LM7805 5V Voltage Regulator IC TO-220 1A Linear Regulator Through Hole

LM7805 5V Voltage Regulator IC – TO-220 1A Linear Regulator (Through Hole)

The LM7805 is the most widely used fixed positive linear voltage regulator, providing a stable +5V output at up to 1A of continuous current. In the rugged TO-220 package, it is heatsinkable and drop-in compatible with virtually every 5V-powered electronics project.

Key Specifications

• Output Voltage: +5V (fixed)
• Output Current: Up to 1A continuous
• Input Voltage Range: 7V to 35V
• Package: TO-220 (3-pin through hole)
• Dropout Voltage: ~2V typical
• Line Regulation: ≤4 mV
• Operating Temperature: 0°C to +125°C

Compatibility & Use Cases

The LM7805 is a staple in power supply designs for Arduino, ESP32, NodeMCU, and other 5V microcontroller boards. Common applications include:

• 5V regulated power supply from 9V or 12V adapters
• Microcontroller and sensor power rails
• USB charger and power bank circuits
• Logic level power conditioning for IoT nodes
• DIY bench power supply and voltage reference builds

Always add a 0.33µF input capacitor and 0.1µF output capacitor for stability, especially when the regulator is far from the main filter capacitor.

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