LM7805 / L7805CV Positive Voltage Regulator (Fixed 5V - TO-220 Package)

When your project demands a stable, noise-free 5-Volt power rail from a higher voltage battery or power brick, the LM7805 is the definitive industry-standard solution. Part of the iconic 78xx series of fixed-voltage linear regulators, this three-terminal integrated circuit is designed to take a higher, fluctuating DC input voltage and step it down to a precise, continuous 5-Volt output. Because it is a linear regulator, it provides exceptionally clean power with virtually zero high-frequency switching noise, making it highly favored for sensitive analog-to-digital conversions and microcontroller logic boards.

Housed in the standard, robust TO-220 through-hole package, the LM7805 can comfortably deliver up to 1.5 Amps of output current. It features an integrated heavy metal backing tab designed to bolt directly onto an aluminum heatsink or metal chassis, allowing it to safely shed excess voltage as thermal energy. With zero external configuration components required other than standard smoothing capacitors, it offers an absolute foolproof method for providing standard 5-Volt USB-level power on your custom circuit boards.

Key Features & Functional Advantages

• Fixed 5-Volt Output: Factory-trimmed to output exactly 5 Volts, completely eliminating the need for external voltage-setting resistors and simplifying your circuit board layout.

• 1.5 Amp Current Rating: Capable of supplying over 1.5 Amps of continuous current when paired with an adequate thermal management system, easily powering most logic boards and sensor arrays.

• Low-Noise Linear Architecture: Does not generate the electromagnetic interference or high-frequency ripple typical of buck switching converters, ensuring clean logic signals.

• Comprehensive Internal Safety: Equipped with built-in thermal overload protection and internal short-circuit current limiting to make it virtually indestructible against accidental wiring mistakes.

• Drop-In Simplicity: Requires only an input pin, a ground pin, and an output pin, significantly lowering the overall component count of your power supply module.

Perfect For

• Microcontroller Logic Boards: Providing the dedicated, clean 5-Volt rail needed to reliably run standard development boards from a 9-Volt or 12-Volt battery.

• Sensor Arrays: Powering 5-Volt ultrasonic distance sensors, LCD screens, and logic-level shifters without voltage sag.

• Industrial Interface Modules: Stepping down standard 12-Volt or 24-Volt industrial supply lines down to a steady 5 Volts for localized control logic.

• Educational Breadboarding: The absolute best introductory regulator for learning how to build simple, safe power supplies in electronics labs.

Technical Specifications

• Device Type: Standard Linear Voltage Regulator

• Output Type: Fixed Positive

• Output Voltage: 5.0 Volts DC

• Input Voltage Range: 7.0 Volts to 35.0 Volts DC

• Maximum Output Current: 1.5 Amps

• Voltage Drop-Out: Typically 2.0 Volts (Requires the input to be at least 7.0 Volts to maintain a solid 5-Volt output)

• Package Type: 3-Pin TO-220 (Vertical through-hole with metal heatsink tab)

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