MP2361DH-LF-Z

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DC DC switching regulators are an important component of a PMIC (Power Management Integrated Circuit), allowing for the precise manipulation and regulation of an electric power supply, providing more accurate and efficient power versus a traditional linear regulator. The MP2361DH-LF-Z is a high-performance synchronous buck switching voltage regulator from Monolithic Power Systems (MPS), offering a wide range of capabilities and features which are ideal for numerous application fields.

Features and Benefits

The MP2361 offers an impressive array of features and benefits. It is a “single-chip”, fully integrated synchronous buck regulator that takes an input voltage of 4.5V to 28V, and can output voltages as low as 0.6V with a 2MHz operating frequency and up to 5.5A of output current. It features high accuracy switching current detection, adjustable Soft Start and high-efficiency step-down conversion, allowing for the accurate and efficient regulation of voltage. It also offers a range of protection options, such as input under voltage lock out, output over voltage protection, cycle-by-cycle current limiting, thermal shutdown, OTS-D (Open Thermal Sensor and Discharge) and over temperature protection.

Applications

The MP2361 is ideal for a wide range of applications, including computing, communications, gaming and ASICs, where accurate and efficient voltage regulation is required. It is suitable for use in ultra-portable devices, including notebooks, netbooks, and tablets, while offering a maximised efficiency rate of up to 95%. It is also well-suited for use in servers, computer motherboards, set-top boxes, digital TVs and digital gaming consoles, as well as industrial automation equipment and LED lighting applications.

Working Principle

The MP2361 operates using a synchronous step-down buck converter design. It functions by using a switching element — a transistor or an active device, such as an insulated gate bipolar transistor (IGBT) — to switch between two power supplies. When the transistor is activated, it places the input voltage across its drain and source, providing the required output voltage. The power is then regulated by controlling the duty cycle and switching frequency of the transistor.

The MP2361 operates in a continuous conduction mode (CCM), meaning that it maintains a continuous flow of current throughout the inductor and produces a duty cycle proportional to the voltage difference between the input and output. In addition, it uses a synchronous rectification control in order to improve efficiency.

Conclusion

The MPS MP2361DH-LF-Z is a high-performance synchronous buck switching voltage regulator, capable of operating at 4.5V to 28V input with an output voltage as low as 0.6V. It features high accuracy switching current detection, adjustable Soft Start and high-efficiency step-down conversion, as well as a range of protection options. Its wide range of application fields, including computing, communications, gaming and ASICs, make it an ideal choice for users in need of accurate and efficient voltage regulation.

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