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LTC4267IGN-1 from LT

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LTC4267IGN-1

Manufacturer: LT

Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator

Partnumber Manufacturer Quantity Availability
LTC4267IGN-1,LTC4267IGN1 LT 94 In Stock

Description and Introduction

Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator The LTC4267IGN-1 is a Power over Ethernet (PoE) interface controller manufactured by Linear Technology (now part of Analog Devices). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** Linear Technology (Analog Devices)  
- **Part Number:** LTC4267IGN-1  
- **Package:** 24-Lead SSOP  
- **Operating Temperature Range:** -40°C to +85°C  
- **Input Voltage Range:** 36V to 57V (PoE compliant)  
- **Classification:** IEEE 802.3af/at compliant  
- **Power Dissipation:** Up to 25.5W (Class 4)  
- **Integrated Switching Regulator:** Yes  
- **Detection and Classification:** Automatic  

### **Description:**
The LTC4267IGN-1 is a single-port Power Sourcing Equipment (PSE) controller designed for PoE applications. It provides detection, classification, and power management for powered devices (PDs) in compliance with IEEE 802.3af/at standards. The device includes an integrated switching regulator for efficient power delivery.

### **Features:**
- **IEEE 802.3af/at Compliant:** Supports PoE and PoE+ standards.  
- **Automatic PD Detection and Classification:** Ensures safe power delivery.  
- **Integrated 25kΩ Detection Signature Resistor:** Simplifies design.  
- **Programmable Current Limit:** Adjustable for different power levels.  
- **Power Good Output:** Indicates valid power delivery.  
- **Thermal Shutdown Protection:** Prevents overheating.  
- **Low Power Dissipation:** High efficiency for reduced heat.  
- **Single 3.3V Supply Operation:** Simplifies power requirements.  

This information is based solely on the manufacturer's datasheet and technical documentation.

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