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Application Notes: AN_SYH407 High Efficiency 1.5MHz, 1A Synchronous Step Down Regulator General Description Features SYH407 is a high efficiency 1.5MHz synchronous step • Low RDS(ON) for internal switches (top/bottom) down DC/DC regulator IC capable of delivering up to 260mΩ/170mΩ 1A output current. It can operate over a wide input • 2.5~6.5V input voltage range voltage range from 2.5V to 6.5V and integrate main • 40µA typical quiescent current switch and synchronous switch with very low RDS (ON) to minimize the conduction lo . • High light load efficiency • High switching frequency 1.5MHz minimizes the Ordering Information external components • Internal soft-start limits the inrush current SYH407 □□□( □□□□□□) □□□ Temperature Code • 100% dropout operation Package Code • RoHS Compliant and