MP4470GL-Z Integrated Circuits (ICs)

Voltage - Input (Max):	36V
Supplier Device Package:	20-QFN (3x4)
Package / Case:	15-TFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	200kHz ~ 1MHz
Current - Output:	5A
Voltage - Output (Max):	32.4V
Voltage - Output (Min/Fixed):	0.8V
Series:	--
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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MP4470GL-Z – Application Field and Working PrincipleMP4470GL-Z is a type of DC-DC switching regulator, widely used in industrial and consumer electronics. This device features a wide input voltage range from 2.6V to 27V and low quiescent current of 4.25µA in Eco Mode, and is available in an ultra-compact 3mm × 3mm WDFN-10L package, making it perfect for portable applications.The MP4470GL-Z, with high efficiency and fast transient response, provides excellent dynamic performance, making it a suitable choice for many industrial and consumer devices. It also provides excellent regulation accuracy over a wide range of line and load conditions, offering both a continuous output current of 500mA and a peak output current of 1A, making it a powerful, yet efficient, solution.This device includes both short circuit protection and thermal protection and is capable of delivering up to 3A of peak current into a low impedance load with no additional external components, making it an ideal choice for applications where power needs to be delivered rapidly and safely. Its reverse current limiting feature importantly adds protection for the output stage of a regulated power supply.The working principle of a switching regulator is to control the time-varying duty cycle of an AC waveform, which is generally delivered to the converter’s switch via a transistor. The duty cycle of the waveform is then adjusted in order to maintain the desired output voltage - and thus, the device\'s power output - at any given environmental and load conditions.The MP4470GL-Z is equipped with an interleaved soft-start circuit, which greatly reduces start-up current surges and thus helps to improve the inrush current and reduce overall power dissipation during start-up.The device also has an internal synchronous rectifier, which enables a low loss power conversion and an adjustable operating frequency from 500kHz to 2MHz, allowing the user to adjust the switching frequency as needed to meet their specific application requirements.The MP4470GL-Z is designed to minimize external components and improve circuit layout flexibility, making it an ideal solution for applications such as general power supplies, portable media players, battery charging, and consumer electronics. In addition to its superior efficiency, the MP4470GL-Z also saves design space and system cost by not requiring any external power MOSFETs or Schottky diodes. This device also provides excellent EMI performance and improved ESD tolerance due to its high switching frequency, making it an excellent choice for high-density portable applications.In summary, the MP4470GL-Z is a highly integrated switch-mode power supply, which provides high efficiency, low quiescent current and small size, while also offering excellent circuit design flexibility. The device is an ideal choice for portable and consumer applications, making it a powerful and efficient solution for a variety of applications.

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