Precision Current Gauge IC with Ultra Low Loss Sense Element and PWM Output, for Low-Side Sensing The LM3813M-7.0 is a voltage regulator manufactured by National Semiconductor (NS). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Output Voltage:** 7.0V (fixed)  
- **Output Current:** Up to 500mA  
- **Input Voltage Range:** 8V to 30V  
- **Dropout Voltage:** 2V (typical)  
- **Line Regulation:** 0.05% (typical)  
- **Load Regulation:** 0.1% (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOIC-8  

### **Descriptions:**
- The LM3813M-7.0 is a positive voltage regulator designed to provide a stable 7.0V output.  
- It includes internal current limiting and thermal shutdown protection.  
- Suitable for industrial, automotive, and consumer applications requiring regulated power.  

### **Features:**
- **Fixed 7.0V Output**  
- **Low Dropout Voltage**  
- **Thermal Overload Protection**  
- **Short-Circuit Protection**  
- **Wide Input Voltage Range**  
- **Stable with Low-ESR Capacitors**  

This information is sourced from the manufacturer's datasheet and technical documentation.