LM5071是TI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，本页介绍了LM5071的产品说明、应用、特性等，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 - TI公司（Texas Instruments，德州仪器）
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.
- 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
