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L4976D from ST,ST Microelectronics

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L4976D

Manufacturer: ST

1A STEP DOWN SWITCHING REGULATOR

Partnumber Manufacturer Quantity Availability
L4976D ST 611 In Stock

Description and Introduction

1A STEP DOWN SWITCHING REGULATOR The L4976D is a switching regulator IC manufactured by STMicroelectronics. Below are the factual details about this component:

### **Manufacturer**: STMicroelectronics  
### **Part Number**: L4976D  

### **Specifications**:  
- **Type**: Step-Down (Buck) Switching Regulator  
- **Output Voltage**: Adjustable from 3.3V to 50V  
- **Output Current**: Up to 1.5A  
- **Input Voltage Range**: 8V to 55V  
- **Switching Frequency**: 200 kHz (fixed)  
- **Efficiency**: Up to 90%  
- **Operating Temperature Range**: -40°C to +150°C  
- **Package**: SO-20 (PowerSO-20)  

### **Descriptions**:  
The L4976D is a monolithic step-down switching regulator designed for high-efficiency DC-DC conversion. It integrates a power MOSFET and control circuitry, making it suitable for applications requiring a regulated output from a higher input voltage.  

### **Features**:  
- **Adjustable Output Voltage** (via external resistors)  
- **Internal Current Limiting** for overcurrent protection  
- **Thermal Shutdown** for overtemperature protection  
- **Soft-Start Function** to reduce inrush current  
- **Under-Voltage Lockout (UVLO)** for input voltage monitoring  
- **Synchronous Rectification** for improved efficiency  
- **Low Standby Current** in shutdown mode  

This information is based on STMicroelectronics' official datasheet for the L4976D.

Application Scenarios & Design Considerations

1A STEP DOWN SWITCHING REGULATOR

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