Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Controller (PD), DC/DC
Number of Channels:	1
Power - Max:	12.95W
Internal Switch(s):	Both
Auxiliary Sense:	Yes
Standards:	802.3af (PoE)
Voltage - Supply:	1.8 V ~ 60 V
Current - Supply:	1mA
Operating Temperature:	-40°C ~ 125°C
Package / Case:	16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	16-TSSOP
Base Part Number:	LM5071

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Power Over Ethernet (PoE) Controllers

LM5071MTX-50/NOPB Application Field and Working Principle

Power over Ethernet (PoE) controllers are essential components in various power electronics solutions. The LM5071MTX-50/NOPB is an advanced IEEE 802.3af compliant power over Ethernet (PoE) conformance integrated circuit, with a highly efficient DC-DC boost converter to convert an incoming PoE input voltage to a constant output voltage. This device offers high accuracy, high efficiency, and low start-up current consumption, making it perfect for applications focused on cost optimization and power efficiency.

Description of the LM5071MTX-50/NOPB

The LM5071MTX-50/NOPB is an advanced IEEE802.3af compliant power over Ethernet (PoE) conformance integrated circuit, which features a high efficiency DC-DC boost converter. It uses non-linear control to accurately regulate an incoming PoE input voltage to a constant output voltage, even in cases where the input voltage drops or surges. The LM5071MTX-50/NOPB offers a high degree of power efficiency and stability in various challenging environments. It also exhibits extremely low start-up current consumption, making it perfect for applications focused on cost optimization and power efficiency.

Operation and Performance of the LM5071MTX-50/NOPB

The device is designed to turn-on when the coupled IEEE 802.3af compliant PD signal is detected. It then regulates the PD voltage to a constant and stable output voltage, which can be programmed to suit various applications. The LM5071MTX-50/NOPB contains an array of different features, including an over voltage protection mechanism that guards against input faults or overvoltage scenarios, a UVLO pre-regulation circuitry for improved performance and a wide input voltage range of 6V-36V. The LM5071MTX-50/NOPB offers a wide output current range of up to 50mA, with a total efficiency of up to 90%. It also remains stable while delivering up to 1A of output current. Additionally, the device offers various protections to ensure safe and reliable operation, including Over Voltage Protection, Thermal Protection, and short-circuit protection.

Application Field of the LM5071MTX-50/NOPB

The LM5071MTX-50/NOPB is suitable for a wide range of high-efficiency power over Ethernet (PoE) applications, such as in web cameras, switches, routers, wireless access points, and other consumer and industrial applications. It is designed to deliver constant and stable outputs, even when the input current fluctuates. With its advanced features, it can also be used for automotive, medical, consumer and industrial applications.

Conclusion

The LM5071MTX-50/NOPB is an advanced IEEE 802.3af compliant power over Ethernet (PoE) conformance integrated circuit, with a highly efficient DC-DC boost converter to convert an incoming PoE input voltage to a constant output voltage. It offers high accuracy, high efficiency and low start-up current consumption. It is suitable for various high-efficiency power over Ethernet applications and offers various protection mechanisms to ensure safe and reliable operation. It is an ideal device for applications focused on cost optimization and power efficiency.

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