MP20042DG-SJ-LF-Z

Voltage Dropout (Max):	0.25V @ 200mA (Typ), 0.25V @ 200mA (Typ)
Supplier Device Package:	8-QFN (2x2)
Package / Case:	8-TFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	72dB ~ 47dB (100Hz ~ 100kHz)
Current - Output:	200mA, 200mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V, 3.3V
Voltage - Input (Max):	6V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction:

The MP20042DG-SJ-LF-Z is a linear voltage regulator that is fitted with PMIC (Power Management Integrated Circuit) integration technology. This product is used in consumer electronics and low-power devices requiring efficient power management. It is part of a wide range of voltage regulators made by Monolithic Power Systems and it is designed in such a way that it gains high power and reliability while being cost-effective.

Application Field:

The MP20042DG-SJ-LF-Z is suited for a range of consumer electronics applications, such as smart mobile phones, digital cameras, e-books, portable media players, PDAs, and networked applications etc. It also works well in industrial and automotive systems that need small form factor voltage regulators with high reliability and accuracy. This product is designed to accommodate the needs of low power, small-sized devices.

Working Principle:

The MP20042DG-SJ-LF-Z works according to a linear regulation principle. Linear regulation works by regulating the output of the voltage regulator to a predetermined value. It consists of several components that work together to ensure the correct voltage output. First, the voltage regulator consists of a voltage reference device which sets the desired output voltage. The output is then compared to the reference voltage by the error amplifier. If the output voltage is below the required value, the error amplifier will send out a current to the pass transistor to raise the output voltage. On the other hand, if the output voltage is higher than the required value, the error amplifier will reduce the current sent to the pass transistor to lower the output voltage.The pass transistor is the main component that controls the output voltage of the regulator. It features a low impedance feedback connection at its input which is connected to the error amplifier output. The error amplifier changes its output current in order to regulate the voltage to the required level. This mechanism has the advantage of maintaining the output voltage of the voltage regulator at a constant value regardless of any changes in input and output conditions.A typical linear voltage regulator is composed of three main components: the voltage reference, the error amplifier, and the pass transistor. These components work together in order to ensure that the output voltage is properly regulated. As mentioned above, the error amplifier will sense the difference between the reference voltage and the actual output voltage and is then responsible for controlling the pass transistor to adjust the output voltage to the desired level.Additionally, the MP20042DG-SJ-LF-Z also comes with additional features such as an integrated overvoltage protection circuit and a low dropout voltage. The overvoltage protection circuit prevents the output voltage from exceeding a predetermined value. This prevents any potential damage to the device due to a sudden increase in input voltage. The low dropout voltage ensures that the output stays within the specified range even when there is a drop in input voltage.

Conclusion:

The MP20042DG-SJ-LF-Z is a linear voltage regulator which is fitted with PMIC technology. It is highly suitable for low-power applications and efficient power management. It is comprised of three components: the voltage reference, the error amplifier, and the pass transistor, which all work together to regulate the output voltage to a predetermined level. Other features such as an integrated overvoltage protection circuit and a low dropout voltage extend the device’s capability and reliability as a voltage regulator.

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