LM5070 - 集成以太网供电 PD 接口和 PWM 控制器

LM5070是TI德州仪器公司的一款有源器件产品，LM5070是集成以太网供电 PD 接口和 PWM 控制器，本站介绍了LM5070的封装应用图解、特点和优点、功能等，并给出了与LM5070相关的TI元器件型号供参考。

LM5070 - 集成以太网供电 PD 接口和 PWM 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 LM5070 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 LM5070 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. Two options are available providing either an 80% maximum duty cycle limit with slope compensation (on the –80 suffix) device or a 50% maximum duty cycle limit and no slope compensation on the (–50 suffix) device.

产品特性

Fully Compliant 802.3af Power Interface Port
80V, 1?, 400 mA Internal MOSFET
Programmable Inrush Current Limit
Detection Resistor Disconnect Function
Programmable Classification Current
Programmable Under-voltage Lockout with Programmable Hysteresis
Thermal Shutdown Protection
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)
800 mA Peak Gate Driver

Packages

TSSOP-16
WSON-16 (5 mm x 5 mm)

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