300/500mA LOW DROPOUT LINEAR VOLTAGE REGULATORS The part **UR133** is a **voltage regulator** manufactured by **STMicroelectronics**.  

### **Specifications:**  
- **Output Voltage:** 3.3V (fixed)  
- **Output Current:** Up to 1.5A  
- **Input Voltage Range:** Up to 20V  
- **Dropout Voltage:** Typically 1.3V at full load  
- **Line Regulation:** 0.2% (typical)  
- **Load Regulation:** 0.4% (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-220 (through-hole)  

### **Descriptions and Features:**  
- **Low Dropout (LDO) regulator**  
- **Thermal shutdown and current limit protection**  
- **Stable with low-ESR capacitors**  
- **Suitable for industrial and automotive applications**  
- **High ripple rejection ratio**  

This regulator is designed for applications requiring a stable 3.3V supply with high efficiency and reliability.