ON Semiconductor Linear Voltage Regulator, Adjustable 1.2V to 37V, 100mA, TO-92

The ON Semiconductor LM317LZG is a versatile and robust adjustable 3-terminal positive linear voltage regulator. Designed for simplicity and reliability, it can supply over 100mA across a wide output voltage range from 1.2V to 37V, making it an indispensable component for a myriad of electronic designs. Its operation is exceptionally straightforward, requiring only two external resistors to set the desired output voltage, which streamlines circuit design and reduces component count.

Engineered for durability, the regulator incorporates advanced protection features including internal current limiting, thermal shutdown, and safe area compensation. These integrated safeguards make the device essentially blow-out proof, protecting both the regulator and the broader circuit from damage due to overloads, short circuits, or excessive temperatures. This robust design ensures stable and reliable performance under demanding conditions.

Its primary application is in providing local, on-card regulation, eliminating noise and voltage drops associated with remote power supplies. Beyond standard voltage regulation, the LM317LZG's flexibility allows it to be configured as a programmable output regulator. Furthermore, by connecting a fixed resistor between its adjustment and output terminals, it can be repurposed as a highly effective precision current regulator, adding significant utility to its design.

A key advantage of this device is its floating operation capability, which allows it to be used in high-voltage applications. This feature, combined with its adjustable nature, eliminates the need to stock multiple fixed-voltage regulators, simplifying inventory management for engineers and hobbyists alike. It is a proven solution trusted in automotive electronics, power management systems, and various industrial control applications where consistent voltage is critical.

Housed in a compact, industry-standard TO-92 through-hole package