IP804AR

IP804AR is a 4-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 Midspan and Endpoint PSE applications. IP804AR meets all IEEE 802.3af-2003 requirements, such as multi-point resistor detection, PD classification, DC Disconnect, and Back-off for Midspan. It also meets all IEEE 802.3at-2009 requirements, such as two-event classification and supply maximum 36W per port. IP804AR comprises internal temperature monitoring and thermal protection to protect against junction overheating. The 3.3V regulator is built-in to support external devices. Multiple IP804ARs can integrate to build 4×N ports PSE system, and I²C bus uses to collect PD power status from each IP804AR to support global power management. Management switch host has options to communicate IP804ARs via I²C bus for PSE management activities. Opt couplers can be implemented to provide electrical isolations between the host and IP804ARs for signal communication.

Applications

• 4 port PSE Switch
• 8 port PSE Switch

Key features

• IEEE 802.3af-2003 and 802.3at-2009 complian
• Single DC power supply voltage input (44~57V)
• Wide temperature range: -40°C~+85°C
• Supplies 4 independent power ports
• Built-in power FETs 0.1R Sense embedded I2C Bus to access up to 8 x IP804AR 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×4 ports
• Total Current/Power Limit and Overload/Temperature Warning LED Support Serial and Direct LED
• Support 4-Pair 60W application
• Support 24V low voltage application
• Built-in EEPROM interface for dumb application
• Package and operation temperature 48 Pin(7mmx7mm) QFN, -40~85°C