SCT2250FPAR 4.5V-17V input, 5A, selectable frequency, selectable operating mode, synchronous buck converter

The SCT2250 is a high-power fully integrated synchronous step-down DCDC converter with an output current up to 5A. Its input voltage range is 4.5V to 17V. SCT2250 provides selectable switching frequencies of 400KHz, 800KHz and 1.2MHz to optimize conversion efficiency or reduce the size of peripheral devices according to different application requirements. SCT2250 adopts COT control mode and provides three selectable working modes, including pulse width modulation mode (PWM), light load frequency modulation mode (PSM) and ultrasonic mode (USM). Customers can select the mode according to their needs to achieve light load. Efficient or fast dynamic response. The quiescent current in sleep mode is 140μA, which can meet the user's light load and high efficiency application requirements. The minimum on-time of the SCT2250 upper MOSFET is 70ns, ensuring stable low-voltage output at different switching frequencies. In terms of protection design, SCT2250 provides current limit and overcurrent hiccup protection, overheating shutdown protection, output overvoltage protection and input undervoltage protection, providing multiple guarantees for the safety of practical applications. SCT2250 is available in a small-size QFN-12 package, providing users with a simple power supply solution for miniaturized designs.

●Digital TV

● Set-top box

● XDSL Cat

● Server

● Communication POL