IP808数据手册IC+中文资料规格书

描述 Description

IP808 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.
 IP808 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 supplies maximum 36W per port.

Multiple IP808s can build a cost-effective PHY level PSE system to support PD classification and power management without a host. With a management host, a networked LLDP (Link Layer Discovery Protocol) based multiple IP808s PSE system can be built. Based on LLDP (part of IEEE Std 802.3AT-2009), dynamic power management between PSE and PD can be maintained in real time for power efficiency. 
 Management switch host has options to communicate IP808s via I2C bus for PSE management activities. Opt couplers can be implemented to provide electrical isolations between the host and IP808s for signal communication.

特性 Features

• IEEE 802.3AF-2003 and 802.3AT-2009 compliant 

• Single DC power supply voltage input (45~57V) 

• Wide temperature range: -40°C~+85°C 

• Supplies 8 independent power ports 

• Built-in power FETs 

• I2C Bus to access up to 8 x IP808 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:
30W x 8 ports 

• Built-in LEDs control 

• Built-in EEPROM interface for dumb application 

• Low power dissipation 

• Package and operation temperature 
48 Pin(7mmx7mm) MQFN, -40~85°C