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MAX5940DESA+T from MAXIM,MAXIM - Dallas Semiconductor

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MAX5940DESA+T

Manufacturer: MAXIM

IEEE 802.3af PD Interface Controller for Power-Over-Ethernet

Partnumber Manufacturer Quantity Availability
MAX5940DESA+T MAXIM 2500 In Stock

Description and Introduction

IEEE 802.3af PD Interface Controller for Power-Over-Ethernet The MAX5940DESA+T is a power management IC manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Part Number:** MAX5940DESA+T  
- **Package:** 8-SOIC (150mil)  
- **Type:** Power Management IC for Power over Ethernet (PoE)  
- **Operating Voltage Range:** 36V to 57V (IEEE 802.3af compliant)  
- **Output Voltage:** Adjustable  
- **Current Limit:** Programmable  
- **Operating Temperature Range:** -40°C to +85°C  
- **Compliance:** IEEE 802.3af standard  

### **Descriptions:**  
The MAX5940DESA+T is a highly integrated power management IC designed for Power over Ethernet (PoE) applications. It provides a complete interface for a Powered Device (PD) in a PoE system, including detection, classification, and undervoltage lockout (UVLO) functions. It supports IEEE 802.3af compliance, ensuring safe and reliable power delivery over Ethernet cables.  

### **Features:**  
- **Integrated PD Interface:** Includes detection, classification, and inrush current control.  
- **Programmable Current Limit:** Adjustable for different power requirements.  
- **Wide Input Voltage Range:** Supports 36V to 57V for PoE applications.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low-voltage conditions.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Low-Power Mode:** Optimizes efficiency when not in use.  
- **Compact SOIC Package:** Suitable for space-constrained designs.  

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

Application Scenarios & Design Considerations

IEEE 802.3af PD Interface Controller for Power-Over-Ethernet

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