LM2574N-005G

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The LM2574N-005G is a monolithic integrated circuit ideally suited for a wide range of applications requiring up to 5 A of output current. It is specifically designed to provide a wide range of very low noise, low input voltage operation, high efficiency, and excellent dynamic response. The device is useful for a wide variety of power management applications such as simultaneously recharging to two batteries, adjustable voltage/current applications, such as LCD backlighting, or adjustable frequency power conversion.The LM2574N-005G device is classified as a DC-DC Switching Regulator. It is a member of a family of voltage regulation components consisting of a low-dropout (LDO) linear regulators and a step-down and step-up switchers. The LM2574N-005G is a step-down (buck) switching regulator. It accepts an input voltage range of 5V to 35V and provides an adjustable output voltage of 0.8V to 29V with an accuracy of ± 5%. It can provide a maximum output current of 5A over the required range of input/output voltages. The LM2574N-005G features a four-terminal design. The input voltage is applied to the Input pin, commonly referred to as VIN. The output voltage is connected to the Output pin, typically referred to as VOUT. The power ground (PGND) pin provides a reference from which the output voltage is derived. This reference is then connected to the external load. The Control pin (CTL) is used to program the output voltage through either a resistor (R1) or an external signal source.The working principle of the LM2574N-005G device is fairly straightforward. It acts as a switch between the input and output voltage by connecting and disconnecting, depending on the condition of the control signal. The output voltage is derived from two components: the input voltage and a feedback voltage, which provides a precise reference voltage to the output. When the input voltage is greater than the feedback voltage, the device connects the input voltage to the output and provides a constant output voltage. When the input voltage is lower than the feedback voltage, the device disconnects, thus reducing the power dissipation, improving efficiency, and protecting the output voltage from exceeding the feedback reference voltage.The LM2574N-005G is designed to operate between 5V to 35V input and is capable of delivering up to 5A output current. It is versatile, highly efficient, and is ideal for applications requiring low output voltage, low noise and high efficiency. This makes it an ideal choice for a wide range of power management applications, including automotive, telecom, and industrial applications.

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