LM2575S-12

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The LM2575S-12 is a DC/DC switching regulator with several features that make it an ideal tool for applications requiring noise reduction and high-efficiency conversion levels. This regulator contains a wide range of products with various input and output voltages, load current ratings, output current levels, and peak-current-operating capability. The LM2575S-12 also offers current-mode control to ensure stable and accurate performance under wide-range load conditions.

The LM2575S-12 provides a single output voltage and current level at 12v DC input, ideal for a wide range of power-supply-related applications. The regulator has an efficient synchronous rectification circuit, which helps to minimize end-product power consumption and prolongs the output current pulses. A series of output capacitors forms a loop that acts as a low-pass filter, providing improved noise suppression and high output ripple rejection. This regulator also incorporates a built-in overload and thermal protection circuits, which prevent the device from being damaged due to excessive overload conditions or high-temperature levels.

The wide operating frequency range of the LM2575S-12 allows for the selection of the switching frequency that is best suited for a given application. The regulator supports several different switching frequency settings, including 38 kHz, 200 kHz, 600 kHz and 1.2 MHz. The switching frequency can be adjusted using internal voltage-level control and external resistor inputs.

The LM2575S-12 device incorporates a unique power-on-reset circuit that ensures controlled operation, even after power-on occurs. An Enable pin is used to control the power-on/power-off sequence and ensures reliable operation of the regulator while preventing any false triggering. The enable pin can be either an active-low (high-impedance) or an active-high (operational) feature.

The LM2575S-12 also contains internal soft-start circuitry and adjustable current limiting. The soft-start circuitry provides a controlled rise in output voltage, while the current-limiting provides accurate current protection against output overloading. The LM2575S-12 is available in several different packages, allowing for easy integration into various designs.

Overall, the LM2575S-12 is a high-quality, cost-effective DC/DC switching regulator with various features that make it well-suited for a variety of applications requiring an efficient and noise-free power-supply unit. Its wide operating frequency and voltage-level control, combined with its over-current, over-voltage, and thermal protection features, make the LM2575S-12 an essential component for power-supply designs.

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