LM 317 Voltage Regulator

The LM317 is a highly versatile, adjustable linear voltage regulator that offers a broad output range from 1.25V to 37V, making it ideal for various custom DC power applications. With a maximum output current of 1.5A, it supports a wide range of low-to-moderate current requirements.

This regulator is housed in a TO-220 package, ensuring ease of mounting and effective heat dissipation with a heatsink. Built-in features such as thermal overload shutdown, current limiting, and safe operating area (SOA) protection make it a reliable and safe choice for both DIY electronics projects and professional designs.

🛠 Technical Details

💡 Use Cases & Applications

• 🔋 Adjustable Power Supply
  Design your own variable bench power supply with fine voltage control.

• 📟 Battery Charging Circuits
  Create safe and controlled charging circuits for Li-ion or NiMH batteries.

• 🔌 Embedded Systems Prototyping
  Power microcontrollers or sensors with specific voltage levels.

• 💡 LED Lighting Systems
  Regulate voltage in LED strip driver circuits or dimming applications.

• 🔧 Audio & Analog Circuits
  Use for clean, adjustable power in audio preamps and analog sensor systems.

🛠️ Pair With

• 🔩 Electronics Components – Capacitors, resistors, and diodes for LM317 configuration.

• 🔌 Power Supplies – Input sources for regulated circuits.

• 🧰 Tools and Accessories – Soldering irons and multimeters for project assembly.

🎥 YouTube Tutorial

📺 Learn how to build a variable power supply using LM317
👉 Watch Tutorial

⚠️ Precautions & Tips

• 🧯 Always use heat sinks when drawing higher current to prevent overheating.

• ⚠️ Place input and output capacitors (typically 0.1μF and 1μF) for stability and filtering.

• 🧲 Adjust the output voltage by using an external resistor-divider (R1 and R2).

• 🔁 Protect with diodes in battery-charging or capacitive loads to prevent reverse polarity.

🏁 Summary & Call-to-Action

The LM317 Voltage Regulator delivers adjustable, stable, and reliable output for a wide array of electronics applications. Whether you’re working on a DIY bench supply or embedded device, this IC offers precision and durability.

👉 Order now at Electroway and get reliable voltage control for your next project.