S-8355Q60MC-OXTT2G

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S-8355Q60MC-OXTT2G Application Field and Working Principle

PMIC (Power Management IC) is a specialized circuitry designed for power management of complex electronics and systems. PMICs are typically integrated with a large number of additional components, such as voltage regulators, voltage references, AC-DC converters and power controllers, among others. Among them, Voltage Regulators are directly responsible for converting the input voltage to a value that is usable by the electronic device. The DC DC Switching Controllers such as S-8355Q60MC-OX2T2G are then used to control the output voltage.

S-8355Q60MC-OXTT2G Overview

The S-8355Q60MC-OXTT2G is a Buck-Boost LED Driver IC from Seiko Electronics Co. It is a DC DC Switching Controller & LED Driver which allows efficient LED lighting. It includes a high-speed Buck-Boost regulator, high voltage drive circuit, LED lighting interface and LED dimming functions. It is designed to provide a low power LED lighting solution with high efficiency due to high-speed PWM control. The S-8355Q60MC-OXTT2G is available in a 44-pin QFP package.

Application Field

The S-8355Q60MC-OXTT2G is an ideal choice for applications demanding highly efficient LED lighting solutions. It supports a wide range of applications such as LED street lights, indoor lights, decorative lights, and many others. It also finds its use in industrial and commercial applications such as office lighting, health care lighting, and gaming/imaging lighting.

Working Principle

The S-8355Q60MC-OXTT2G is a Buck-Boost regulator and therefore, it works by either charging or discharging its own capacitor. The Buck-Boost DC-DC converter then routes the current to the output and sources it depending on the relative voltage at the input and output. It can operate in the buck mode, as well as in the boost mode as per the requirement of the application and hence, results in a more efficient power delivery.

Its high-speed MOSFET and PWM-controlled buck-boost relevant circuits help achieve very fast transition times during the transition and interchange between the buck and the boost mode. As the switching is extreme fast, normally at several hundreds of kHz for the Buck-Boost regulator, switching losses are minimized, and less energy is wasted.

The S-8355Q60MC-OXTT2G also has current sensing circuitry which helps in detecting changes in the output current. This enables the IC to detect various fault conditions such as short circuit, overcurrent, and LED open loop, among others. This further ensures accurate output current regulation.

Conclusion

The S-8355Q60MC-OXTT2G is a powerful DC-DC switching controller and LED driver that is designed to provide efficient LED lighting solutions. It is configured in a buck-boost topology and works by either charging or discharging its own capacitor. The high-speed PWM-controlled buck-boost architectures, current sensing circuitry, and the various safety features make it the ideal choice for applications requiring highly efficient and reliable LED lighting solutions.

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