L7812CV

The L7812CV is a linear voltage regulator manufactured by STMicroelectronics, designed to provide a stable output voltage of 12 volts. It is part of the L78xx series of voltage regulators, which are widely used in various electronic applications due to their reliability and ease of use.

Key Features:

1. Output Voltage: The L7812CV delivers a fixed output voltage of 12V, making it suitable for powering devices that require a stable voltage supply.

2. Input Voltage Range: The device can accept a wide input voltage range, typically from 14V to 35V, allowing it to be used in various power supply configurations.

3. Current Output: The L7812CV can provide a maximum output current of 1.5A, which is sufficient for many low to medium power applications.

4. Thermal Protection: It includes built-in thermal overload protection, which prevents the device from overheating and ensures safe operation under high load conditions.

5. Short-Circuit Protection: The regulator is designed with short-circuit protection, which safeguards the device and the connected load in case of a fault condition.

6. Package Type: The L7812CV is typically available in a TO-220 package, which is a common form factor for power devices. This package allows for efficient heat dissipation, making it suitable for applications where heat management is critical.

7. Dropout Voltage: The dropout voltage of the L7812CV is relatively low, typically around 2V, which means it can maintain regulation even when the input voltage is close to the output voltage.

8. Ripple Rejection: The device offers good ripple rejection, ensuring that fluctuations in the input voltage do not significantly affect the output voltage stability.

9. Application Areas: The L7812CV is commonly used in power supply circuits for various electronic devices, including microcontrollers, sensors, and other digital circuits that require a stable 12V supply.

Electrical Characteristics:

• Input Voltage (Vin): 14V to 35V
• Output Voltage (Vout): 12V
• Output Current (Iout): Up to 1.5A
• Dropout Voltage (Vdrop): Typically 2V
• Operating Temperature Range: -40°C to +125°C

Typical Applications:

• Power supplies for consumer electronics
• Voltage regulation in automotive applications
• Powering microcontrollers and embedded systems
• Audio equipment and other analog circuits

Conclusion:

The L7812CV from STMicroelectronics is a versatile and reliable linear voltage regulator that provides a fixed 12V output with a range of protective features. Its robust design and ease of integration make it a popular choice for engineers and hobbyists alike in various electronic projects and applications.