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MAX5943AEEE+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX5943AEEE+

Manufacturer: MAXIM

FireWire Current Limiter and Low-Drop ORing Switch Controller

Partnumber Manufacturer Quantity Availability
MAX5943AEEE+,MAX5943AEEE MAXIM 54 In Stock

Description and Introduction

FireWire Current Limiter and Low-Drop ORing Switch Controller The **MAX5943AEEE+** is a Power over Ethernet (PoE) interface controller manufactured by **MAXIM** (now part of Analog Devices). Below are its key specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** MAXIM (Analog Devices)  
- **Part Number:** MAX5943AEEE+  
- **Package:** 16-QSOP (EE)  
- **Operating Voltage Range:** 36V to 57V (IEEE 802.3af compliant)  
- **Power Dissipation:** Up to 12.95W (Class 0-3)  
- **Detection Voltage:** 2.7V to 10V  
- **Classification Current:** Programmable per IEEE 802.3af  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**
The MAX5943AEEE+ is a **PoE PD (Powered Device) controller** designed for IEEE 802.3af-compliant Power Sourcing Equipment (PSE). It integrates detection, classification, and undervoltage lockout (UVLO) functions, enabling safe power negotiation between PSE and PD.  

### **Features:**
- **IEEE 802.3af Compliance:** Supports detection, classification, and power management.  
- **Programmable Classification:** Adjustable classification current for power negotiation.  
- **Integrated Power MOSFET:** Includes an internal switching FET for efficient power transfer.  
- **Thermal Protection:** Prevents overheating during operation.  
- **Under-Voltage Lockout (UVLO):** Ensures safe operation within voltage limits.  
- **Low-Power Mode:** Reduces power consumption when inactive.  
- **Compact Package:** 16-pin QSOP for space-constrained applications.  

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

Application Scenarios & Design Considerations

FireWire Current Limiter and Low-Drop ORing Switch Controller

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