LM7805 Voltage Regulator IC Pinout Datasheet

Introduction

The LM7805 Voltage Regulator IC is one of the most widely used linear voltage regulators in electronic circuits. It is a member of the famous 78XX series of regulators, where “XX” represents the output voltage. The LM7805 provides a fixed +5V regulated output and can deliver up to 1.5A of current with proper heat sinking. It is highly popular in embedded systems, microcontroller-based projects, and other electronics applications that require a stable and noise-free +5V DC supply.

This regulator is designed to take a higher input voltage, typically between 7V and 35V, and regulate it down to a precise +5V output. By using LM7805, designers can protect sensitive electronic components from voltage fluctuations and spikes. The IC features internal current limiting, thermal shutdown, and safe area protection, making it robust and reliable for long-term use in consumer electronics, DIY projects, and industrial automation systems.

LM7805 Voltage Regulator IC

Due to its simple design, low cost, and high reliability, LM7805 is often the first choice for hobbyists and engineers. It is available in different package types such as TO-220, TO-252, and TO-92, making it versatile for both low-power and high-power applications. Whether in an Arduino project, robotics, power supplies, or communication circuits, the LM7805 ensures stable voltage regulation with minimal external components.

LM7805 Pinout

LM7805 Key Features

• Provides fixed +5V regulated output
• Maximum output current: up to 1.5A (with proper heat sink)
• Wide input voltage range
• Internal thermal overload protection
• Short-circuit protection
• Safe operating area protection
• Low cost and widely available
• Easy to use with minimal external components
• Available in different packages (TO-220, TO-252, TO-92)

LM7805 Specifications/Characteristics

• Output Voltage: +5V (fixed)
• Input Voltage Range: 7V – 35V
• Output Current: Up to 1.5A
• Voltage Tolerance: ±2%
• Dropout Voltage: Typically 2V
• Operating Junction Temperature: 0°C to +125°C
• Maximum Power Dissipation: Depends on package & heat sink
• Package Types: TO-220, TO-252, TO-92

Note: DATASHEET DOWNLOAD button is provided end of this article.

Pin Configuration of LM7805 Voltage Regulator IC

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Key Applications of LM7805 Voltage Regulator IC

• Microcontroller and Arduino projects
• Embedded systems and robotics
• Fixed +5V power supply design
• Battery chargers and adapters
• Consumer electronics (radios, toys, LED drivers)
• Communication equipment
• DIY electronics projects
• Industrial automation systems

LM7805 Equivalent ICs / Alternatives

• LM7806 (fixed +6V regulator)
• LM7809 (fixed +9V regulator)
• LM7812 (fixed +12V regulator)
• LM317 (adjustable voltage regulator)
• AMS1117-5.0 (low-dropout +5V regulator)
• 78M05, L7805CV, KA7805 (other manufacturer equivalents)

(The pinout for certain ICs can vary from that of the LM7805).

Datasheet of LM7805 Voltage Regulator IC

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