L7818CV-DG

The L7818CV-DG is a linear voltage regulator manufactured by STMicroelectronics, designed to provide a stable output voltage of 18V. This component 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 L7818CV-DG delivers a fixed output voltage of 18V, making it suitable for applications that require a consistent voltage supply.

2. Input Voltage Range: The regulator can accept a wide input voltage range, typically from 21V to 35V, allowing it to be used in various power supply configurations.

3. Current Output: It can provide a maximum output current of up to 1.5A, which is sufficient for many consumer and industrial applications.

4. Thermal Protection: The L7818CV-DG includes built-in thermal overload protection, which prevents the device from overheating and ensures safe operation under high load conditions.

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

6. Package Type: The L7818CV-DG is typically available in a TO-220 package, which is a common choice for power devices due to its good thermal performance and ease of mounting.

7. Dropout Voltage: The dropout voltage is relatively low, typically around 2V, which means that the input voltage needs to be at least 2V higher than the output voltage for proper regulation.

8. Ripple Rejection: The device offers good power supply rejection ratio (PSRR), which helps to minimize the impact of input voltage fluctuations on the output voltage.

9. Application Areas: The L7818CV-DG is commonly used in power supplies for audio equipment, industrial control systems, and other electronic devices that require a stable 18V power supply.

Electrical Characteristics:

• Input Voltage (Vin): 21V to 35V
• Output Voltage (Vout): 18V
• Output Current (Iout): Up to 1.5A
• Dropout Voltage (Vdrop): Typically 2V
• Operating Temperature Range: -40°C to +125°C

Conclusion:

The L7818CV-DG from STMicroelectronics is a robust and efficient linear voltage regulator that provides a reliable 18V output for various electronic applications. Its combination of thermal and short-circuit protection, along with a wide input voltage range and good current output capabilities, makes it a popular choice among engineers and designers looking for a dependable voltage regulation solution.