MP4558DQ-LF-Z

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Function:	Step-Down
Output Configuration:	Positive
Topology:	Buck
Output Type:	Adjustable
Number of Outputs:	1
Voltage - Input (Min):	3.8V
Voltage - Input (Max):	55V
Voltage - Output (Min/Fixed):	0.8V
Voltage - Output (Max):	52V
Current - Output:	1A
Frequency - Switching:	Up to 2MHz
Synchronous Rectifier:	No
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	10-VFDFN Exposed Pad
Supplier Device Package:	10-QFN (3x3)

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PMIC - Voltage Regulators - DC DC Switching Regulators

The MP4558DQ-LF-Z is an advanced DC-DC switching regulator that can be used to regulate the output voltage of a variety of applications. This device is suitable for regulating both linear and switching power supply circuits, and is able to provide higher efficiency, accuracy and stability than traditional designs. The MP4558DQ-LF-Z has a number of features that make it suitable for numerous applications, including high-efficiency, wide input voltage range, high-side and low-side power MOSFETs and high peak current capabilities.

Application Field

The MP4558DQ-LF-Z is an ideal voltage regulator for any application that requires a highly efficient, low noise, fast response and reliable power source, such as automotive, industrial, or telecoms systems. This device can be used as a buck, boost, or inverter converter, and also offers the ability to be used as a level translator. This versatility makes the MP4558DQ-LF-Z an ideal choice for powering a variety of small to medium sized devices.

Working Principle

The MP4558DQ-LF-Z is a high-efficiency and low-noise DC-DC switching regulator. It functions primarily by converting incoming direct current power into either stepped-up or stepped-down voltage output. The internal FET (field-effect transistor) structure of the MP4558DQ-LF-Z ensures high-efficiency, low-noise operation.The MP4558DQ-LF-Z controls the output voltage, current and output transients by utilizing a pulse width modulation (PWM) control method. The PWM controlling the chokes and capacitors allows the correct ratio of input voltage to the desired output voltage to be maintained. The output voltage or current is then regulated by adjusting the on-time of the MOSFETs.The MP4558DQ-LF-Z also features a frequency control loop which uses external components (an oscillator and voltage reference) to adjust the switching frequency of the FETs. This ensures a fast and smooth output current, and also allows for a higher peak current output than traditional designs.

Conclusion

The MP4558DQ-LF-Z is an ideal DC-DC switching regulator for any application that requires a highly efficient, low noise, fast response, and reliable power source. This device is versatile and capable of providing high efficiency, accuracy, and stability compared to more traditional designs. Additionally, its variety of features make it suitable for a wide range of applications and systems.

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