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MAX5949AESA from MAXIM,MAXIM - Dallas Semiconductor

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MAX5949AESA

Manufacturer: MAXIM

-48V Hot-Swap Controllers with External RSENSE

Partnumber Manufacturer Quantity Availability
MAX5949AESA MAXIM 42 In Stock

Description and Introduction

-48V Hot-Swap Controllers with External RSENSE The MAX5949AESA is a power management IC manufactured by Maxim Integrated (now part of Analog Devices). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated (now Analog Devices)  
- **Part Number:** MAX5949AESA  
- **Package:** 8-pin SOIC (Small Outline Integrated Circuit)  
- **Operating Voltage Range:** 36V to 57V (designed for IEEE 802.3af/at compliant Power over Ethernet (PoE) applications)  
- **Output Voltage:** Adjustable  
- **Current Limit:** Programmable  
- **Power Dissipation:** Up to 25.5W (supports PoE+ applications)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The MAX5949AESA is a Power over Ethernet (PoE) interface controller designed for use in Powered Devices (PDs). It integrates detection, classification, and DC-DC converter control for IEEE 802.3af/at compliant PoE systems. It provides a complete solution for PDs requiring power from Ethernet cables.  

### **Features:**  
- **IEEE 802.3af/at Compliant:** Supports detection and classification for PoE and PoE+ applications.  
- **Integrated DC-DC Controller:** Includes PWM controller for flyback or forward converters.  
- **Programmable Current Limit:** Adjustable to meet different power requirements.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within the specified voltage range.  
- **Thermal Protection:** Prevents overheating damage.  
- **Low-Power Detection Mode:** Ensures compatibility with legacy PoE systems.  
- **High Efficiency:** Optimized for power conversion in PoE applications.  

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

Application Scenarios & Design Considerations

-48V Hot-Swap Controllers with External RSENSE

Alternative Part Number

  • TPS2412PWR --: Pin-compatible hot-swap controller with similar ORing/current-limit function and widely available as a direct functional substitute.
  • LTC4357IMS8#PBF --: Ideal diode/hot-swap controller offering comparable protection and current-limit behavior in a similar small package.
  • ISL6146BIRZ --: Hot-swap controller with similar voltage range and fault protection features, suitable as a cross-manufacturer alternative.
  • LTC4211CMS8 --: Hot swap controller with similar function and pin-compatible footprint, widely available and well documented.
  • TPS2491DGSR --: Positive high-voltage hot swap controller offering comparable protection features and a different naming series.
  • ADM1177ARMZ --: Hot swap controller with integrated current sense, suitable as a functional substitute in similar applications.

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