The L7912CV is a three-terminal negative voltage regulator manufactured by KEC. It provides a fixed -12V output voltage and is designed for a wide range of applications. This regulator features internal current limiting and thermal shutdown protection.

Applications:

• Power supplies: Providing a stable -12V voltage rail for analog circuits and other components.
• Linear regulators: Reducing voltage ripple and noise in power supplies.
• Instrumentation: Powering sensitive electronic instruments.
• Industrial control systems: Providing a reliable -12V supply for control circuits.
• Audio amplifiers: Powering operational amplifiers and other audio components.

Features:

• Fixed -12V output voltage: Provides a stable and accurate negative voltage.
• Internal current limiting: Protects the regulator from overcurrent conditions.
• Thermal shutdown protection: Prevents damage from excessive heat.
• Short-circuit protection: Protects the regulator and the connected circuit from short circuits.
• High ripple rejection: Minimizes output voltage ripple.
• TO-220 package: Enables easy mounting and heat sinking.

Benefits:

• Stable and reliable -12V supply: Ensures consistent performance of electronic devices.
• Protection against damage: Overcurrent and thermal shutdown protection enhance system reliability.
• Reduced noise and ripple: Improves the quality of the power supply.
• Easy to use: Simple three-terminal design simplifies circuit design.
• Cost-effective solution: Provides a balance of performance and price.

Additional Details:

The L7912CV typically operates with an input voltage range of -14.5V to -35V and provides a fixed output voltage of -12V with a tolerance of ±4%. It features a low quiescent current, which minimizes power consumption when the regulator is in standby mode. The device is available in a TO-220 package for easy mounting and heat sinking. It is designed to maintain a stable output voltage even under varying load conditions and temperature changes.