UP TO 5A ULTRA LOW DROP OUPUT LINEAR REGULATOR The part **L4957AD2.5** is a **low-dropout (LDO) voltage regulator** manufactured by **STMicroelectronics (ST)**.  

### **Key Specifications:**  
- **Output Voltage:** 2.5V (fixed)  
- **Output Current:** Up to 150mA  
- **Dropout Voltage:** Typically 0.4V at full load  
- **Input Voltage Range:** Up to 28V  
- **Low Quiescent Current:** Typically 1.5mA  
- **Protection Features:**  
  - Short-circuit protection  
  - Thermal shutdown  
- **Package:** TO-92 (through-hole)  

### **Features:**  
- Designed for low-power applications  
- Stable with low-ESR ceramic capacitors  
- Suitable for automotive and industrial applications  
- High accuracy (±2% output voltage tolerance)  

This regulator is commonly used in power supply circuits requiring stable, low-noise voltage regulation.  

(Source: STMicroelectronics datasheet)

UP TO 5A ULTRA LOW DROP OUPUT LINEAR REGULATOR