300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown The LT1521IS8-3 is a low dropout voltage regulator manufactured by Linear Technology (now part of Analog Devices).  

### **Manufacturer Specifications:**  
- **Output Voltage:** 3V (fixed)  
- **Output Current:** 150mA  
- **Dropout Voltage:** 300mV (typical at full load)  
- **Input Voltage Range:** Up to 20V  
- **Line Regulation:** 0.02%/V (typical)  
- **Load Regulation:** 0.05% (typical)  
- **Quiescent Current:** 20µA (typical)  
- **Package:** SO-8  

### **Descriptions and Features:**  
- **Low Dropout Voltage:** Ensures efficient regulation even with small input-output differentials.  
- **Low Quiescent Current:** Ideal for battery-powered applications.  
- **Thermal Overload Protection:** Prevents damage due to excessive heat.  
- **Reverse Battery Protection:** Safeguards against reverse polarity.  
- **Current Limit Protection:** Prevents damage from excessive load currents.  
- **Stable with Low-ESR Capacitors:** Works reliably with ceramic or tantalum output capacitors.  
- **Applications:** Battery-powered devices, portable electronics, and low-power systems.  

This information is based on the manufacturer's datasheet for the LT1521IS8-3.

300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown