مدار مجتمع (آی سی) آی‌سی واسط ارتباطی درایور، گیرنده و فرستنده‌گیرنده‌

Product Attributes

Introduction

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×N ports PSE system, and I²C bus uses to collect PD power status from each IP808AR to support global power managements. Management switch host has options to communicate IP808ARs via I²C bus for PSE management activities. Optocouplers can be implemented to provide electrical isolations between the host and IP808ARs for signal communication.

Features

• IEEE 802.3AF-2003 and 802.3AT-2009 compliant
• Single DC power supply voltage input (45~57V)
• Pin Compatible with IP808
• Wide temperature range: -40°C~+85°C
• Supplies 8 independent power ports
• Built-in power FETs
• 0.1R sense embedded
• Built in Total current limit for Smart power management
• I²C Bus to access up to 8 × 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×8 ports
• Built-in LEDs control for multi-port use
• Built-in EEPROM interface for dumb applicatio
• Low power dissipation
• Direct or Shift Overload LED
• H/W ALT_A/ALT_B mode Setting

Applications

• 8 port PSE Switch
• 24 port PSE Switch