LM7805 / L7805 5V Linear Voltage Regulator TO-220 ⚡

The LM7805 / L7805 voltage regulator in a TO-220 package delivers a stable 5V output for a wide range of electronics components and modules. Designed for reliability and ease of use, it is ideal for powering microcontroller projects, development boards, and embedded systems, including Arduino-based builds and 5V peripherals for Raspberry Pi projects.

Key Features 🔑

• Fixed 5V output for consistent logic-level power
• Up to 1.5A output current (with adequate heatsinking)
• Thermal overload protection 🛡️
• Short-circuit protection ⚠️
• High-precision output voltage (±2%) for sensitive circuits
• TO-220 package with mounting tab for easy heatsink attachment

Technical Specifications 🧾

• Model: LM7805-L7805
• Package Type: TO-220 (through-hole)
• Input Voltage Range: 7.2V to 35V
• Output Voltage: 5V ± 2%
• Maximum Output Current: 1.5A
• Operating Temperature: -40°C to 125°C

Pinout 🧷

Facing the front of the package (leads downward):

• Pin 1: Input (Vin)
• Pin 2: Ground (GND)
• Pin 3: Output (Vout = 5V)

Applications 🚀

Versatile and widely used in both professional designs and DIY builds, including:

• Power supply units and 5V rails
• Battery chargers and adapters
• Home appliances and consumer electronics
• DIY electronics projects and Arduino prototypes
• Automotive electronics (with proper input filtering)
• General electronics components and modules needing regulated 5V

Design Notes & Best Practices 🛠️

• Headroom (dropout): Provide at least ~2V headroom above 5V for proper regulation. A Vin of ≥7V is recommended for stable operation within the specified range.
• Heat dissipation: As a linear regulator, power loss is P ≈ (Vin − 5V) × Iload. Use a heatsink when driving higher currents or operating from higher input voltages.
• Bypass capacitors: For stability, place capacitors close to the pins (typical: 0.33 µF at input and 0.1 µF at output) plus suitable bulk electrolytics as needed.
• System compatibility: Excellent for powering sensors, logic, and microcontroller boards (e.g., Arduino). For high-current single-board computers like Raspberry Pi, prefer a high-efficiency 5V supply due to thermal limits of linear regulators.

Why Choose This Regulator? ✅

• Proven, robust 5V linear regulator design
• Integrated protections for safe operation
• Ideal for prototyping, education, and production builds
• Seamless integration with common electronics modules and development platforms