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MAX5981BETE+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX5981BETE+

Manufacturer: MAXIM

IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with Integrated Power MOSFET

Partnumber Manufacturer Quantity Availability
MAX5981BETE+,MAX5981BETE MAXIM 2 In Stock

Description and Introduction

IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with Integrated Power MOSFET The MAX5981BETE+ is a Power over Ethernet (PoE) PD (Powered Device) interface controller manufactured by Maxim Integrated (now part of Analog Devices).  

### **Specifications:**  
- **Manufacturer:** Maxim Integrated (Analog Devices)  
- **Part Number:** MAX5981BETE+  
- **Package:** 16-TQFN (3x3mm)  
- **Operating Voltage Range:** 2.7V to 57V  
- **IEEE 802.3af/at Compliant:** Yes  
- **Integrated Switching Regulator:** Yes (DC-DC converter)  
- **Output Voltage:** Adjustable (3.3V, 5V, or other via external resistors)  
- **Maximum Output Current:** Up to 600mA  
- **Power Classification:** Supports automatic detection and classification (Class 0–4)  
- **Thermal Shutdown Protection:** Yes  
- **Undervoltage Lockout (UVLO):** Yes  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The MAX5981BETE+ is a PoE PD controller with an integrated switching regulator, designed to extract power from Ethernet cables in compliance with IEEE 802.3af/at standards. It provides a regulated output voltage for connected devices while supporting detection, classification, and power management.  

### **Features:**  
- **Integrated DC-DC Converter:** Eliminates the need for an external regulator.  
- **Wide Input Voltage Range:** Supports both 802.3af (37V–57V) and 802.3at (42.5V–57V) standards.  
- **Programmable Output Voltage:** Adjustable via external resistors.  
- **Low Standby Power Consumption:** Optimized for energy efficiency.  
- **Robust Protection:** Includes thermal shutdown, UVLO, and inrush current limiting.  
- **Small Footprint:** 16-TQFN package for space-constrained designs.  

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

Application Scenarios & Design Considerations

IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with Integrated Power MOSFET

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