L78M09CV

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L78M09CV is a 9-volt regulator IC that provides a regulated output with low output noise and low drop out voltage. It has the flexibility of being able to be used for a wide variety of high current applications. The L78M09CV has a maximum output current of 3A and a maximum power dissipated of 40W.

The L78M09CV is a three-terminal positive adjustable voltage regulator. It is designed to provide a highly regulated output voltage, up to 12V, with a minimum of external components. The internal adjustable voltage reference allows the user to select any output voltage between 8V and 12V. The L78M09CV is able to provide current up to 3A without additional heat sinks.

The L78M09CV is well matched for use in applications where tight load and line regulation, low noise, and low dropout voltage are required. The L78M09CV regulator is ideal for post regulation of switched mode power supplies, providing a highly regulated regulated DC voltage; in LCD monitor power supply designs where an adjustable voltage regulation is required; in telecommunication equipment where a tight regulation is needed; in fast data processing systems where noise must be kept under control; in battery chargers, motor controllers, and other applications where low dropout voltage and high output current (up to 3A) is needed.

The L78M09CV voltage regulator works on the principle of linear regulation. Linear regulation works by reducing the voltage obtained from the output of the power supply to the required level. It does this by passing the input voltage through a pass element such as a transistor to the load, with a feedback loop to the control node which retards the current entering the pass element if the output voltage rises above the required level, or increases the current if it drops below the required level. This creates a stable voltage to the load. The input voltage is 5.5V-12V and the output voltage can be adjusted from 8V to 12V.

The L78M09CV features low output noise, high power supply rejection, current and thermal protection. It also has a low dropout voltage and a maximum power dissipation of 40W. The device is available in TO-220-4, DPAK-4 and SOT-223-4 package.

The L78M09CV voltage regulator has many advantages over other regulators and can be used in many different applications. Its low dropout voltage allows it to provide high output current and power which make it optimal for applications where tight regulation and low noise are required, and its internal adjustable voltage reference allows users to choose an output voltage between 8V and 12V. Its wide input voltage range, current and thermal protection, high power supply rejection, and low noise performance make it ideal for many high current applications.

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