NX2124CSTR

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The NX2124CSTR is a DC-DC switching controller designed for step-down and buck applications. This device features a low-power design that delivers improved efficiency, lower RDS(on) and higher frequency operation compared to traditional DC-DC switching controllers.It employs a fixed-frequency, peak current mode control with dual N-channel MOSFET options including fixed voltage or adjustable voltage versions. As well, there is protection from short-circuits and thermal overload protection for safer operation.

In addition to delivering high efficiency, the NX2124CSTR offers further power savings with a low standby current of 6A. This controller is designed to minimize the number of external components which simplifies design and reduces cost.

The NX2124CSTR is an ideal solution for applications such as embedded wireless communication, portable medical instrumentation, battery-powered consumer electronics and monitoring systems. Its wide input range of 3.0V to 32V and low operating current makes it suitable for a variety of applications.

The NX2124CSTR uses a peak current mode control architecture with a constant on-time ramp compensation loop to keep the current flow in the switch at a set level. It works by first measuring the voltage across the inductor, then comparing it to the internal reference voltage. When the voltage is higher, a low current demand is sent to the N-MOSFET switch. When the voltage is lower, it increases the current demand and turns on the switch for a longer duration.

This controller also features a number of built-in protection features, such as an over-current protection that limits the peak switch current, an over-voltage protection to prevent the output voltage from going too high, and an under-voltage protection to shut off the device if the input voltage drops too low. In addition, the device has thermal shutdown protection to prevent overheating of the chip. These features together help make the NX2124CSTR a reliable and safe device.

In conclusion, the NX2124CSTR is a reliable and efficient DC-DC switching controller for step-down and buck applications. Its low power design, wide input range, low operating current, and built-in protection features make it suitable for a variety of applications such as embedded wireless communication, portable medical instrumentation, battery-powered consumer electronics, and monitoring systems.

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