矽力杰产品规格书SY8003E.pdf

Application Note: SY8003E High Efficiency 5.5V, 3A continuous, 1MHz Synchronous Step Down Regulator General Description Features The SY8003E is high-efficiency, high frequency • Low RDS(ON) for internal switches synchronous step-down DC-DC regulator IC capable of (top/bottom):110mΩ/80mΩ delivering up to 3A output current. The SY8003E • 3A continuous load current capability operates over a wide input voltage range from 2.7V to • 2.7-5.5V input voltage range 5.5V and integrate main switch and synchronous • 1MHz high switching frequency minimizes the switch with very low RDS(ON) to minimize the external components conduction loss. • Internal soft-start limits the inrush current • Hic-cup mode protection Low output voltage ripple and small external inductor • Reliable over-voltage protection: No latch off and capacitor sizes are achieved with 1MHz switching protection frequency. • 100% dropout operation • Forced PWM mode operation only SY8003E integrates reliable short circuit and over-