BCM5220 - 10/100BASE-TX/FX Single-Port Transceiver

10/100BASE-TX/FX Single-Port Transceiver

Lowest-Power Fast Ethernet PHY with a power dissipation of 250 mW, the BCM5220 is the industry's lowest-power Fast Ethernet PHY. It features an integrated voltage regulator, and can be supplied by either a 2.5V or 3.3V power source. In addition, the BCM5220 has several intelligent power-down states that conserve power, yet allow products based on it to automatically turn on when needed.

The BCM5220 includes a unique Intelligent Power-Management feature that powers down the device if energy is not detected on the cable. This feature is especially useful for portable and power-sensitive applications such as laptop LAN card adapters. The BCM5220 allows PCMCIA or CardBus adapters to remain plugged in and draw virtually no energy even if the client is no longer connected to the network. Because most laptop users do not remove their LAN PC card when working remotely, this feature results in a noticeably extended battery life for laptop computer users.

  • Power supply: 2.5V or 3.3V
  • Integrated voltage regulator to allow operation from a single supply source
  • Provides low power and intelligent power management
  • Improves ease of use and installation, reduced support cost