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L4949D

MULTIFUNCTION VERY LOW DROPOUT VOLTAGE REGULATOR

Partnumber Manufacturer Quantity Availability
L4949D 222 In Stock

Description and Introduction

MULTIFUNCTION VERY LOW DROPOUT VOLTAGE REGULATOR The **L4949D** is a low-dropout (LDO) voltage regulator manufactured by **STMicroelectronics**. Below are its key specifications, descriptions, and features based on factual data:

### **Manufacturer:**  
STMicroelectronics  

### **Specifications:**  
- **Output Voltage:** 5V (fixed)  
- **Output Current:** Up to 250mA  
- **Dropout Voltage:** 0.5V (typical at full load)  
- **Input Voltage Range:** Up to 30V  
- **Line Regulation:** 10mV (typical)  
- **Load Regulation:** 15mV (typical)  
- **Quiescent Current:** 1.5mA (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-220, D²PAK, SO-8  

### **Descriptions:**  
- The **L4949D** is a monolithic integrated LDO voltage regulator designed for applications requiring stable 5V power.  
- It includes **overcurrent protection, thermal shutdown, and short-circuit protection** for enhanced reliability.  
- Suitable for automotive, industrial, and consumer electronics.  

### **Features:**  
- **Low Dropout Voltage** (0.5V typical at 250mA)  
- **Very Low Quiescent Current**  
- **Thermal Protection** with hysteresis  
- **Short-Circuit Protected**  
- **Reverse Polarity Protection**  
- **No External Components Required** for fixed output version  

This information is based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

MULTIFUNCTION VERY LOW DROPOUT VOLTAGE REGULATOR

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