SG7805K

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SG7805K is a linear voltage regulator integrated circuit (IC) with a positive output voltage of 5 volts, hence it is called as 5V regulator. The SG7805K is a three-terminal voltage regulator with an adjustable voltage range of 1.25V to 10 volts. This voltage regulator is widely used in computer systems, video cards, and other electronic equipment for power supply regulation and voltage control.

The SG7805K series of voltage regulators works on the principle of voltage regulation. It works by controlling the potential difference between a reference voltage and the output voltage. This reference voltage is maintained throughout the operation of the voltage regulator, irrespective of changes in the load current. The reference voltage is generated by a voltage divider circuit using two resistors at the reference pin of the regulator. If the load current is increased, the output voltage tends to become lesser than the reference voltage. This decrease in output voltage causes an increase in the voltage drop across the emitter-base junction of the regulating transistor. This increase in voltage drop is detected by the monitor transistor and it increases the current flowing through the regulating transistor. This increase in current increases the voltage drop across the output transistor and thus increases the output voltage. The entire process to maintain the output voltage is done continuously and automatically.

SG7805K is available in the TO-220 and D-Pak packages. It is usually used for applications requiring a minimum voltage dropout of 0.4 volts. The maximum output current of the SG7805K is up to 1.2A and maximum operating temperature range is 250 degrees Celsius. This voltage regulator has a wide range of application in consumer, telecom, computer and industrial power systems. It is commonly used for regulating the output of battery and AC/DC power supply.

SG7805K is used for regulating power supply in various systems and equipment because of its low drop-out voltage, great stability and accurate output voltage regulation. It is also very efficient and it can provide a steady and clean output voltage even in noisy applications. SG7805K can also provide good line and load regulation and can also provide good load transient response.

The key feature of SG7805K is its ease of use. It has an adjustable output voltage range of 1.25V to 10V and can be programmed to output a specific voltage by simply connecting two resistors at its reference pin. This ensures that the output voltage can be adjusted for compatibility with the different application requirements and it also ensures that the output voltage is always stable and accurate. The output of the SG7805K is also kept stable by its dynamic regulation loop which continuously monitors the output voltage and corrects any drift it encounters.

The SG7805K is a highly reliable, efficient and cost-effective voltage regulator. With its wide range of operating temperature and adjustable output voltage, it is suitable for a wide range of applications, from consumer products to industrial equipment. The adjustable output range and stable and clean output voltage make it a very popular choice for voltage regulation of power supply systems.

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