3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS The part **LD1085D2T33** is manufactured by **STMicroelectronics (ST)**. Here are its specifications, descriptions, and features:  

### **Specifications:**  
- **Output Voltage:** 3.3V (fixed)  
- **Output Current:** Up to 3A  
- **Input Voltage Range:** Up to 30V  
- **Dropout Voltage:** 1.3V (typical at 3A)  
- **Line Regulation:** 0.015% (typical)  
- **Load Regulation:** 0.1% (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** D²PAK (TO-263)  

### **Descriptions:**  
- The LD1085 is a low-dropout (LDO) voltage regulator designed to provide a fixed 3.3V output.  
- It is suitable for applications requiring high current with low dropout voltage.  
- Features built-in thermal shutdown and current limit protection.  

### **Features:**  
- **High Current Capability:** Supports up to 3A output current.  
- **Low Dropout Voltage:** 1.3V at full load.  
- **Thermal Protection:** Includes thermal shutdown for safety.  
- **Short-Circuit Protection:** Built-in current limiting.  
- **Stable with Low-ESR Capacitors:** Works with ceramic or tantalum capacitors.  

This information is based on STMicroelectronics' official documentation.

3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS