MP4561DQ-LF-P Integrated Circuits (ICs)

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:	1.5A
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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<p>The MP4561DQ-LF-P, a member of the MP45xx family of DC-to-DC switching regulators, is an integrated power management device with an onboard controller designed for high efficiency and low noise operation. It consists of a power switch, a power amplifier, a startup circuit, a light load detection circuit, a voltage pre-regulator and a power stage. This power management integrated component can be used to power a wide range of applications, including, but not limited to, smartphones, tablets, industrial equipment, medical devices, and power tools, by providing a stable supply of regulated voltage from an unregulated source.</p><p>The MP4561DQ-LF-P’s application field of use spans from providing output voltage for LCD, camera sensors, audio amplifiers, and Blu-ray recorders to supplying power for motor drivers, Wi-Fi modems, aerospace or military applications, or any other reliable systems that need a stable voltage supply. This integrated component is capable of delivering a continuous output power of up to 6A and an input voltage range from 4.5V up to 24V. Additionally, it offers a low noise operation, high efficiency, and a solution size that is smaller than using discrete components.</p><p>The MP4561DQ-LF-P operates with best efficiency in a step down (BUCK) mode. This integrated component works in two stages during its operations. The first stage is the power stage, which includes the power switch, power amplifier, and startup circuit. Once the voltage of the power source is higher than the output voltage, the power switch will start to conduct and the output voltage will be lower than the input voltage.</p><p>The second stage is the light load detection circuit, which works in conjunction with the power amplifier to regulate the output voltage. The light load detection circuit senses when the load has dropped below the set value and decreases the output voltage accordingly. This ensures that the output voltage from the power source is stable and constant, even at light load conditions.</p><p>Another key feature of the MP4561DQ-LF-P is its voltage pre-regulator. Since the pre-regulator is responsible for providing a constant level of voltage to the power amplifier and startup circuit throughout its operation, it eliminates the need for external components such as voltage regulators. This allows for a more compact design, increasing the overall efficiency of the circuit. </p><p>Additionally, the integrated component offers programmability for soft start, over-voltage protection, soft stop, and over-temperature protection. These functions protect the system from any possible damage due to incorrect voltage or temperature levels. Therefore, it is suitable for long-term reliable operations in various applications.</p> <p>The MP4561DQ-LF-P offers a wide range of features and functions, making it an ideal choice for high efficiency, low noise operation. Its application field is vast, offering a reliable voltage supply for many applications. Additionally, the light load detection circuit makes it flexible and adjustable to match any load requirements, while the pre-regulator eliminates the need for extra components such as voltage regulators, offering a solution size that is smaller than using discrete components.</p>

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