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L4957AD3.3 from ST,ST Microelectronics

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L4957AD3.3

Manufacturer: ST

UP TO 5A ULTRA LOW DROP OUPUT LINEAR REGULATOR

Partnumber Manufacturer Quantity Availability
L4957AD3.3,L4957AD33 ST 32 In Stock

Description and Introduction

UP TO 5A ULTRA LOW DROP OUPUT LINEAR REGULATOR The part **L4957AD3.3** is a **3.3V low-dropout (LDO) voltage regulator** manufactured by **STMicroelectronics (ST)**. Below are its key specifications, descriptions, and features based on available data:

### **Specifications:**
- **Output Voltage:** 3.3V (fixed)  
- **Output Current:** Up to **1.5A**  
- **Dropout Voltage:** Typically **0.5V** at full load  
- **Input Voltage Range:** **4.5V to 28V**  
- **Line Regulation:** **0.015% (typ)**  
- **Load Regulation:** **0.1% (typ)**  
- **Quiescent Current:** **10mA (typ)**  
- **Operating Temperature Range:** **-40°C to +125°C**  
- **Package:** **TO-220-5 (Multiwatt-5)**  

### **Descriptions:**
- The **L4957AD3.3** is a **monolithic linear regulator** designed for high-current applications.  
- It includes **thermal shutdown, short-circuit protection, and overcurrent protection** for reliability.  
- Suitable for **automotive, industrial, and consumer electronics** applications.  

### **Features:**
- **Low dropout voltage** for efficient power conversion.  
- **Internal current and thermal limiting** for protection.  
- **Fast transient response** for stable output.  
- **No external components required** for basic operation (except input/output capacitors).  
- **Reverse polarity protection** (when used with an external diode).  

For further details, refer to the **official STMicroelectronics datasheet**.

Application Scenarios & Design Considerations

UP TO 5A ULTRA LOW DROP OUPUT LINEAR REGULATOR

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