SY20051A -


·       Low RDS(ON) for Internal Switches (Top/Bottom)230mΩ/150mΩ

·       2.5~5.5V Input Voltage Range

·       High Switching Frequency 1.5MHz Minimizes the External Components 

·       Internal Soft-start Limits the Inrush Current

·       100% Dropout Operation

·       RoHS Compliant and Halogen Free

·       Output Auto Discharge Function

·       Compact Package: DFN1.5x1.5-6

Typical Application


SY20051A is a high efficiency 1.5MHz synchronous step down DC/DC regulator IC capable of delivering up to1Aoutput currents. It can operate over a wide input voltage range from 2.5V to 5.5V and integrate main switch and synchronous switch with very low RDS (ON) to minimize the conduction loss.


·       Portable Navigation Device

·       Set Top Box

·       USB Dongle

·       Media Player

·      Smart Phone