LTC4269CDKD-1 Integrated Circuit Chip IEEE 802.3at Powered Device Controller with 25.5W Max Power and 37.2V ~ 60V Supply

The LTC4269CDKD-1 is an IEEE 802.3at High Power PD and No-Opto Flyback Controller with AUX Support. This integrated Powered Device (PD) controller and switching regulator is designed for high power IEEE 802.3at and 802.3af applications, offering high efficiency for single and multioutput applications from 10W to 25W.

• 25.5W IEEE 802.3at Compliant (Type 2) PD
• Integrated State-of-the-Art Synchronous Flyback Controller
• Isolated Power Supply Efficiency >92%
• 88% Efficiency Including Diode Bridge and Hot Swap™ FET
• Flexible Integrated Auxiliary Power Support
• Superior EMI Performance
• Robust 100V 0.7Ω (Typ) Integrated Hot Swap MOSFET
• IEEE 802.3at High Power Available Indicator
• Integrated Signature Resistor and Programmable Class Current
• Undervoltage, Overvoltage and Thermal Protection
• Short-Circuit Protection with Auto-Restart
• Programmable Soft-Start and Switching Frequency
• Complementary Power Good Indicators
• Thermally Enhanced 7mm * 4mm DFN Package

• VoIP Phones with Advanced Display Options
• Dual-Radio Wireless Access Points
• PTZ Security Cameras
• RFID Readers
• Industrial Controls