MC7805BDTRKG

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Introduction

MC7805BDTRKG is a three-terminal voltage regulator, belongs to the PMIC (Power Management IC) family, and more specifically - to the type of linear voltage regulators. It is a positive voltage regulator with an output voltage of 5V and a maximum output current of 1A and a dropout voltage of 1.3V. This means that at 1A output current, this regulator will draw current from input which is only 1.3V higher than the required output voltage. Such low dropout voltage allows for lower power dissipation, high efficiency and low power consumption.

Working Principle

The MC7805BDTRKG regulator uses a series of resistors to control the input voltage and set the output voltage to the desired level. In addition, it also uses a control circuit to ensure the stability of the output voltage. This circuit monitors the output voltage and keeps the voltage at the desired level. As the input voltage changes, the resistor network will adjust accordingly and the output voltage will remain constant.

In order to start the regulator, a certain voltage, called the “start up voltage”, needs to be applied to the input voltage pin. This voltage must be maintained to at least the minimum operating voltage of the regulator to ensure that it starts to regulate the output voltage. The voltage applied to the input voltage pin is then passed to the resistor network, which further adjusts the output voltage, depending on the input voltage. The output voltage is then passed to the output of the regulator.

Limitations

The MC7805BDTRKG regulator has certain limitations that need to be considered when using it. These include maximum input voltage, output current, and power dissipation. The input voltage must not exceed 50V for proper operation, and the maximum output current must not exceed its rated output current of 1A. Finally, the power dissipation must not exceed its rated power dissipation of 0.7W.

Applications

Due to its low dropout voltage and low power consumption, MC7805BDTRKG regulators are of wide use in various industries. This type of voltage regulator is primarily used in devices requiring input voltages of between 5V and 13V, such as handheld devices, battery-powered circuits, or any other application where low power consumption is critical.

In devices that require a fixed 5V output, such as microcontroller circuits, the MC7805BDTRKG regulator provides a reliable constant voltage output. It is often used as a direct replacement for other voltage regulators in different applications, such as computers, automotive electronics, lighting systems and other portable devices.

Overall, the MC7805BDTRKG is a great choice for any application requiring a stable 5V output voltage and low power consumption, and it is widely used in many electronic devices.

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