Description
Description
The LM317 is a versatile adjustable linear voltage regulator designed to provide a stable output voltage from 1.25V up to 37V using an external resistor divider. It is widely used in adjustable power supplies, battery charging circuits, and voltage regulation applications due to its simplicity and flexibility. The device supports up to 1.5A output current and includes built-in current limiting, thermal shutdown, and safe operating area protection for reliable operation. With a robust TO-220 package, the LM317 is ideal for both prototyping and permanent power supply designs.
Features
- Adjustable output voltage from 1.25V to 37V
- Output current up to 1.5A
- Simple resistor-based voltage setting
- Built-in current limiting protection
- Thermal shutdown protection
- Safe operating area protection
- Good line and load regulation
- Wide input voltage range up to 40V
- Suitable for adjustable power supplies
- Ideal for battery chargers and LED drivers
- TO-220 package for effective heat dissipation
- Easy PCB mounting
- Reliable linear voltage regulation
- Low ripple output
Specifications
- Model: LM317
- Device Type: Adjustable Linear Voltage Regulator
- Output Voltage Range: 1.25V to 37V
- Maximum Output Current: 1.5A
- Input Voltage Range: Up to 40V
- Reference Voltage: 1.25V
- Dropout Voltage (Typical): 2V
- Output Voltage Accuracy: 1%
- Protection Features: Current Limit, Thermal Shutdown, Safe Area Protection
- Quiescent Current: Typical 3.5mA
- Line Regulation: Typical 0.01%
- Load Regulation: Typical 0.1%
- Operating Temperature Range: -40C to +125C
- Package Type: TO-220
- Mounting Type: Through-Hole
- Application Type: Adjustable Power Regulation
Links
- 3D Model
- Datasheet
Tutorials
- LM317 Step down Voltage Regulator
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