The LM7805 5V Voltage Regulator IC is a three-terminal positive voltage regulator that provides a stable 5V DC output from a higher DC input voltage. It is widely used in Arduino projects, power supplies, battery-powered devices, embedded systems, robotics, and DIY electronics. The LM7805 features built-in thermal overload protection, short-circuit protection, and safe operating area protection for reliable performance.
Features
- Full Name: LM7805 5V Positive Voltage Regulator IC
- Fixed 5V regulated output
- Output current up to 1A (with proper heat sink)
- Built-in thermal overload protection
- Short-circuit protection
- Excellent line and load regulation
- Low output noise
- TO-220 package for easy mounting
- Simple three-pin design
- Reliable and durable performance
Specifications
| Specification | Value |
|---|---|
| Product Type | Linear Voltage Regulator IC |
| Model | LM7805 |
| Package | TO-220 |
| Output Voltage | 5V DC |
| Input Voltage | 7V–35V DC (Recommended: 7V–20V) |
| Maximum Output Current | Up to 1A |
| Dropout Voltage | Approx. 2V |
| Operating Temperature | 0°C to +125°C |
Pin Configuration
When viewed from the front (text facing you, pins downward):
| Pin | Function |
|---|---|
| 1 | Input (IN) |
| 2 | Ground (GND) |
| 3 | Output (OUT) |
Note: The metal tab is internally connected to Ground (GND).
Applications / Uses
- 5V power supplies
- Arduino and microcontroller projects
- Battery-powered circuits
- Embedded systems
- Robotics
- LED driver circuits
- Sensor power supply
- DIY electronics
- Educational projects
- Industrial control systems
Advantages
- Stable 5V output
- Easy to use
- Built-in protection features
- Reliable performance
- Low cost
- Widely available
- Suitable for hobby and industrial applications
Size
- Package Type: TO-220
- Body Width: Approx. 10 mm
- Body Height: Approx. 15 mm
- Overall Height (with leads): Approx. 30 mm
- Lead Pitch: 2.54 mm
- Weight: Approximately 2 g
Package Includes
- 1 × LM7805 5V Voltage Regulator IC (TO-220)
Note: The LM7805 is a linear regulator, so excess input voltage is dissipated as heat. When operating with a high input voltage or supplying high current, use a suitable heat sink to ensure reliable operation.






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