LM5073 100V Power Over Ethernet PD Interface with Aux Support
March 2007
LM5073
100V Power Over Ethernet PD Interface with Aux Support
General Description
The LM5073 Powered Device (PD) interface provides a high
performance solution that is fully compliant to IEEE 802.3af
for a PD connecting into Power over Ethernet (PoE) networks.
The LM5073 provides the flexibility for the PD to also accept
power from unregulated auxiliary sources such as AC
adapters and solar cells in a variety of configurations. The low
R
DS(ON)
PD interface hot swap MOSFET and programmable
DC current limit extend the range of LM5073 applications up
to twice the power level of IEEE 802.3af compliant devices.
The 100V maximum voltage rating simplifies selection of the
transient voltage suppressor that protects the PD from net-
work transients. Control outputs for a separate DC-DC con-
verter are provided to allow freedom to select the best DC-DC
converter topology for the particular application.
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
Programmable DC Current Limit up to 800 mA
100V, 0.7鈩?Hot Swap MOSFET
Integrated PD Signature Resistor
Integrated PoE Input UVLO
Inrush Current Limit
PD Classification Capability
Thermal Shutdown Protection
Line Over Voltage Protection
Complementary Open Drain Outputs for Controlling a DC-
DC Converter
鈻?/div>
Power Good Indicator
Applications
鈻?/div>
IEEE 802.3af Compliant PoE Powered Devices
鈻?/div>
Non-Compliant, Application Specific Devices
鈻?/div>
Higher Power Ethernet Powered Devices
Features
PD Interface
鈻?/div>
Fully Compliant IEEE 802.3af PD Interface
鈻?/div>
Versatile Auxiliary Power Options
鈻?/div>
13V Minimum Front Auxiliary Power Range
鈻?/div>
9V Minimum Rear Auxiliary Power Range
Packages
鈻?/div>
TSSOP-14 EP (Exposed Pad)
Simplified Application Diagram
30000201
漏 2007 National Semiconductor Corporation
300002
www.national.com
next
LM5073MHX相關(guān)型號PDF文件下載
-
型號
版本
描述
廠商
下載
-
英文版
SOT-23 Single-Supply Centigrade Temperature Sensor
NSC
-
英文版
SOT-23 Single-Supply Centigrade Temperature Sensor
NSC [Natio...
-
英文版
Seoul Semiconductor [CYAN LAMP LED]
SEOUL
-
英文版
ETC
-
英文版
SOT-23 Single-Supply Centigrade Temperature Sensor
NSC
-
英文版
SOT-23 Single-Supply Centigrade Temperature Sensor
-
英文版
SOT-23 Single-Supply Centigrade Temperature Sensor
NSC
-
英文版
SOT-23 Single-Supply Centigrade Temperature Sensor
NSC [Natio...
-
英文版
High Voltage Switch Mode Regulator
NSC
-
英文版
High Voltage Switch Mode Regulator
NSC [Natio...
-
英文版
Non-Isolated Flyback Evaluation Board
-
英文版
High Voltage Switch Mode Regulator
NSC
-
英文版
High Voltage Switch Mode Regulator
-
英文版
High Voltage 2.5 Amp Buck Regulator
NSC
-
英文版
High Voltage 2.5 Amp Buck Regulator
NSC [Natio...
-
英文版
High Voltage (80V) Step Down Switching Regulator
NSC
-
英文版
High Voltage (80V) Step Down Switching Regulator
NSC [Natio...
-
英文版
High Voltage (100V) Step Down Switching Regulator
NSC
-
英文版
High Voltage (100V) Step Down Switching Regulator
NSC [Natio...
-
英文版
Evaluation Board