onsemi Adjustable Linear Voltage Regulator, 40V, 3-Pin, Surface Mount, Positive Polarity LM317D2TG

The onsemi LM317D2TG is an adjustable linear voltage regulator designed for precise power management across a variety of demanding applications, including industrial, automotive, and electronic systems. This 3-pin surface mount device enables engineers to regulate output voltages from 1.25 V up to 37 V, providing flexible control for circuits requiring stable supply or programmable regulation.

Featuring positive polarity, the LM317D2TG delivers up to 1.5 A output current, making it well-suited for both low and moderate power electronics. Its surface mount design supports contemporary PCB layouts, streamlining installation and integration in compact electronic assemblies and devices.

Critical protection mechanisms are built in, including short circuit current limiting, thermal protection, and safe-area compensation, ensuring the regulator's operational safety and longevity even in challenging environments. The device is compliant with the AEC-Q100 automotive quality standard, meeting industry requirements for automotive electronics and robust industrial reliability.

With a low quiescent current of only 4mA, the LM317D2TG maintains high power efficiency, minimizing unwanted parasitic draw and supporting energy-saving designs. Its compact footprint, measuring 10.24mm (length), 9.35mm (width), and 4.57mm (height), allows for efficient use of board space, optimizing the overall hardware layout.

Industrial and laboratory applications benefit from the LM317D2TG’s programmable capability; engineers can configure output voltages with precision by adjusting resistors between the adjustment and output pins. Floating operation for high-voltage uses, as well as flexibility in regulating current or voltage, further expand its applicability in advanced control systems, instrumentation, and automation circuits.

Common use cases include on-card regulation in control boards, precision current regulation in sensor circuits, and programmable voltage adapters in automotive, manufacturing, and commercial electronic projects. The LM317D2TG’s reliability under wide temperature ranges (maximum operating temperature of 125°C) ensures robust performance across environments.

For more options in voltage regulation and power management, visit EnvMart’s category of Voltage Regulator ICs and discover onsemi’s comprehensive range for industrial and electronic applications.