L7812CV

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L7812CV Application Field and Working Principle

L7812CV is a popular three-terminal positive voltage regulator integrated circuit that is capable of providing a constant output voltage of up to 12V. It is designed to be used in a wide range of applications including power supplies, RC battery supplies, LED lighting systems, multi-channel amplifier circuits, communication systems, and industrial and automotive controls. The L7812CV is a popular voltage regulator IC due to its excellent performance and low cost.

Overview

The L7812CV is a voltage regulator IC that is capable of providing a constant output voltage of up to 12V. It is designed to be used in a wide range of applications including power supplies, RC battery supplies, LED lighting systems, multi-channel amplifier circuits, communication systems, and industrial and automotive controls. The IC is available in TO-220, TO-254 and D2Pak packages and is rated for operating temperature range from 0°C to 150°C. The maximum output current for the L7812CV is 1A.

The L7812CV is a 3-terminal positive voltage regulator integrated circuit with a built-in reference voltage of 2.5V. It is designed to provide a constant output voltage over a wide range of input voltage and current variations. It features overload protection, output current limiting, thermal overload protection, and reverse-battery protection.

Features

• Built-in 2.5V reference voltage.
• Low output voltage tolerance under heavy load.
• Integrated thermal overload protection.
• Integrated short-circuit protection.
• Integrated reverse-battery protection.
• Low dropout voltage.

Applications

• Power supplies
• RC battery supplies
• LED lighting systems
• Multi-channel amplifier circuits
• Communication systems
• Industrial and automotive controls

Working Principle

The L7812CV is a three-terminal positive voltage regulator integrated circuit with a built-in reference voltage of 2.5V. It is designed to provide a constant output voltage over a wide range of input voltage and current variations. The IC operates by taking input voltage through its input voltage terminal and reference voltage through its reference terminal. Using an internal voltage comparator, it compares the two input voltages and provides an output voltage which is clamped to the reference voltage at its Output terminal.

The L7812CV has an internal current limiting circuit which limits the current flow through the output transistor. This current limiting circuit is designed to protect the output transistor from overheating and short circuiting. It also has an internal thermal overload protection circuit which is designed to protect the IC from overheating. The voltage dropout of the L7812CV is very low and hence it can be used in applications where the input voltage is close to the output voltage.

Conclusion

The L7812CV is an extremely popular three-terminal positive voltage regulator integrated circuit that is capable of providing a constant output voltage of up to 12V. It is designed to be used in a wide range of applications including power supplies, RC battery supplies, LED lighting systems, multi-channel amplifier circuits, communication systems, and industrial and automotive controls. The IC is available in TO-220, TO-254 and D2Pak packages and is rated for operating temperature range from 0°C to 150°C. The maximum output current for the L7812CV is 1A.

The L7812CV has built-in features such as current limiting, thermal overload protection, and reverse-battery protection, which make it an ideal solution for a wide range of applications. The L7812CV is a robust and reliable solution for any application where a steady output voltage of up to 12V is required.

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