MP2325GJ-Z

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MP2325GJ-Z Application Field and Working Principle

The MP2325GJ-Z is a switching regulator from Monolithic Power Systems (MPS). It belongs to the family of DC-DC regulators and is designed for portable equipment, such as laptops and mobile phones, as well as LED lighting.

The MP2325 switch regulator has a wide input voltage range of 2.7V to 5.5V. The output is regulated to any voltage between 0.8V and 5V, with an output current of up to 2.5A. The MP2325 integrates two P-channel MOSFETs, which allows it to deliver efficient load-switching performance when changing between two output voltage levels.

Working Principle

The MP2325 is a non-synchronous buck regulator that uses a fixed frequency and pulse-width modulation (PWM) to control the output voltage. The PWM signal is generated internally by the IC, so it requires no external components. The MP2325 uses a current mode control scheme. This means that it monitors the output current and adjusts the duty cycle of the PWM to ensure that the correct voltage is maintained.

The MP2325 has an inner loop and an outer loop. The inner loop is used to maintain a constant output current, and the outer loop is used to maintain a constant output voltage. The inner loop is controlled by an internal compensation network and features cycle-by-cycle current limit protection. The outer loop is controlled by an external resistor and capacitor network, which is used to set the voltage regulation point.

The MP2325 also features programmable soft-start and over-current protection. Both of these features help protect the IC and the load from any sudden surges in current or voltage. In addition, the MP2325 also includes an integrated power transistor that can be used to provide power isolation between the input and output.

Applications

The MP2325GJ-Z is ideal for applications that require a compact, high efficiency, and low-noise regulator. It is used in a wide range of portable devices, such as laptops and tablets, as well as LED lighting applications. It can also be used in automotive applications, such as in-car entertainment systems and telematics systems.

The MP2325GJ-Z is a very versatile and reliable DC-DC regulator. It features a wide input voltage range that can operate from 2.7V to 5.5V, and it can deliver up to 2.5A of output current. It also features advanced protection features, such as current limit protection, as well as programmable soft-start and over-current protection, making it an ideal choice for a wide range of applications.

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