LT4293 ++ LTPoE /IEEE 802.3bt PD Interface Controller FEATURES DESCRIPTION n ++ ++ LTPoE /IEEE 802.3bt Powered Device (PD) The LT 4293 is an LTPoE /IEEE 802.3af/at/bt-compliant Controller powered device (PD) interface controller. The T2P output n ++ Supports Up to 90W PDs distinguishes between LTPoE and IEEE 802.3bt power n ++ Distinguishes Between LTPoE and IEEE 802.3bt PSEs sourcing equipment (PSE) during mutual identification n 5-Event Classification Sensing and negotiation of available power. n Superior Surge Protection (100V Absolute Maximum) The LT4293 utilizes an external, low R , N-channel, DS(ON) n Wide Junction Temperature Range hot swap MOSFET and supports the LT4320/LT4321 ideal (40Cto125C) bridges, to extend the end-to-end power delivery effi- n Overtemperature Protection ciency and eliminate costly heat sinks. The LT4293 also n Integrated Signature Resistor includes a power good output, onboard signature resistor, n External Hot Swap N-Channel MOSFET for Lowest undervoltage lockout, and thermal protection. Start-up Power Dissipation and Highest System Efficiency inrush current is adjustable with an external capacitor. n Configurable Aux Power Support as Low as 9V Auxiliary power override is supported as low as 9V with n Pin Compatible with LT4275A/B/C and LT4294 the AUX pin. n Available in 10-Lead MSOP and 3mm 3mm The LT4293 can be configured to support all possible DFNPackages ++ LTPoE , 802.3bt, 802.3at and 802.3af power levels with external component changes. Pin-for-pin compat- APPLICATIONS ibility with the LT4275 and LT4294 family of PD Interface n ++ High Power Wireless Data Systems Controllers enables easy migration between LTPoE PDs n Outdoor Security Camera Equipment and IEEE 802.3bt-compliant PDs. n Commercial and Public Information Displays All registered trademarks and trademarks are the property of their respective owners. n High Temperature Industrial Applications TYPICAL APPLICATION ++ SINGLE-SIGNATURE LTPoE /IEEE 802.3bt Single-Signature Powered Device Interface POWER CLASSIFICATION (AT PD INPUT) V (9V TO 60V) AUX + ++ CLASS LTPoE IEEE 802.3bt C PORT PSMN040-100MSE 0 13W 13W ~ + DATA C PD 1 3.84W 3.84W V PORT PAIR 0.1F 3.3k ~ 2 6.49W 6.49W V 47nF IN 3 13W 13W ~ + ISOLATED + SPARE POWER 4 25.5W 25.5W PAIR VPORT HSGATE HSSRC V SUPPLY OUT ~ 5 38.7W 40W AUX PWRGD RUN 6 52.7W 51W LT4293 RCLASS 7 70W 62W ++ RCLASS PSE TYPE OPTO T2P 8 90W 71.3W (TO P) GND ++ R R CLS CLS 4293 TA01a Rev. 0 1 Document Feedback For more information www.analog.comLT4293 ABSOLUTE MAXIMUM RATINGS (Notes 1, 3) VPORT, HSSRC Voltages ......................... 0.3V to 100V Operating Junction Temperature Range (Note 4) HSGATE Current.................................................. 20mA LT4293I ................................................40C to 85C ++ RCLASS, RCLASS LT4293H ............................................ 40C to 125C Voltages .......................... 0.3V to 8V (and VPORT) Storage Temperature Range .................. 65C to 150C AUX Current ........................................................ 1.4mA Lead Temperature T2P, PWRGD Voltage ............................... 0.3V to 100V (Soldering, 10 sec.) ..................... 300C (MSOP Only) T2P, PWRGD Current ...............................................5mA PIN CONFIGURATION TOP VIEW TOP VIEW GND 1 10 VPORT GND 1 10 VPORT AUX 2 9 HSGATE AUX 2 9 HSGATE 11 RCLASS 3 8 HSSRC RCLASS 3 8 HSSRC GND ++ RCLASS 4 7 PWRGD ++ RCLASS 4 7 PWRGD GND 5 6 T2P GND 5 6 T2P MS PACKAGE 10-LEAD PLASTIC MSOP DD PACKAGE T = 150C, = 45C/W JMAX JC 10-LEAD (3mm 3mm) PLASTIC DFN T = 150C, = 5C/W JMAX JC EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB GND ORDER INFORMATION TUBE TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT4293IDD PBF LT4293IDD TRPBF LHJX 10-Lead (3mm 3mm) Plastic DFN 40C to 85C LT4293HDD PBF LT4293HDD TRPBF LHJX 10-Lead (3mm 3mm) Plastic DFN 40C to 125C LT4293IMS PBF LT4293IMS TRPBF LTHJY 10-Lead Plastic MSOP 40C to 85C LT4293HMS PBF LT4293HMS TRPBF LTHJY 10-Lead Plastic MSOP 40C to 125C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. ELECTRICAL CHARACTERISTICSThe l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T = 25C. (Note 3) A SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VPORT Operating Input Voltage At VPORT Pin l 60 V V VPORT Signature Range At VPORT Pin l 1.5 10 V SIG l V VPORT Classification Range At VPORT Pin 12.5 21 V CLASS V VPORT Mark Range At VPORT Pin, Preceded by V l 5.6 10 V MARK CLASS l VPORT Aux Mode Range At VPORT Pin, AUX > V 8 60 V AUXT Signature/Class Hysteresis Window l 1.0 V Rev. 0 2 For more information www.analog.com