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LTC4274A - Single PoE/PoE+/LTPoE++ PSE Controller

General Description

The LTC®4274A is a single Power Sourcing Equipment (PSE) controller capable of delivering up to 90W of LTPoE++ power to a compatible LTPoE++ Powered Device (PD).

Key Features

  • nn Compliant with IEEE 802.3at Type 1 and 2 nn Low Power Dissipation nn 0.25Ω Sense Resistance Per Channel nn Very High Reliability 4-Point PD Detection nn 2-Point Forced Voltage nn 2-Point Forced Current nn High Capacitance Legacy Device Detection nn 1MHz I2C Compatible Serial Control Interface nn Midspan Backoff Timer nn Supports 2-Pair and 4-Pair Output Power nn Available in Multiple Power Grades nn LTC4274A-1: LTPoE++™ 38.7W nn LTC4274A-2: LTPoE++ 52.7W nn LTC4274A-3: LTPoE++ 70W nn LTC4274A.

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Other Datasheets by Linear Technology (now Analog Devices)

Part Number Description
LTC4274 Single PoE+PSE Controller
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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FEATURES nn Compliant with IEEE 802.3at Type 1 and 2 nn Low Power Dissipation nn 0.25Ω Sense Resistance Per Channel nn Very High Reliability 4-Point PD Detection nn 2-Point Forced Voltage nn 2-Point Forced Current nn High Capacitance Legacy Device Detection nn 1MHz I2C Compatible Serial Control Interface nn Midspan Backoff Timer nn Supports 2-Pair and 4-Pair Output Power nn Available in Multiple Power Grades nn LTC4274A-1: LTPoE++™ 38.7W nn LTC4274A-2: LTPoE++ 52.7W nn LTC4274A-3: LTPoE++ 70W nn LTC4274A-4: LTPoE++ 90W nn LTC4274C: PoE 13W nn Available in 38-Lead 5mm × 7mm QFN Package APPLICATIONS nn LTPoE++ PSE Switches/Routers nn LTPoE++ PSE Midspans nn IEEE 802.3at Type 1 PSE Switches/Routers nn IEEE 802.