SY20194AQDC -


·       Input Voltage Range: 2.5V to 5.5V

·       1.25MHz Switching Frequency

·       Max Output Current: 3.0A

·       Peak Current Mode Control for the Fast Transient Speed

·       100% Drop Out Function

·       Typical 18µA Quiescent Current.

·       Low RDS(ON) for Internal Switches (PFET/NFET): 75mΩ/55mΩ

·       Hic-cup Mode Protection for Hard Short Condition

·       Internal Integration with 10pF Feed-forward Capacitor

·       RoHS Compliant and Halogen Free

·       Compact Package: QFN3x3-16

Typical Application


SY20194A is a high efficiency, 1.25MHz synchronous step-down DC/DC regulator with ultra low quiescent current, capable of delivering up to 3A output current.

SY20194A operates over a wide input voltage range from 2.5V to 5.5V and integrates main switch and synchronous switch with very low RDS (ON) to minimize the conduction loss.


·       Set Top Box

·       Net PC

·       Mini-Notebook PC

·       Access Point Router