L7805 Transistor TO-220 (cn) Code: 12939027

The L7805 is a classic 3-terminal positive fixed linear voltage regulator IC that steps down a higher DC input voltage (typically between 7 V to 35 V) into a stable, regulated +5 V output.

Key Specifications

• Output Voltage:Fixed +5 V
• Output Current:Up to 1.5 A (with adequate heatsink)
• Maximum Input Voltage:35 V
• Dropout Voltage:2 V to 2.5 V (requires an input of at least 7 V to reliably output 5 V)
• Operating Temperature Range:0° C to +150° C

Pinout Configuration (TO-220 Package)

1. Pin 1 (Input):Accepts the unregulated positive DC voltage source.
2. Pin 2 (Ground / GND):Common ground for both input and output.
3. Pin 3 (Output):Supplies the steady regulated +5 V to your circuit.

Built-in Protections

• Thermal Overload Protection:Automatically shuts down the IC if it overheats.
• Short-Circuit Current Limiting:Protects the regulator from permanent damage during output shorts.

Typical Applications

• Powering microcontrollers, sensors, and Arduino boards.
• General-purpose, low-noise +5 V DC power supplies.