IEEE 802.3af/at-Compliant PD Interface Controllers Enable PoE+ Powered Devices
Maxim introduces IEEE 802.3af/at-compliant PD interface controllers that feature a 100V absolute maximum rating and built-in wall-adapter detection to simplify the design of PoE+ PDs.
SUNNYVALE, CA—February 18, 2010—Maxim Integrated (NASDAQ: MXIM) introduces the MAX5969A/MAX5969B, IEEE® 802.3af/at-compliant interface controllers for PoE+ PDs (powered devices). These devices meet all IEEE 802.3at specifications and are backwards compatible with the IEEE 802.3af standard. These controllers can withstand transient voltage spikes up to 100V (abs max) without the aid of external components. Additionally, integrated wall-adapter detection circuitry enables the seamless switchover from PoE power to wall power, thus simplifying PD backup-power designs. The MAX5969A/MAX5969B are well suited for high-power applications such as IP phones, wireless LAN access points, IP security cameras, and RFID readers.
These PD interface controllers provide the PD with detection and classification signatures and integrate an isolation power switch with inrush current control. During the inrush period, the devices limit the current to less than 180mA before switching to a higher current limit (720mA to 880mA) when the isolation power MOSFET is fully enhanced.
The MAX5969A/MAX5969B are available in a 10-pin TDFN-EP package and are fully specified over the -40°C to +85°C extended temperature range. Prices start at $1.21 (1000-up, FOB USA).
Maxim Integrated is a publicly traded company that designs, manufactures, and sells high-performance semiconductor products. The Company was founded over 25 years ago with the mission to deliver innovative analog and mixed-signal engineering solutions that add value to its customers' products. To date, it has developed over 6200 products serving the industrial, communications, consumer, and computing markets.
Maxim reported revenue in excess of $1.6 billion for fiscal 2009. A Fortune 1000 company, Maxim is included in the Nasdaq 100, the Russell 1000, and the MSCI USA indices. For more information, go to www.maximintegrated.com.