MP2459GJ-P

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The MP2459GJ-P voltage regulator is a member of DC DC switching regulator family, and it is an ideal solution for power management in various types of applications. It is designed to provide fast and reliable power regulation with below features:

1.Wide 6V~20V input voltage range and 3.3V fixed output voltage;

2.High efficiency up to 95%, power degradation is less than 7% under a wide range load;

3.Low BOM cost with only 3 external components, all surface mount type;

4.Low output ripple - Less than 30mV, compliant with latest industry regulations;

5.Wide operating temperature range, from -40℃ to 85℃;

6.Built-in over-current protection and over-temperature protection.

The protected MP2459GJ-P provides a wide range of applications, such as embedded systems applications, digital audio player, GPS navigator, display device and other mobile communication devices with high-efficiency and stability.

The working principle of the MP2459GJ-P DC DC switching regulator is that it takes an input voltage of 6V-20V, and then it can provide a stable 3.3V output voltage. It consists of two main parts: the main control IC and the MOSFET. The two main parts can be divided into the power section and the control section.

The power section includes an internal high-side MOSFET and an internal low-side MOSFET. The high-side MOSFET is driven by the output voltage, and the low-side MOSFET is driven by the power switch drive. When the output voltage increases, the power switch drive will increase the MOSFET drain current to reduce the output voltage. And when the output voltage decreases, the power switch drive will decrease the MOSFET drain current to increase the output voltage.

The control section consists of the main control IC and several peripheral circuits. The main control IC is an integrated circuit that can accurately read the output voltage, adjust the power switch drive, and control the power switch to maintain the output voltage constant. The peripheral circuit includes an oscillator, an error amplifier and temperature compensation circuit.

The oscillator is used to generate a fixed frequency, which is used to drive the PWM signal. The error amplifier will compare the feedback voltage to the reference voltage and generate an analog output voltage. The analog output voltage will be used to adjust the power switch drive. And the temperature compensation circuit is used to adjust PWM signal to reduce output ripple when the temperature of the circuit changes.

In short, the MP2459GJ-P DC DC switching regulator is able to generate an output voltage of 3.3V over a wide range of input voltages, using only three external components. It has a high efficiency and low power loss with the protection of over-current, over-voltage, and over-temperature, making it ideal for use in various types of applications.

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