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TPS2377D from TI,Texas Instruments

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TPS2377D

Manufacturer: TI, TI-BB

IEEE 802.3af PoE Powered Device Controllers

Partnumber Manufacturer Quantity Availability
TPS2377D TI, TI-BB 85 In Stock

Description and Introduction

IEEE 802.3af PoE Powered Device Controllers The TPS2377D is a Power over Ethernet (PoE) Powered Device (PD) interface controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Input Voltage Range:** 36V to 57V (IEEE 802.3af/at compliant)  
- **Output Voltage:** Adjustable via external components  
- **Maximum Power:** Supports up to 25.5W (IEEE 802.3at Type 1)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOIC-8  
- **Detection & Classification:** Compliant with IEEE 802.3af/at standards  
- **Inrush Current Limiting:** Programmable  
- **Integrated Switching Regulator Controller:** Supports flyback, forward, or buck topologies  
- **Undervoltage Lockout (UVLO):** Adjustable  

### **Descriptions:**  
The TPS2377D integrates a PD interface and a DC-DC controller, simplifying PoE system design. It provides detection, classification, and inrush current control for IEEE 802.3af/at compliance. The device supports multiple converter topologies, enabling flexible power supply designs.  

### **Features:**  
- IEEE 802.3af/at compliant PD interface  
- Integrated 100V, 0.4Ω power MOSFET  
- Programmable inrush current limiting  
- Supports auxiliary power adapter input (AUX)  
- Thermal shutdown protection  
- Adjustable UVLO and operating voltage range  
- High efficiency with synchronous rectification support  

For more details, refer to the official TI datasheet.

Application Scenarios & Design Considerations

IEEE 802.3af PoE Powered Device Controllers

Alternative Part Number

  • LM5070SD-50 --: Integrated PoE PD controller and DC-DC converter in the same function class, suitable as a functional substitute for PoE powered-device designs.
  • MAX5941AESE+ --: PoE PD interface controller with hot-swap MOSFET and signature resistor, a common cross-vendor alternative for TPS2377-class PD front ends.
  • LTC4267CDHC --: IEEE 802.3af PoE PD interface with integrated switching regulator controller, offering comparable PD interface functionality from a different series.
  • LTC4267CDHC#PBF --: PoE PD interface with integrated switching regulator controller, offering comparable functionality for powered device applications.

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