LM5071MT-50/NOPB集成电路（IC）的以太网供电（PoE）控制器规格书PDF中文资料

LM5071MT-50/NOPB属于集成电路（IC）的以太网供电（PoE）控制器。由德州仪器制造生产的LM5071MT-50/NOPB以太网供电（PoE）控制器以太网供电 (PoE) 控制器允许设计人员通过单个以太网连接传输电流和数据。远程设备通过以太网电缆供电，因此无需电池、本地电源适配器和其他电源电缆。桥式整流器和 N+1 O-Ring 是两种 PoE 控制器类型。可用特性可能包括 N 和 P 沟道 FET、内部开关和汽车认证。

1FEATURES

2• Compatible with 12V AC Adapters

• Fully Compliant 802.3af Power Interface Port

• 80V, 1Ω, 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)

PACKAGES

• TSSOP-16

DESCRIPTION

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.