S-8521B31MC-ATQT2U

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The S-8521B31MC-ATQT2U is a programmable interleaved Booster DC/DC controller for digital power supply system applications. It is a DC/DC switch controller (PMIC - Voltage Regulators - DC DC Switching Controllers) that offers high performance and robust system design in a cost-effective package. The device provides a complete solution for interleaved boost converters, allowing for the design of synchronous and non-synchronous interleaved boost DC/DC converters.

The S-8521B31MC-ATQT2U supports a wide operating voltage range from 2.7V to 5.5V, and integrates all the necessary functions to construct a complete power supply system. It operates in step-up mode and boosts the output voltage to a higher level than the input voltage with a minimum voltage difference of 0.5V. The output voltage, current, slope and cycle-by-cycle current limit can be programmed from the external control pin using a low-voltage analog voltage or digital pulse-width modulation (PWM) input.

The S-8521B31MC-ATQT2U also features a unique interleaving structure that helps reduce the size, weight and cost of an interleaved boost converter. Interleaving helps ensure the poor efficiency associated with the output current ripple of a single stage DC/DC converter is reduced. Additionally, the device supports an operating frequency range of 300kHz to 1MHz, along with a low quiescent current of 250uA, making it ideal for high-efficiency, low-power applications.

The S-8521B31MC-ATQT2U is designed to provide high performance and reliability. It features dual current limit, which limits both the input surge current and cycle-by-cycle current limit, providing better system protection and operation. Furthermore, the device is equipped with an overvoltage protection feature, which clamps the output voltage when the voltage exceeds the programmable protection threshold. The device also features over-temperature protection, and a built-in soft start, which helps reduce inrush current during start-up.

The S-8521B31MC-ATQT2U is suitable for a wide variety of applications, including LED lighting, smart grid, LED TV, portable electronic devices and industrial equipment. The device provides power-saving features, low noise operation and high efficiency, making it an ideal choice for applications that require high performance and reliability.

In summary, the S-8521B31MC-ATQT2U is a programmable interleaved Booster DC/DC controller for digital power supply system applications. It operates in step-up mode and boosts the output voltage to a higher level than the input voltage with a minimum voltage difference of 0.5V. It also features a unique interleaving structure that helps reduce the size, weight and cost of an interleaved boost converter. The device supports an operating frequency range of 300kHz to 1MHz and a low quiescent current of 250uA, making it ideal for high-efficiency, low-power applications. The device also features dual current limit, overvoltage protection, over-temperature protection and a built-in soft start, making it the ideal choice for applications that require high performance and reliability.

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