IP808AR 8-Port PSE Controller for PoE Systems ethernet ic chip

Features General Description
IEEE 802.3AF-2003 and 802.3AT-2009 compliant
Single DC power supply voltage input (45~57V)
Pin Compatible with IP808
Wide temperature range: -40ºC~+85ºC
Supplies 8 independent power ports
Built-in power FETs
0.1R sense embedded
Built in Total current limit for Smart power management.
I 2 C Bus to access up to 8 x IP808AR devices
Continuous system monitoring for every port
Independent system parameters setting for every port
Thermal monitoring and protection
Built-in 3.3V regulators for external devices
Built-in Power on Reset
Configurations: (1) 30W x 8 ports
Built-in LEDs control for multi-port use
Built-in EEPROM interface for dumb application
Low power dissipation
Direct or Shift Overload LED
H/W ALT_A/ALT_B mode Setting
Package and operation temperature 48 Pin(7mmx7mm) QFN, -40~85ºC

Application
8 port PSE Switch
24 port PSE Switch



IP808AR is an 8-port PSE (Power Sourcing Equipment) controller IC for PoE (Power over Ethernet) systems. It integrates power, analog and logic circuits into a single chip, and can be used for Midspans and Endpoint PSE applications. IP808AR meets all IEEE 802.3AF-2003 requirements, such as multi-point resistor detection, PD classification, DC Disconnect, and Back-off for Midspans. It also meets all IEEE 802.3AT-2009 requirements, such as two-event classification and supply maximum 36W per port. IP808AR comprises internal temperature monitoring and thermal protection to protect against junction overheating. The 3.3V regulator is built-in to support external devices. Multiple IP808ARs can integrate to build an 8 x N ports PSE system, and I2 C bus uses to collect PD power status from each IP808AR to support global power managements. Management switch host has options to communicate IP808ARs via I2 C bus for PSE management activities. Optocouplers can be implemented to provide electrical isolations between the host and IP808ARs for signal communication.


 

 

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