SPX3819M5-L-3-3/TR Integrated Circuits (ICs)

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• Introduction: SPX3819M5-L-3-3/TR is a Linear Voltage Regulator PMIC, which is designed to provide a constant output voltage of 3.3 volts from an input voltage ranging from 5 volts to 15 volts. The device is integrated with frequency compensation, overload protection, and thermal shutdown, allowing for it to have increased robustness and current capacity than other linear regulator designs.
• Application Fields: The SPX3819M5-L-3-3/TR can be used in a wide variety of applications, including powering various types of electronic components, such as an LCD, hard disk drive, and fan motors. In addition, it is suitable for battery power applications, as it has an input voltage range of 5 volts to 15 volts, which allows it to regulate the current of batteries with various configurations. It is also effective in temperature control applications, as its design provides thermal protection.
• Working Principle: The SPX3819M5-L-3-3/TR operates by comparing the internal 3.3-volt reference voltage to the control voltage (VIN). If the voltage difference between these two is greater than 0.4 volts, the output current will begin to pass through the pass device. This will produce a voltage drop between the output and ground terminals until the output voltage is equal to the reference voltage. This voltage regulation principle provides an adjustable output voltage with a constant current during normal operation.

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