LTC9101-1/ LTC9102/LTC9103 48-Port IEEE 802.3bt PoE PSE Controller FEATURES DESCRIPTION n Fully Compliant IEEE 802.3bt Type 3 and 4 PSE The LTC 9101-1/LTC9102/LTC9103 chipset is a 48-port n Fully Compliant IEEE 802.3at Type 2 PSE power sourcing equipment (PSE) controller designed for use n Software-Compatible with LTC4291-1/LTC4292 in IEEE 802.3at Type 2, 802.3bt Type 3 and 4 compliant Power n Up to 48 PSE Ports with One Power Channel per Port over Ethernet (PoE) systems. The LTC9101-1/LTC9102/ n Up to 24 PSE Ports with Two Power Channels per Port LTC9103 is designed to power compliant 802.3af, 802.3at, n ECC-Protected eFlash and Data RAMs and 802.3bt PDs. The LTC9101-1/LTC9102/LTC9103 chip- n Low Power Path Dissipation per Channel set delivers lowest-in-industry heat dissipation by utilizing n 100m Sense Resistance low-R external MOSFETs and 0.1 sense resistance DS(ON) n 30m or Lower MOSFET R per power channel. Atransformer-isolated communication DS(ON) n Chipset Provides Electrical Isolation protocol replaces expensive opto-couplers and complex iso- n Eliminates Optos and Isolated 3.3V Supply lated 3.3V supply, resulting in significant BOM cost savings. n Very High Reliability Multipoint PD Detection Advanced power management features include per-port n Connection Check Distinguishes Single- 14-bit current/power monitoring, programmable current/ Signature and Dual-Signature PDs power limits, and versatile fast shut-down of preselected n Continuous Per-Port Power and Current Monitoring ports. An advanced power management host software 2 n 1MHz I C Compatible Serial Control Interface layer is available. PD detection uses a proprietary multi- 2 n Pin or I C Programmable PD Power point detection mechanism ensuring excellent immunity n Available in 24-Lead 4mm 4mm (LTC9101-1) and from false PD identification. Autoclass and 5-event physi- a 64-Lead 7mm 11mm (LTC9102/LTC9103) QFN cal classification are supported. The LTC9101-1/LTC9102/ Packages 2 LTC9103 includes an I C serial interface operable up to 2 1MHz. The LTC9101-1/LTC9102/LTC9103 is pin or I C pro- APPLICATIONS grammable to negotiate PD delivered power up to 71.3W. n PoE PSE Switches/Routers and Midspans All registered trademarks and trademarks are the property of their respective owners. TYPICAL APPLICATION >47F ID:11b ID:10b 0.1F 3.3V V EE ID:01b ID:00b 1 1F V DD 100V CFG2 TX1 V EE 0.1F CFG1 S1B 100V CFG0 AGND 2 ISOLATION OUT1 AUTO 3 RESET CPD CPA GATE1 TX2 MSD SENSE1 4PVALID 6 2 LTC9102/LTC9103 (NO I C 0.1 4 ISOLATION LTC9101-1 CND CNA REQUIRED) VSSK1 V TX3 EE FLASH 0.1F INT S1B 5 100V OUT2 DPD DPA SCL SDAIN 7 GATE2 SDAOUT TX4 SENSE2 DND DNA 8 AD2 0.1 4 AD3 1000pF 1000BASE-T RJ45 VSSK2 3 2kV V DGND EE 2 V EE ONE 4-PAIR PORT SHOWN 1 V 9101123 TA01a EE V EE Rev. 0 1 Document Feedback For more information www.analog.comLTC9101-1/ LTC9102/LTC9103 ABSOLUTE MAXIMUM RATINGS (Note 1) (Notes 1, 4) LTC9101-1 LTC9102/LTC9103 Supply Voltages (with respect to DGND) ) Supply Voltages (with respect to V EE V ...................................................... 0.3V to 3.6V ................................................... 0.3V to 80V AGND DD CAP1, CAP2 .........................................0.3V to 1.32V ................................................. 0.3V to 80V PWRIN Digital Pins CAP3, CAP4 ........................................... 0.3V to 5V ADn, AUTO, CFGn, MSD, SDAIN, SDAOUT, ................................................ 0.3V to 0.3V VSSKn SCL, RESET, INT, 4PVALID ........ 0.3V to V + 0.3V Analog Pins DD Analog Pins ...................................... 20V to 80V SENSEn, OUTn CPD, CND, DPD, DND ............... 0.3V to V + 0.3V ........................... 0.3V to 80V GATEn, IDn, PWRMD DD Operating Ambient Temperature ............. 40C to 85C ...............0.3V to CAP3 + 0.3V CPA, CNA, DPA, DNA Operating Junction Temperature (Note 2) .. 40C to 125C EXT3 ...................................................... 0.3V to 30V Storage Temperature ............................ 65C to 150C Operating Ambient Temperature ..............40C to 85C Operating Junction Temperature (Note 2) ...40C to 125C Storage Temperature ............................. 65C to 150C Rev. 0 2 For more information www.analog.com