LTC4263-1 High Power Single PSE Controller with Internal Switch FEATURES DESCRIPTION n 30W PSE Output Power The LTC 4263-1 is a high power, single PSE controller for n IEEE 802 .3af Compatible use in Power over Ethernet systems. The internal current n Operation from a Single 56V Supply limit and short-circuit protection are designed to provide n Fully Autonomous Operation Without a up to 30W of PSE output power for power hungry PoE Microcontroller applications such as WAPs, security cameras and RFID n Internal MOSFET with Thermal Protection readers. n Precision Inrush Control with Internal Sense Resistor The LTC4263-1 includes IEEE 802.3af compliant PD detec- n Forced Current PD Detection for Noise Immunity tion circuitry along with selectable AC and DC disconnect n AC and DC Disconnect Sensing sensing, allowing seamless operation in conventional n Legacy PD Detection IEEE 802.3af systems as well as propriety, high power n Robust Short-Circuit Protection applications. The LTC4263-1 simpli es PSE implementa- n Pin-Selectable Detection Backoff for Midspan PSEs tion, needing only a single supply and a small number of n LED Driver Indicates Port On and Blinks passive support components. Onboard control algorithms Status Codes provide complete PSE functionality without the need of a n Available in a Miniature14-Pin 4mm 3mm DFN microcontroller and built-in foldback and thermal shutdown Package provide comprehensive fault protection. An LED pin indi- cates the state of the port and detection backoff timing is APPLICATIONS con gurable for either endpoint or midspan operation. n High Power Endpoint/Midspan PSEs The LTC4263-1 is available in a miniature 14-pin 4mm n Single-Port or Multi-Port Power Injectors 3mm DFN package. n Low Port Count PSEs L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. n Environment B PSEs All other trademarks are the property of their respective owners. n Standalone PSEs TYPICAL APPLICATION Single-Port Fully Autonomous High Power PSE 1A + 0.1F 0.1F 100V LTC4263-1 100V LED V DD5 ISOLATED TO PORT 0.1F 56V SUPPLY LEGACY V SS SMAJ58A MAGNETICS MIDSPAN SD V DD48 V SS OUT V SS 42631 TA01 OUT V SS ACOUT OSC 42631fa 1LTC4263-1 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1, Note 2) TOP VIEW Supply Voltages V V ........................................... 0.3V to 80V SS DD48 LED 1 14 V DD5 V ........................................ V 0.3V to V + 6V LEGACY 2 13 V DD5 SS SS SS MIDSPAN 3 12 SD Pin Voltages and Currents 15 V 4 11 V SS DD48 LEGACY, MIDSPAN, SD, OSC ..V 0.3V to V +6V SS SS V 5 10 OUT SS LED .......................................V 0.3V to V + 80V SS SS V 6 9 OUT SS OUT, ACOUT ............................................ (See Note 3) OSC 7 8 ACOUT Operating Ambient Temperature Range DE14 PACKAGE LTC4263CDE-1 ............................................ 0C to 70C 14-LEAD (4mm s 3mm) PLASTIC DFN T = 125C, = 43C/W, = 4.3C/W JMAX JA JC LTC4263IDE-1 ......................................... 40C to 85C EXPOSED PAD (PIN 15) IS V , MUST BE SOLDERED TO PCB SS Junction Temperature (Note 4) ............................. 125C Storage Temperature Range ................... 65C to 150C Lead Temperature (Soldering, 10 sec) .................. 300C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4263CDE-1 PBF LTC4263CDE-1 TRPBF 42631 0C to 70C 14-Lead (4mm 3mm) Plastic DFN LTC4263IDE-1 PBF LTC4263IDE-1 TRPBF 42631 14-Lead (4mm 3mm) Plastic DFN 40C to 85C Consult LTC Marketing for parts speci ed with wider operating temperature ranges. *The temperature grade is identi ed by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based nish parts. For more information on lead free part marking, go to: