MP6402DN-LF

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MP6402DN-LF Application Field and Working Principle

MP6402DN-LF is a robust linear voltage regulator manufactured and marketed by Monolithic Power Systems Inc. It belongs to the voltage regulator family of products in the category of PMIC - Voltage Regulators - Linear. This voltage regulator chip has been designed to maintain a desired output voltage consuming a relatively low quiescent current and user-friendly features. It is mainly used in automotive and industrial applications requiring very low power consumption and reliable performance along with adjustable voltage output voltage.

MP6402DN-LF Features

MP6402DN-LF, sometimes referred to as MOS-LF, provides a highly-integrated solution with several distinctive features. It offers a very low quiescent current consumption of 25uA, and can provide output up to 3.5A current with over temperature and over current protection built in. Furthermore, it offers high efficiency for applications requiring large currents up to 95%. Finally, the output voltage of the MP6402DN-LF can be easily adjusted over a wide range with an external resistor divider. This makes it easy to use with other components, or in applications where the supply voltage needs to be constantly readjusted in order to maintain a desired output voltage.

MP6402DN-LF Application Fields

MP6402DN-LF is ideal for automotive and industrial applications due to its low power consumption and highly regulated output voltage. It is a perfect choice for any application where reliable performance and adjustable output voltage are needed. Common applications include automotive audio systems, automotive CAN-bus systems, Industrial Automation, Robotics, HVAC systems, medical devices, AC/DC power conversion intelligently and many other power management and control applications.

MP6402DN-LF Operating Principle

The operating principle of MP6402DN-LF is based on a linear regulation in order to maintain a fixed output voltage even when input voltage varies. This design makes good use of the low-cost linear regulator with the benefits of an adjustable output voltage and small footprint. The MP6402DN-LF operates in two stages; the first stage is an adjustable voltage reference followed by a pass transistor. The voltage reference is adjustable with an external resistor divider and can provide over temperature and over current protection.

The first stage acts as a voltage reference by providing a reference voltage that is independent of the input voltage. This reference voltage is connected to the gate of the pass transistor. The pass transistor then regulates the output current in order to keep the output voltage constant and within a certain tolerance. This regulation system ensures that the output voltage remains stable despite input voltage variations.

In order to make use of the voltage reference circuit, an external resistor divider is required. The resistor divider is used to adjust the output voltage over a wide range depending on the application requirements. The output voltage is then regulated by the pass transistor, which ensures that the voltage remains stable despite variations in the input supply.

Conclusion

MP6402DN-LF is a robust linear voltage regulator that offers a highly-integrated solution with several distinctive features such as a low quiescent current consumption and adjustable output voltage. It is an ideal choice for applications requiring reliable performance, adjustable output voltage, and low power consumption. Common applications include automotive audio systems, automotive CAN-bus systems, Industrial Automation, Robotics, HVAC systems, medical devices, AC/DC power conversion intelligently and many other power management and control applications.

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