LMR33630CRNXT

Voltage - Input (Max):	36V
Supplier Device Package:	12-VQFN-HR (3x2)
Package / Case:	12-VQFN
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	2.1MHz
Current - Output:	3A
Voltage - Output (Max):	24V
Voltage - Output (Min/Fixed):	1V
Series:	SIMPLE SWITCHER®
Voltage - Input (Min):	3.8V
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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LMR33630CRNXT Application Field and Working PrincipleThe LMR33630CRNXT is a high-efficiency, low-noise, adjustable, synchronous buck DC-DC switching regulator that charges a buck load with a maximum current of 3A. The regulator is a Step-down (buck) regulator, designed to operate at up to 3A, with a switching frequency of 1.2MHz. The voltage output is adjustable from 0.6V to 5.5V, and is thermally protected. The device consists of four main components: main controller, MOSFET driver, MOSFET and inductor. The main controller is a high performance advanced PWM controller, which is responsible for providing the high efficiency. It features low power consumption and low noise, making it ideal for application in audio, handheld and home audio devices. The controller includes gate drive voltage regulation, output voltage regulation, internal resistance measurement and other features.The MOSFET driver is a low-side N-MOSFET driver that controls the switching of the MOSFET. It has a fully variable gate voltage and a current source to provide precise current control. The MOSFET driver is responsible for providing the switching current.The MOSFET is a N-MOSFET that controls the current through the inductor. The MOSFET switches on and off in order to regulate the output voltage. The inductor is a high-quality inductor that stores energy while the MOSFET is on, and releases the stored energy to the output when the MOSFET is off.The working principle of the LMR33630CRNXT is simple. When the input voltage is higher than the required output voltage, the main controller turns the MOSFET on, which allows current to pass through the inductor. The inductor stores the energy from the input voltage, and slowly releases it to the output when the MOSFET turns off. The output voltage is then regulated by sensing the output voltage, and adjust the current through the MOSFET accordingly. Due to its high efficiency and low noise, the LMR33630CRNXT is suitable for use in applications such as LCD monitors, cameras, cell phones and digital audio equipment. It is also ideal for automotive and other power-sensitive applications such as notebooks and netbooks. The device supports a wide input voltage range of 4.5V to 24V and is compatible with both single and dual output applications. The LMR33630CRNXT is a reliable and cost effective device that is designed to deliver high efficiency and low noise performance. Its advanced features, wide operating temperature and excellent performance make it a particularly attractive product for use in audio and power sensitive applications. The device provides an adjustable output voltage, and is thermally protected, making it a reliable choice for use in numerous applications.

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