ONSEMI LM317 Adjustable Voltage Regulator, 1.5A, TO-220

The ONSEMI LM317 is a versatile and robust adjustable three-terminal positive voltage regulator. It is capable of supplying more than 1.5 A of output current across a wide output voltage range of 1.2 V to 37 V. Renowned for its ease of use, it requires only two external resistors to set the desired output voltage, simplifying circuit design for a wide range of applications.

This regulator incorporates advanced protection features to ensure reliable operation. It employs internal current limiting, thermal shutdown, and safe area compensation, making it highly resilient and essentially blow-out proof. These integrated safeguards protect the device and your circuit from overloads and faults.

Key Features and Benefits

• Adjustable Output: Provides a flexible output from 1.2V to 37V, eliminating the need to stock multiple fixed-voltage regulators.
• High Current Capability: Can supply in excess of 1.5A, suitable for powering a variety of components and subsystems.
• Comprehensive Protection: Features internal thermal overload protection, short-circuit current limiting, and output transistor safe-area compensation.
• Floating Operation: Suitable for high-voltage applications due to its floating design.
• Easy to Use: Only requires two external resistors for voltage setting, minimising component count and board space.

The device is supplied in a through-hole mount TO-220 package with 3 pins, making it straightforward to integrate into prototypes and final designs. It operates reliably across a broad temperature range from 0°C to 125°C, ensuring performance in demanding environments.

With its combination of flexibility, protection, and ease of implementation, the LM317 is an excellent choice for creating stable and reliable power supplies.