🔑 Key Features

✅ Wide Input Voltage Range: 4V–40V DC (Supports up to 40V input). ✅ Adjustable Output Voltage: 1.25V–37V (Set via potentiometer). ✅ Linear Regulation – No high-frequency switching noise. ✅ Max 1.5A Output Current (Recommended: ≤1A without heatsink). ✅ Thermal & Overload Protection – Built-in safety features. ✅ Low Ripple & Stable Output – Perfect for analog circuits. ✅ Compact PCB Design – Easy to integrate into projects.

📊 Technical Specifications

• Input Voltage: 4V–40V DC

• Output Voltage: 1.25V–37V (Adjustable via potentiometer)

• Output Current: 1.5A Max (Continuous 1A recommended)

• Dropout Voltage: ~2V (Input must be ≥ output + 2V)

• Regulation Type: Linear (Not a switching converter)

• Operating Temperature: 0°C to +125°C

• Dimensions: ~43mm × 21mm × 14mm

🔌 Wiring & Usage

1. Input: Connect Vin+ (Positive) and GND (Negative) to power source (e.g., 12V battery).

2. Output: Connect Vout+ (Positive) and GND (Negative) to your circuit.

3. Adjust Voltage: Turn the blue potentiometer (use a multimeter to verify output).

⚠ Important Notes:

• Heat Dissipation Required! The LM317 dissipates excess power as heat—use a heatsink for currents >500mA.

• Efficiency Warning: Linear regulators are less efficient than buck converters (e.g., LM2596) when input voltage is much higher than output.

🛠 Applications

• Precision power supplies (for op-amps, sensors, microcontrollers).

• Audio amplifiers & Hi-Fi systems (low-noise power).

• LED drivers & lab bench power supplies.

• Arduino & Raspberry Pi voltage regulation (5V/3.3V).

• Replacing LM7805/LM7812 in low-power circuits.

📦 Package Includes

• 1× LM317 Adjustable Voltage Regulator Module.

⚡ Why Choose This Module?

✔ Clean, Stable Output – No switching noise (unlike buck converters). ✔ Simple & Reliable – No inductors or complex circuitry. ✔ Widely Used in Electronics – Trusted linear regulator design.