The chip four-pin pressure regulator is also known as the SOT-223 pressure regulator, and its principle is basically the same as other types of pressure regulators. By stabilizing the voltage at a fixed value, the voltage regulator ensures that the output voltage always remains stable when the input voltage changes. The common SOT-223 regulator consists of three main parts: a voltage stabilizer, a voltage reference, and an amplifier.
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When the input voltage changes, the voltage stabilizer adjusts the input voltage to a stable output voltage by using a voltage regulator diode and a transistor amplifier circuit. At the same time, the voltage reference section applies a fixed reference voltage to the circuit to ensure that the output voltage is always maintained at a stable level. The amplifier part helps maintain the stability of the circuit, responding quickly to changes in the output voltage and adjusting the input voltage.
The chip four-pin voltage regulator, also known as SOT-223 package voltage regulator, is a commonly used integrated circuit, which is used in the circuit to limit voltage interference and ensure the stable operation of the circuit.
The principle is to use the voltage regulator diode and transistor, through the voltage detection and feedback circuit to control the output voltage of the regulator tube, so that it can keep in the set stable voltage range. When the load changes or the input voltage changes, the voltage regulator can automatically adjust the output voltage to maintain stability.
In practical applications, the patch four-pin voltage regulator is usually connected by welding to the circuit board. It has the advantages of small size, low power consumption, easy installation, etc., and is suitable for DC regulated power supply circuit in various electronic equipment.
The chip four-pin voltage regulator can stabilize the output voltage and maintain the stable operation of the circuit
The chip four-pin voltage regulator principle is based on the Zener effect.
When the electric field strength in the unidirectional conductive semiconductor material reaches the critical value, Zener effect will be produced, resulting in Zener breakdown and sharp increase of current. The voltage drop is stabilized at the reverse breakdown voltage value of the Zener diode, so that the voltage at both ends of the regulator is maintained at a stable value.
The patch four-pin voltage regulator can effectively remove voltage clutter and current clutter in the circuit, improving the circuit stability and reliability. It is one of the essential components in many electronic devices such as integrated circuits, communication circuits and precision instruments
Voltage converter tube, voltage regulator tube, generally used for 5V to 1.8V circuit of liquid crystal driver board