ÃèÊö

The DIO6155A is a high-efficiency, high-frequency synchronous step-down DC-DC regulator IC capable of delivering more than 2 A output currents. The DIO6155A features a selection function that switches the device between the force pulse width modulation (FPWM) and auto mode. When the SEL pin is driven HIGH, the DIO6155A enters (FPWM) mode. The device enters the auto mode if the SEL pin is LOW. If the DIO6155A is selected to work under FPWM mode, the device works with ultra-low output ripple. Under auto mode, the DIO6155A works in PWM (Pulse Width Modulation) mode under medium to heavy load. In such conditions, the DIO6155A functions with a 2 MHz switching frequency to minimize the size of the inductor and output capacitor. If the load drops to meet the light load condition, the DIO6155A automatically enters PSM (Power Save Mode) for high efficiency. The DIO6155A has a fast transient response feature. The device operates over a wide input range from 2.1 V to 5.5 V with very low RDS(ON) to minimize the conduction loss. The DIO6155A is capable of delivering output down to 0.6 V with a feedback voltage of ±6 mV accuracy over -20°C to 85°C junction temperature.