SY20113C1DFC - High Efficiency 5.5V, 3MHz, 3A Buck


  • Low RDS(ON) for Internal Switches(Top/Bottom):110mΩ/80mΩ
  • 3A Continuous Load Current Capability
  • 2.7-5.5V Input Voltage Range, Target at 4.2V Output Application
  • High Switching Frequency Minimizes the External Components: 3MHz
  • Internal soft-start Limits the Inrush Current
  • Hic-cup Mode Protection
  • 100% Dropout Operation
  • RoHS Compliant and Halogen Free
  • Compact Package: DFN2×2-8

Typical Application


The SY20113C1 is high-efficiency, high frequency synchronous step-down DC/DC regulator capable of delivering up to 3A output current. The SY20113C1 operates over a wide input voltage range from 2.7V to 5.5V and integrate main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.

Low output voltage ripple and small external inductor and capacitor sizes are achieved with greater than 3MHz switching frequency.

SY20113C1 integrates reliable short circuit and over-voltage protection.


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