LM2594MX-5.0/NOPB

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The LM2594MX-5.0/NOPB is a DC/DC Step-Down Switching Regulator from the family of PMIC (Power Management Integrated Circuit). This device is designed to provide low cost and low noise parts for a wide variety of applications, with features such as overvoltage protection and high efficiency.

The LM2594MX-5.0/NOPB design features a low input voltage range of 4 V to 52 V, a 5 A peak output current, and a 5 MHz switching frequency, allowing for a high frequency design with a small overall size. It uses a voltage feedback loop that accurately regulates the output voltage over the full input range and temperature range. Both the current sense and soft start of the device are adjustable, enabling the designer to optimize the device performance to the application.

Its applications include powering MCUs and FPGAs in industrial, telecom, LCD displays, point-of-load, and other power-sensitive circuits. Moreover, this device is also suitable for use in many other DC/DC step-down applications including voltage converters, industrial supply rails, automotive. and battery-powered applications.

The LM2594MX-5.0/NOPB works on the main principle of PFM (pulse frequency modulation). In this type of topology, the output voltage is regulated via a feedback loop and then compared to an externally programmed reference voltage, with an internal error amplifier. Through the controller, the error signal is converted into a pulse width & frequency modulation (PWM/PFM) signal, controlling switching of the internal MOSFET. The LM2594MX-5.0/NOPB device provides an adjustable frequency compensation in order to optimize the control loop for any given load range. As load increases, the frequency increases to maintain the output voltage at its programmed setting. At light loading conditions, the operating frequency is low to increase the efficiency of the system.

The LM2594MX-5.0/NOPB device offers advanced features like overvoltage protection, overcurrent protection and short circuit protection, to protect against damage due to incorrect operation or malfunction. Other advantages of the device include its high conversion efficiency, low power consumption and small form factor. With these advantages, this device is suitable for a wide range of applications and is a cost-effective solution for a variety of power-management challenges.

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