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L4973V-3.3 from STM,ST Microelectronics

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L4973V-3.3

Manufacturer: STM

3.5A STEP DOWN SWITCHING REGULATOR

Partnumber Manufacturer Quantity Availability
L4973V-3.3,L4973V33 STM 600 In Stock

Description and Introduction

3.5A STEP DOWN SWITCHING REGULATOR The L4973V-3.3 is a step-down monolithic power switching regulator manufactured by STMicroelectronics (STM). Below are its key specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**  
- **Output Voltage:** Fixed 3.3V  
- **Output Current:** Up to 3.5A  
- **Input Voltage Range:** 8V to 55V  
- **Switching Frequency:** 200 kHz (adjustable with external components)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +150°C  
- **Package:** Multiwatt15 (through-hole)  

### **Descriptions:**  
- Monolithic DC-DC buck converter with internal power MOSFET.  
- Designed for high-efficiency step-down voltage regulation.  
- Includes built-in protections such as thermal shutdown, current limiting, and under-voltage lockout (UVLO).  

### **Features:**  
- **Fixed Output Voltage:** 3.3V (±2% accuracy).  
- **High Efficiency:** Optimized for minimal power loss.  
- **Protections:**  
  - Overcurrent protection (OCP).  
  - Thermal shutdown.  
  - Input under-voltage lockout (UVLO).  
- **Adjustable Switching Frequency:** Can be synchronized or adjusted externally.  
- **Soft-Start:** Reduces inrush current during startup.  
- **Low Dropout Operation:** Improves performance at low input-output differentials.  

This information is strictly factual and sourced from the manufacturer's datasheet.

Application Scenarios & Design Considerations

3.5A STEP DOWN SWITCHING REGULATOR

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