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L4979D from ST,ST Microelectronics

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L4979D

Manufacturer: ST

LOW DROP VOLTAGE REGULATOR

Partnumber Manufacturer Quantity Availability
L4979D ST 3983 In Stock

Description and Introduction

LOW DROP VOLTAGE REGULATOR The **L4979D** is a **step-down monolithic power switching regulator** manufactured by **STMicroelectronics (ST)**.  

### **Key Specifications:**  
- **Input Voltage Range:** 8V to 55V  
- **Output Voltage:** Adjustable from 3.3V to 50V  
- **Output Current:** Up to 2.5A  
- **Switching Frequency:** 200kHz (fixed)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +150°C (junction temperature)  
- **Package:** **SO-20 (PowerDIP-20)**  

### **Features:**  
- **Current Mode Control** for improved stability  
- **Soft-Start Function** to limit inrush current  
- **Undervoltage Lockout (UVLO)** for input voltage protection  
- **Thermal Shutdown Protection**  
- **Overcurrent Protection** with hiccup mode  
- **Synchronizable Switching Frequency**  
- **Adjustable Output Voltage via external resistors**  
- **Low Dropout Operation**  

### **Applications:**  
- Industrial power supplies  
- Automotive systems  
- Battery chargers  
- Distributed power systems  

The L4979D is designed for **high-efficiency DC-DC conversion** in demanding environments.  

Would you like additional details on pin configuration or application notes?

Application Scenarios & Design Considerations

LOW DROP VOLTAGE REGULATOR

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