• 2.5V to 5.5V Input Voltage Range
• 55μA Low Quiescent Current
• Low R_DS(ON) for Internal Switches (Top/Bottom): 85mΩ /60mΩ
• High Switching Frequency 1MHz Minimizes the External Components
• Internal Soft-start Limits the Inrush Current
• 100% Dropout Operation
• Power Good Indicator
• Hic-cup for Short Circuit Protection
• Output Auto Discharge Function
• RoHS Compliant and Halogen Free
• Compact Package: DFN2×2-8

 The SY20117A  high-efficiency 1MHz synchronous step-down DC/DC regulator operates over a wide input voltage range of 2.5V to 5.5V, and can deliver an output current up to 3A with a low quiescent current of 55µA. It integrates a main switch and a synchronous switch with very low R_DS(ON) to minimize conduction loss. The 1MHz switching frequency allows for low output-voltage ripple, as well as small external inductor and capacitor values.

The SY20117A  is highly integrated, so only the input and output capacitors, inductor, and feedback resistors need to be selected for the targeted application specifications.

The SY20117A  is available in a compact DFN2×2-8 package.