LM7805 Voltage Regulator 5V
The LM7805 Voltage Regulator is a popular member of the 78XX series of fixed linear voltage regulators. Designed to output a regulated +5V, it simplifies power design for DC power supplies, embedded systems, and development boards by providing clean, stable voltage from unregulated sources ranging from 7V to 35V.
Built into a TO-220 package, this IC offers built-in thermal overload protection, short-circuit safety, and safe-area compensation to prevent damage under fault conditions. It is an essential component in circuits where regulated 5V power is required, such as logic circuits, sensors, and communication modules.
🛠 Technical Details
| Specification | Details |
|---|---|
| Output Voltage | 5V (Fixed) |
| Input Voltage Range | 7V – 35V |
| Max Output Current | 1A to 1.5A (with heatsink) |
| Dropout Voltage | 2V (typical) |
| Package Type | TO-220 |
| Output Type | Fixed |
| Internal Protection | Thermal, Short-circuit |
| Operating Temperature | -40°C to +125°C |
💡 Use Cases & Applications
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⚙️ Microcontroller Power Supply
Ideal for powering logic-level devices like Raspberry Pi peripherals or ESP modules from unregulated DC sources. -
🔌 Bench Power Supply
Used in lab setups for regulated 5V rails in power supply design. -
🔧 DIY Projects & Robotics
Power servo motors, IR sensors, or drone control boards requiring 5V logic. -
📦 Industrial Electronics
Maintains stable voltage in sensor-driven automation systems and signal conditioning units. -
📡 Communication Modules
Supports modules like GSM, GPS, or Bluetooth, which require a clean 5V source for reliable operation.
🛠️ Pair With
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⚡ Power Supplies – Input sources and wall adapters.
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🧩 Electronic Components – Capacitors, diodes, and support components.
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🧰 Tools & Accessories – Perfect your setup with soldering tools and test instruments.
🎥 YouTube Tutorial
📺 How to Use LM7805 for a 5V Power Supply
👉 Watch Tutorial
⚠️ Precautions & Tips
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🌡️ Use a heatsink when drawing more than 500mA to prevent overheating.
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🔁 Place input and output capacitors (e.g., 0.33μF and 0.1μF) close to the regulator for stability.
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🚫 Don’t exceed 35V input — may damage the IC.
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🔒 Ensure ground continuity in your PCB design to avoid noise issues.
🏁 Summary & Call-to-Action
The LM7805 Voltage Regulator IC offers a clean, stable 5V output and is trusted in countless electronics applications. It is ideal for both beginners and engineers needing a cost-effective power regulation solution.
👉 Available now at Electroway — your hub for electronics innovation.
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