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L4976 from ST,ST Microelectronics

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L4976

Manufacturer: ST

1A STEP DOWN SWITCHING REGULATOR

Partnumber Manufacturer Quantity Availability
L4976 ST 1876 In Stock

Description and Introduction

1A STEP DOWN SWITCHING REGULATOR The L4976 is a monolithic step-down switching regulator manufactured by STMicroelectronics. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Manufacturer:**  
- **STMicroelectronics (ST)**  

### **Specifications:**  
- **Output Voltage:** Adjustable from 3.3V to 50V  
- **Output Current:** Up to 2.5A  
- **Input Voltage Range:** 8V to 55V  
- **Switching Frequency:** 200 kHz (fixed)  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +150°C (junction temperature)  
- **Package:** Multiwatt15 (vertical) or PowerSO20 (surface mount)  

### **Descriptions:**  
- The L4976 is a step-down (buck) switching regulator designed for high-efficiency DC-DC conversion.  
- It includes a DMOS power switch, PWM control, and protection features.  
- Suitable for industrial, automotive, and power supply applications.  

### **Features:**  
- **Internal Power DMOS Transistor** (2.5A capability)  
- **Voltage Feed-Forward** for improved line regulation  
- **Soft-Start Function** to limit inrush current  
- **Current Limiting & Thermal Shutdown** for protection  
- **Undervoltage Lockout (UVLO)** to prevent malfunction at low input voltage  
- **Sync Capability** for external clock synchronization  

For detailed electrical characteristics and application circuits, refer to the official STMicroelectronics datasheet.

Application Scenarios & Design Considerations

1A STEP DOWN SWITCHING REGULATOR

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