

The LM5071 power interface port and pulse width modulation (PWM) controller provides a complete integrated solution for Powered Devices (PD) that connect into Power over Ethernet (PoE) systems. The LM5071 is specifically designed for the PD that must accept power from auxiliary sources such as AC adapters. The auxiliary power interface of the LM5071 activates the PWM controller when the ac adapter is connected to power the PD when PoE network power is unavailable. The LM5071 integrates an 80V, 400mA line connection switch and associated control for a fully IEEE 802.3af compliant interface with a full featured current mode pulse width modulator dc-dc converter. All power sequencing requirements between the controller interface and switch mode power supply (SMPS) are integrated into the IC.

产品特性

Compatible with 12V AC Adapters
Fully Compliant 802.3af Power Interface Port
80V, 1?, 400 mA Internal MOSFET
Detection Resistor Disconnect Function
Programmable Classification Current
Programmable Under-voltage Lockout with Programmable Hysteresis
Thermal Shutdown Protection
Auxiliary Power Enable Pin
Current Mode Pulse Width Modulator
Supports both Isolated and Non-Isolated Applications
Error Amplifier and Reference for Non-Isolated Applications
Programmable Oscillator Frequency
Programmable Soft-Start
80% Maximum Duty Cycle Limiter, Slope Compensation (-80 device)
50% Maximum Duty Cycle Limiter, No Slope Compensation (-50 device)

Package

TSSOP-16

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