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L5973AD from ST,ST Microelectronics

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L5973AD

Manufacturer: ST

2A SWITCH STEP DOWN SWITCHING REGULATOR

Partnumber Manufacturer Quantity Availability
L5973AD ST 4480 In Stock

Description and Introduction

2A SWITCH STEP DOWN SWITCHING REGULATOR The L5973AD is a step-down switching regulator manufactured by STMicroelectronics. Here are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 4.4V to 36V  
- **Output Voltage Range:** Adjustable from 1.235V to 35V  
- **Output Current:** Up to 2.5A  
- **Switching Frequency:** 250kHz (fixed)  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +150°C (junction temperature)  
- **Package:** SO-8  

### **Descriptions:**  
- The L5973AD is a monolithic step-down switching regulator with an internal power switch.  
- It is designed for high-efficiency DC-DC conversion applications.  
- Includes built-in protection features such as thermal shutdown, current limiting, and undervoltage lockout (UVLO).  

### **Features:**  
- **Internal Power MOSFET:** Reduces external component count.  
- **Adjustable Output Voltage:** Set via an external resistor divider.  
- **Soft-Start Function:** Limits inrush current during startup.  
- **Synchronization Capability:** Can be synchronized with an external clock.  
- **Low Dropout Operation:** Allows operation with small input-output differentials.  
- **Current Mode Control:** Ensures stable operation and fast transient response.  

The L5973AD is commonly used in automotive, industrial, and consumer electronics applications requiring efficient power conversion.

Application Scenarios & Design Considerations

2A SWITCH STEP DOWN SWITCHING REGULATOR

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