LM5071 Series

Class 3 PoE PD with flyback DC-DC controller & 12V-57V Adapter Priority

Catalog

Class 3 PoE PD with flyback DC-DC controller & 12V-57V Adapter Priority

Part	Type	Standards	Number of Channels	Mounting Type	Voltage - Supply [Max]	Voltage - Supply [Min]	Current - Supply	Operating Temperature [Max]	Operating Temperature [Min]	Power - Max [Max]	Internal Switch(s)	Package / Case [x]	Package / Case	Package / Case [y]	Supplier Device Package	Regulator Topology	Voltage - Input [Min]	Voltage - Input [Max]	Utilized IC / Part	Board Type	Supplied Contents	Voltage - Output	Frequency - Switching	Power - Output	Main Purpose	Outputs and Type	Outputs and Type	Current - Output
Texas Instruments LM5071MTX-50/NOPB	Controller (PD) DC/DC	802.3af (PoE)	1	Surface Mount	60 V	1.8 V	1 mA	125 °C	-40 °C	12.95 W	Both	0.173 in	16-TSSOP	4.4 mm	16-TSSOP
Texas Instruments LM5071EVAL/NOPB																Flyback	38 V	60 V	LM5071	Fully Populated	Board(s)	3.3 V	250 kHz	10.89 W	Power Over Ethernet Special Purpose DC/DC	Isolated	1	3.3 A
Texas Instruments LM5071MT-80/NOPB	Controller (PD) DC/DC	802.3af (PoE)	1	Surface Mount	60 V	1.8 V	1 mA	125 °C	-40 °C	12.95 W	Both	0.173 in	16-TSSOP	4.4 mm	16-TSSOP
Texas Instruments LM5071MTX-80/NOPB	Controller (PD) DC/DC	802.3af (PoE)	1	Surface Mount	60 V	1.8 V	1 mA	125 °C	-40 °C	12.95 W	Both	0.173 in	16-TSSOP	4.4 mm	16-TSSOP
Texas Instruments LM5071MT-50/NOPB	Controller (PD) DC/DC	802.3af (PoE)	1	Surface Mount	60 V	1.8 V	1 mA	125 °C	-40 °C	12.95 W	Both	0.173 in	16-TSSOP	4.4 mm	16-TSSOP

Catalog

Class 3 PoE PD with flyback DC-DC controller & 12V-57V Adapter Priority

Key Features

• Compatible with 12V AC AdaptersFully Compliant 802.3af Power Interface Port80V, 1Ω, 400 mA Internal MOSFETDetection Resistor Disconnect FunctionProgrammable Classification CurrentProgrammable Under-voltage Lockout with Programmable HysteresisThermal Shutdown ProtectionAuxiliary Power Enable PinCurrent Mode Pulse Width ModulatorSupports both Isolated and Non-Isolated ApplicationsError Amplifier and Reference for Non-Isolated ApplicationsProgrammable Oscillator FrequencyProgrammable Soft-Start80% Maximum Duty Cycle Limiter, Slope Compensation (-80 device)50% Maximum Duty Cycle Limiter, No Slope Compensation (-50 device)PackageTSSOP-16All trademarks are the property of their respective owners.Compatible with 12V AC AdaptersFully Compliant 802.3af Power Interface Port80V, 1Ω, 400 mA Internal MOSFETDetection Resistor Disconnect FunctionProgrammable Classification CurrentProgrammable Under-voltage Lockout with Programmable HysteresisThermal Shutdown ProtectionAuxiliary Power Enable PinCurrent Mode Pulse Width ModulatorSupports both Isolated and Non-Isolated ApplicationsError Amplifier and Reference for Non-Isolated ApplicationsProgrammable Oscillator FrequencyProgrammable Soft-Start80% Maximum Duty Cycle Limiter, Slope Compensation (-80 device)50% Maximum Duty Cycle Limiter, No Slope Compensation (-50 device)PackageTSSOP-16All trademarks are the property of their respective owners.

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. 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.