描述

The DIU6921 is a high-efficiency, high-frequency synchronous step-down DC-DC regulator IC capable of delivering up to 2 A output currents. The DIU6921 operates over a wide input voltage range from 4.5 V to 30 V and integrates the main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. The DIU6921 adopts the COT architecture to achieve fast transient responses for high step-down applications and high efficiency at light loads. In addition, it operates at a pseudo-constant frequency of 700 kHz under heavy load conditions to minimize the size of the inductor and capacitor.