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LM317 from NS/MOTO,National Semiconductor

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LM317

Manufacturer: NS/MOTO

3-Terminal 1.5Amp Adjustable Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM317 NS/MOTO 83 In Stock

Description and Introduction

3-Terminal 1.5Amp Adjustable Voltage Regulator The LM317 is a popular adjustable linear voltage regulator manufactured by National Semiconductor (NS) and also available from Motorola (MOTO).  

### **Specifications:**  
- **Output Voltage Range:** 1.25V to 37V  
- **Output Current:** Up to 1.5A  
- **Input-Output Differential Voltage (Dropout):** 3V (typical)  
- **Line Regulation:** 0.01%/V (typical)  
- **Load Regulation:** 0.1% (typical)  
- **Operating Junction Temperature:** 0°C to +125°C  
- **Package Types:** TO-220, TO-3, TO-92, SOIC, and others  

### **Descriptions:**  
The LM317 is a three-terminal adjustable positive voltage regulator designed to supply more than 1.5A of load current with an output voltage adjustable over a range of 1.25V to 37V. It requires only two external resistors to set the output voltage and features internal current limiting, thermal shutdown, and safe operating area protection.  

### **Features:**  
- Adjustable output voltage  
- Internal thermal overload protection  
- Short-circuit protection  
- Floating operation for high-voltage applications  
- Low standby current (typically 5mA)  
- 0.1% line and load regulation (typical)  

The LM317 is widely used in power supply circuits, battery chargers, and other applications requiring a stable, adjustable voltage source.

Application Scenarios & Design Considerations

3-Terminal 1.5Amp Adjustable Voltage Regulator

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