S-8521B15MC-ATAT2G

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The S-8521B15MC-ATAT2G is a high performance buck DC/DC switching controller designed to provide a compact, low cost solution for voltage regulation applications. It is part of a family of voltage regulators, known as PMIC - Voltage Regulators - DC/DC Switching Controllers. It is suitable for high power applications such as distributed power systems, power supply systems, and automotive applications.

The S-8521B15MC-ATAT2G is a 4-phase step-down controller, which provides a maximum output current of 6.2A. The device features an adjustable operating frequency up to 250kHz, enabling the design of a low noise, high efficiency power solution. Integrated PWM control and high switching frequency allow for a smaller inductor and capacitor size, providing a compact solution. The adjustable operating frequency also makes it easier to design multi-channel solutions, while the current limit protection and thermal shutoff features ensure reliable protection against overload and over temperature.

The S-8521B15MC-ATAT2G features comprehensive protection functions. Over voltage protection (OVP) is triggered when the output voltage rises to a set threshold, and automatically shuts off to prevent damage to the load or power module. Under voltage protection (UVP) is activated if the output voltage falls below the set threshold, and safely restores the system operation. Over current protection (OCP) provides current limit protection to prevent short circuits, and thermal shutoff is activated if the junction temperature exceeds a certain limit.

The S-8521B15MC-ATAT2G also offers a range of diagnostics and monitoring functions. Burst mode operation is employed to reduce input power consumption during light load conditions. Input voltage and output voltage sensing and monitoring provide the output voltage level and alarm the system designer should it rise or fall to levels that are hazardous to the system. A Soft-Start function enables a controlled ramp up of the output voltage and avoids high surge current when the device starts up.

In addition, the S-8521B15MC-ATAT2G features adjustable output voltage ranging from 0.9V - 1.8V and adjustable dead time up to 150ns, providing designers with a great deal of flexibility in the design process. The device is also capable of supporting an asynchronous MOSFET reverse current protection circuit, providing an additional layer of safety should the system experience a fault.

All of these features make the S-8521B15MC-ATAT2G a highly desirable choice for a wide range of voltage regulation applications. It is ideal for distributed power systems, including industrial, automotive, defense, and aerospace applications. It is also suitable for multi-channel solutions, such as multi-rail power supplies, voltage converters, and lighting applications.

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