LM2575HVMX-15/NOPB

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The LM2575HVMX-15/NOPB is a low-cost, adjustable 3-terminal step-down switching regulator that is best known for its low-voltage features, robust performance, and simple uses. It is a DC to DC converter suitable for medium-power applications, such as point-of-sale terminals, medical devices, motor control, and cellular phones. It is especially well suited for applications where ultra low power dissipation and low-voltage start up capabilities are needed.

The switching regulator is composed of two terminal blocks: an input connector and an output terminal. The input terminal supplies an input voltage range from 5V up to 28V, while the output terminal is adjustable from 1.225V to the input voltage. Its maximum output current is 1.5A. The switching regulator can also provide current limiting, thermal protection, and short-circuit protection.

The LM2575HVMX-15/NOPB application field involves driving small motors and/or lights, like in small drones or robots. It also supports consumer applications, such as remote-controlled toys and other medium-power applications.

The working principle of the LM2575HVMX-15/NOPB relies on an internal voltage reference, an energy reservoir capacitor, and a current-regulator feedback circuit. The basic function of the regulator is to maintain a fixed output voltage. It works by varying the duty cycle of an internal switching element to adjust the power output to the load. The current regulator feedback circuit monitors the output voltage and regulates it by varying the duty cycle of the power switches.

The step-down regulator also has a built-in soft-start function to prevent overloading from inrush current in the output stage. It works by slowly ramping up the output voltage from 0V to the set point after the device is powered on. This allows for stable start-up, even with capacitive loads, avoiding unusual power surges.

The step-down switching regulator is designed to be small, robust, and efficient. It is designed to offer high power efficiency and low external component count. It also offers excellent line and load regulation as well as transient performance.

Overall, the LM2575HVMX-15/NOPB is an adjustable 3-terminal step-down switching regulator with low power dissipation and low-voltage start up capabilities, suitable for driving small motors, consumer applications, and other medium-power applications. It is a robust, efficient, and simple device that offers excellent line and load regulation as well as transient performance, making it perfect for a variety of medium-power applications.

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