LTC9101 Series

8/16-Port IEEE 802.3at PoE PSE Controller with Power Management and LED Control

Manufacturer: Analog Devices Inc./Maxim Integrated

Catalog

8/16-Port IEEE 802.3at PoE PSE Controller with Power Management and LED Control

Part	Current - Supply	Standards	Mounting Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Number of Channels	Package / Case	Type	Number of Channels [custom]	Power - Max [Max]	Number of Channels [custom]
Analog Devices Inc./Maxim Integrated LTC9101AUF-3#PBF	40 mA	802.3at (PoE)	Surface Mount	51 V	57 V	24-QFN (4x4)	85 C	-40 ¯C	16	24-WFQFN Exposed Pad	Controller (PSE)
Analog Devices Inc./Maxim Integrated LTC9101AUF-3#TRPBF	40 mA	802.3at (PoE)	Surface Mount	51 V	57 V	24-QFN (4x4)	85 C	-40 ¯C	16	24-WFQFN Exposed Pad	Controller (PSE)
Analog Devices Inc./Maxim Integrated LTC9101AUF-1#TRPBF	11 mA	802.3af (PoE) 802.3at (PoE+) 802.3bt	Surface Mount	3 V	3.6 V	24-QFN (4x4)	85 C	-40 ¯C		24-WFQFN Exposed Pad	Controller (PSE)	48	71.3 W
Analog Devices Inc./Maxim Integrated LTC9101AUF-2#TRPBF	40 mA	802.3af (PoE) 802.3at (PoE+) 802.3bt	Surface Mount	53 V	57 V	24-QFN (4x4)	85 C	-40 ¯C		24-WFQFN Exposed Pad	Controller (PSE)			24
Analog Devices Inc./Maxim Integrated LTC9101AUF-2#PBF	40 mA	802.3af (PoE) 802.3at (PoE+) 802.3bt	Surface Mount	53 V	57 V	24-QFN (4x4)	85 C	-40 ¯C		24-WFQFN Exposed Pad	Controller (PSE)			24

Catalog

8/16-Port IEEE 802.3at PoE PSE Controller with Power Management and LED Control

Description

The LTC9101-1/LTC9102/LTC9103 chipset is a 48-port power sourcing equipment (PSE) controller designed for use in IEEE 802.3at Type 2, 802.3bt Type 3 and 4 compliant Power over Ethernet (PoE) systems. The LTC9101-1/LTC9102/LTC9103 is designed to power compliant 802.3af, 802.3at, and 802.3bt PDs. The LTC9101-1/LTC9102/LTC9103 chipset delivers lowest-in-industry heat dissipation by utilizing low-RDS(ON)external MOSFETs and 0.1Ω sense resistance per power channel. A transformer-isolated communication protocol replaces expensive opto-couplers and complex isolated 3.3V supply, resulting in significant BOM cost savings.Advanced power management features include per-port 14‑bit current/power monitoring, programmable current/power limits, and versatile fast shut-down of preselected ports. An advanced power management host software layer is available. PD detection uses a proprietary multipoint detection mechanism ensuring excellent immunity from false PD identification. Autoclass and 5-event physical classification are supported. The LTC9101-1/LTC9102/LTC9103 includes an I2C serial interface operable up to 1MHz. The LTC9101-1/LTC9102/LTC9103 is pin or I2C programmable to negotiate PD delivered power up to 71.3W.APPLICATIONSPoE PSE Switches/Routers and Midspans