300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown The LT1521CS8-5#TR is a low dropout (LDO) voltage regulator manufactured by **Linear Technology** (now part of Analog Devices).  

### **Specifications:**  
- **Output Voltage:** Fixed 5V  
- **Output Current:** 500mA  
- **Dropout Voltage:** 300mV (typical at full load)  
- **Input Voltage Range:** 6V to 20V  
- **Line Regulation:** 0.02% (typical)  
- **Load Regulation:** 0.04% (typical)  
- **Quiescent Current:** 1mA (typical)  
- **Package:** 8-Lead SOIC (SO-8)  
- **Operating Temperature Range:** 0°C to 125°C  
- **Protection Features:** Thermal shutdown, current limit  

### **Descriptions and Features:**  
- **Low Dropout Voltage:** Ensures stable operation with minimal input-output differential.  
- **High Accuracy:** Tight output voltage tolerance (±2%).  
- **Low Quiescent Current:** Improves efficiency in battery-powered applications.  
- **Thermal Protection:** Prevents damage from overheating.  
- **Current Limiting:** Protects the regulator and load from excessive current.  
- **Stable with Low-ESR Capacitors:** Works with ceramic or tantalum capacitors.  
- **Applications:** Battery-powered devices, portable electronics, instrumentation, and industrial systems.  

This regulator is designed for high-performance, low-noise applications requiring a stable 5V supply.

300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown