7812 1,5A STMICROELECTRONICS

LM7812 Linear Voltage Regulator

The LM7812 linear voltage regulator (Micros Symbol: ST+12-1.5, often marked as ST+12 1.5 cdi) is a popular and reliable electronic component designed to provide a stabilized +12V DC output. It is a positive regulator, meaning it stabilizes the output voltage above ground. Thanks to its simple design and ease of use, it is widely applied in various power supply circuits.

Key features and capabilities of the LM7812 regulator

• Type: Linear voltage regulator, positive
• Output voltage: +12V
• Output current: Up to 1.5A
• Manufacturer: Various manufacturers (e.g., CDIL, depending on the specific version offered by Micros)
• Package: TO220 (a popular through-hole package, allowing easy heatsink mounting)
• Input voltage (max.): Typically up to 35V
• Output voltage tolerance: About 2%
• Operating temperature range: Typically from 0°C to 125°C
• Noise immunity: Provides stable output voltage even with fluctuations of the input voltage.

Typical applications of the LM7812 regulator

The LM7812 regulator is a versatile component widely used in many areas of electronics, such as:
power supplies – in power supply designs to stabilize 12V, both in linear supplies and as a post-regulation stage in switching supplies;

• consumer electronics – in radios, televisions, audio systems, and other electronic devices;
• control systems – for powering microcontrollers, relays, and other components requiring stable 12V;
• automation – in industrial and home automation systems, providing stable power to sensors and actuators;
• prototyping and education – widely used in hobbyist and educational projects due to its simplicity and reliability.

The LM7812 in a TO220 package is a classic choice for applications requiring simple and effective 12V voltage regulation.