Analog Devices Inc. LTC9111 Industrial SPoE PD Controllers

Analog Devices Inc. LTC9111 Industrial Single-Pair Power over Ethernet (SPoE) Powered Device (PD) Controllers are IEEE 802.3cg compliant devices integrated with 3.5V standby regulators. These controllers operate at a wide input voltage ranging from 2.3V to 60V and support the Serial Communication Classification Protocol (SCCP). This SCCP-based classification ensures full operating voltage is applied by the Power Sourcing Equipment (PSE) only when a valid PD is connected. The LTC9111 controllers drive two external N-channel MOSFET switches during classification with the micropower operation to minimize reservoir capacitor requirements. These LTC9111 controllers are ideally used in building automation, factory automation, security systems, and traffic control systems.

Features

IEEE 802.3cg compliant
Wide 2.3V to 60V input voltage range
Supports Serial Communication Classification Protocol (SCCP)
Wakeup signature
Integrated 3.5V standby regulator

150µA maximum current during classification
Drives low-side bridge MOSFETs for polarity correction
Charge pump enhances an external N-Channel MOSFET
Pin programmable class configuration
12-Pin MSOP and DFN 4mm × 3mm packages

Applications

Building automation
Factory automation

Security systems
Traffic control systems

Specifications

-2V to 100V maximum supply voltage range
Maximum input voltages
- -5V to 100V for SNS1 and SNS2
- -0.3V to 5.5V for CLASSC, CLASSV, and SCCP
Temperature ranges:
- -40°C to +150°C operating junction
- -65°C to +150°C storage

Maximum output voltages:
- -0.3V to 8V for LGATE1 and LGATE2
- -2V to 100V for OUT
- -0.3V to 10V GATE to OUT
- -0.3V to 100V for GATE
- -0.3V to 5.5V for EN and STBY

Analog Devices Inc. LTC9111 Industrial SPoE PD Controllers

Features

Applications

Specifications

Videos

Typical Application Circuit

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