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L4973V5.1 from ST,ST,ST Microelectronics

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L4973V5.1

Manufacturer: ST,ST

3.5A STEP DOWN SWITCHING REGULATOR

Partnumber Manufacturer Quantity Availability
L4973V5.1,L4973V51 ST,ST 10000 In Stock

Description and Introduction

3.5A STEP DOWN SWITCHING REGULATOR The **L4973V5.1** is a **5.1V** voltage regulator manufactured by **STMicroelectronics (ST)**.  

### **Key Specifications:**  
- **Output Voltage:** 5.1V (fixed)  
- **Output Current:** Up to **3.5A**  
- **Input Voltage Range:** **8V to 55V**  
- **Dropout Voltage:** Typically **1.5V** at full load  
- **Line Regulation:** ±0.1% (typical)  
- **Load Regulation:** ±0.3% (typical)  
- **Switching Frequency:** Adjustable (up to **300kHz**)  
- **Efficiency:** Up to **90%**  
- **Protection Features:**  
  - **Overcurrent protection**  
  - **Thermal shutdown**  
  - **Soft-start**  
  - **Undervoltage lockout (UVLO)**  

### **Descriptions and Features:**  
- **High-efficiency switching regulator** for step-down (buck) applications.  
- **Monolithic design** with integrated power MOSFET.  
- **Adjustable switching frequency** for optimized performance.  
- **Low standby current** in shutdown mode.  
- **Wide input voltage range** suitable for automotive and industrial applications.  
- **TO-220 package** for efficient thermal dissipation.  
- **Internal current limiting** and **thermal protection** for enhanced reliability.  

This regulator is commonly used in **power supplies, automotive systems, and industrial controls** requiring stable 5.1V output.

Application Scenarios & Design Considerations

3.5A STEP DOWN SWITCHING REGULATOR

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