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L4977A from ST,ST Microelectronics

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L4977A

Manufacturer: ST

7A SWITCHING REGULATOR

Partnumber Manufacturer Quantity Availability
L4977A ST 57 In Stock

Description and Introduction

7A SWITCHING REGULATOR The L4977A is a switching regulator IC manufactured by STMicroelectronics. Below are the factual details from Ic-phoenix technical data files:

### **Manufacturer:**  
STMicroelectronics  

### **Specifications:**  
- **Output Voltage:** Adjustable from 3.3V to 50V  
- **Output Current:** Up to 7A  
- **Input Voltage Range:** 8V to 55V  
- **Switching Frequency:** Adjustable up to 300kHz  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +150°C  
- **Protection Features:** Overcurrent, Overtemperature, Undervoltage Lockout (UVLO)  

### **Descriptions:**  
The L4977A is a step-down (buck) switching regulator designed for high-efficiency DC-DC conversion. It integrates a power MOSFET and control circuitry, making it suitable for industrial, automotive, and power supply applications.  

### **Features:**  
- **High Efficiency:** Minimizes power loss with synchronous rectification.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Thermal Shutdown:** Protects the device from overheating.  
- **Current Mode Control:** Ensures stable operation under varying loads.  
- **Low Dropout Operation:** Maintains regulation even with low input-output differentials.  

For exact performance characteristics, refer to the official STMicroelectronics datasheet.

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