STMicroelectronics: L7812CV Positive Linear Voltage Regulator TO-220 IC

L7812CV Positive Linear Voltage Regulator IC – TO-220 Package

The L7812CV is a fixed-output positive linear voltage regulator from STMicroelectronics, part of the popular L78xx series. Housed in a TO-220 package, it delivers a stable, regulated 12V output and is widely used to power microcontrollers, sensors, and analog circuits requiring a clean, fixed supply. It includes internal current limiting, thermal shutdown, and safe operating area protection, making it a rugged and reliable choice for linear power supply designs.

Product Details

Features

• Fixed +12V regulated output
• Output current up to 1.5A
• Internal thermal overload protection
• Internal short-circuit current limiting
• Output transistor safe operating area protection
• No external components required for basic operation
• Industry-standard TO-220 package for easy heatsinking

Applications

• Regulated power supplies for microcontroller/sensor circuits
• Linear DC-DC voltage conversion (e.g., 15V/24V to 12V)
• Battery-powered and automotive electronics
• Audio and analog signal circuits requiring stable 12V
• Relay driver and industrial control circuits

Usage Note

For stable output, use input/output decoupling capacitors (typically 0.33µF on input, 0.1µF on output) close to the IC pins; attach a heatsink if operating near maximum current or with high input-output voltage differential.

Package Includes

• 1 x L7812CV Voltage Regulator IC (TO-220)

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