MP3426DL-LF-Z

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Function:	Step-Up
Output Configuration:	Positive
Topology:	Boost
Output Type:	Adjustable
Number of Outputs:	1
Voltage - Input (Min):	3.2V
Voltage - Input (Max):	22V
Voltage - Output (Min/Fixed):	3.2V
Voltage - Output (Max):	35V
Current - Output:	6A
Frequency - Switching:	300kHz ~ 2MHz
Synchronous Rectifier:	No
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	14-VFDFN Exposed Pad
Supplier Device Package:	14-QFN (3x4)

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## IntroductionMP3426DL-LF-Z is an integrated DC-DC switching regulator manufactured by Monolithic Power Systems (MPS). It is part of their wide selection of integrated DC-DC switching regulators which are used in various industrial and consumer applications. MPS has a commitment to offering customers highly efficient, robust power solutions. This application note will provide an overview of the application field and working principles for the MP3426DL-LF-Z.## Application FieldsThe MP3426DL-LF-Z is part of a family of integrated DC-DC switching regulators that are designed for high-efficiency, low-noise power management. These devices are designed for a variety of applications that include cell phones, tablets, automotive, industrial, and military and aerospace systems. The MP3426DL-LF-Z is uniquely suited for applications where space is at a premium. It is a compact, integrated device that combines switching, regulation, compensation, protection, and system control into a single package. This makes it ideal for portable applications where size and weight are critical factors.The MP3426DL-LF-Z also offers a wide variety of features that make it well-suited to high-power and high-reliability applications. It features a 1.2MHz switching frequency, low-noise and low-distortion ripple, input-output voltage range of 0.8V to 5.5V and a maximum power consumption of 2.5W. It is also built with an on-chip voltage ramp controller for efficiency and a protection circuit for overvoltage, current, power, and temperature.## Working PrinciplesThe MP3426DL-LF-Z is designed to provide a low-noise, high-efficiency, low-dropout, adjustable step-down conversion. It uses a synchronous rectifier-switching topology, which results in a low-noise, low-distortion ripple. It also has an adjustable-frequency current-mode control to ensure fast transient response and the ability to regulate output current and power.The MP3426DL-LF-Z uses a voltage-mode control with an adjustable voltage ramp controller. This ensures high efficiency at light and heavy loads and delivers a fast transient response. The on-chip current-limit protection ensures that the power device is not damaged if the load current exceeds the safe operating limits. The device also features an over-voltage, over-current, and over-temperature protection circuit, ensuring reliable operation and safe operation in extreme conditions.## ConclusionThe MP3426DL-LF-Z is an integrated DC-DC switching regulator from Monolithic Power Systems that is designed for high-efficiency, low-noise power management. It is ideally suited for space-constrained applications and offers a wide variety of features that make it well-suited for high-power and high-reliability applications. The device uses a synchronous rectifier-switching topology and an adjustable-frequency current-mode controller, making it an excellent solution for a wide range of applications.

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