5V/3.3V or Adjustable, Low-Dropout, Low-IQ, 500mA Linear Regulators The MAX603ESA+ is a low-dropout (LDO) linear voltage regulator manufactured by **MAXIM** (now part of Analog Devices).  

### **Specifications:**  
- **Output Voltage Options:** Fixed (e.g., 3.3V, 5V) or adjustable (1.25V to 11.5V).  
- **Output Current:** Up to **500mA**.  
- **Dropout Voltage:** Typically **120mV at 100mA load**.  
- **Input Voltage Range:** Up to **11.5V**.  
- **Quiescent Current:** Typically **85µA**.  
- **Line Regulation:** **0.02%/V**.  
- **Load Regulation:** **0.04%/mA**.  
- **Operating Temperature Range:** **-40°C to +85°C**.  
- **Package:** **8-pin SOIC (ESA+)**.  

### **Descriptions:**  
- Designed for low-power, battery-operated applications.  
- Features **low quiescent current** for improved efficiency.  
- Includes **thermal shutdown** and **current limiting** for protection.  

### **Features:**  
- **Low dropout voltage** for extended battery life.  
- **Low noise** output for sensitive applications.  
- **Stable with low-ESR capacitors** (≥1µF).  
- **Adjustable or fixed output voltage** options.  
- **Thermal shutdown and short-circuit protection**.  

This regulator is commonly used in **portable devices, embedded systems, and power-sensitive applications**.

5V/3.3V or Adjustable, Low-Dropout, Low-IQ, 500mA Linear Regulators