LM317MDCYR – Adjustable Linear Voltage Regulator 40V 500mA IC SOT-223-4

Resources:
Datasheet
Adjustable 40V 500mA Linear Voltage Regulator IC for Power Supply Circuits, Battery Chargers, and Embedded Electronics SOT-223 Package
The LM317MDCYR adjustable linear voltage regulator provides a flexible and reliable solution for generating stable output voltages in electronic circuits. Designed to handle input voltages up to 40V and deliver up to 500mA output current, this regulator allows designers to set the desired output voltage using just two external resistors. The compact SOT-223 package makes it suitable for space-constrained PCB layouts while maintaining good thermal performance.
This adjustable voltage regulator IC is widely used in power management applications such as microcontroller power supplies, industrial electronics, battery charging circuits, and embedded development boards. The device includes built-in thermal shutdown, current limiting, and safe-area protection, ensuring stable operation and protecting the circuit under overload conditions. Its proven architecture makes it a dependable choice for engineers, students, and hardware designers building regulated DC power supplies.
Key Features

Adjustable Output Voltage Output voltage configurable from 1.25V up to 37V using external resistors
High Input Voltage Capability Supports input voltage up to 40V for versatile power supply designs
500mA Output Current Suitable for medium-power analog and digital circuits
Integrated Protection Includes thermal shutdown, internal current limiting, and safe-area compensation
Stable Linear Regulation Provides low noise and consistent voltage output
Compact SOT-223 Package Good thermal characteristics with space-efficient PCB mounting