SCY1751FCCT1G

Application Field and Working Principle of SCY1751FCCT1G

SCY1751FCCT1G is a highly integrated ASIC Switching Regulator, belonging to the PMIC - Voltage Regulators - DC DC Switching Regulators category. Its output voltage is adjustable and can be set between 1.3V and 5.5V, making it suitable for applications like display screens, mobiles, tablets and so on. Being a switching regulator, it can be used to both boost current as well as reduce the current in a given circuit, with low electromagnetic interference.

Setup and Operation of SCY1751FCCT1G

SCY1751FCCT1G has the ability to be programmed with a Pulse Width Modulator (PWM) or a Comparator. The user can choose either the PWM or the Comparator based on the application. In the PWM mode, the input voltage and the output voltage are programmed with an external resistor divider. The Comparator mode employs an external voltage reference (VREF) and an external voltage sense (VIN) to regulate the output voltage. When operating in the PWM mode, SCY1751FCCT1G rapidly alternates the output voltage between the needed voltage and a predetermined voltage. The duty cycle of the alternating voltage is predefined in such a manner that the amount of current is adjusted. In the Comparator mode, SCY1751FCCT1G relies on an external voltage reference (VREF) and an external voltage sense (VIN). It then compares VREF with VIN for any variation in the output voltage and rapidly adjusts it. This mode is preferred when precision output voltage adjustment is required.

Benefits of SCY1751FCCT1G

SCY1751FCCT1G offers many advantages over other switching regulator solutions. It is highly integrated, with an advanced circuit structure, allowing it to achieve efficiency as high as 95%, and with reduced switching noise. It has a wide input voltage range of 3.5V - 13.750V and its output voltage can be set up to 5.5V (1.3V - 5.5V). It also supports a wide range of applications with its PWM and Comparator modes, making it suitable for both dual-supply and single-supply circuits. Additionally, its advanced On/Off control is designed to reduce start-up time and improve system performance. This feature allows the IC to detect start-up voltage, and adjust its output voltage accordingly, which in turn helps reduce start-up time and noise, while also eliminating acoustic noise from the power control loop. Finally, all these features are built into a single, small package (3.3mm x3.3mm QFN RM-8) which makes it ideal for space-constrained applications.

Conclusion

SCY1751FCCT1G is a highly integrated and advanced switching regulator solution which offers high efficiency, low switching noise, wide input voltage range, and adjustable output voltage. Its advanced On/Off control helps reduce start-up time and acoustic noise from the power control loop. Together, these features make it the ideal solution for power management in space-constrained applications.