SY20311AIC - High Efficiency 1.5MHz, Dual 1A Synchronous Step Down Regulator


·         2.5V to 5.5V Input Voltage

·         1.5MHz Switching Frequency

·         180° Out of Phase Operation

·         Output Current: 1A per Channel

·         Quiescent Current: Typical 55µA for both Channels

·         Low RDS(ON) for Internal Switches (PFET/NFET): 260mΩ/180mΩ

·         Internal Soft-start

·         100% Dropout Operation

·         RoHS Compliant and Halogen Free

·         Compact Package: TSOT23-8

Typical Application


The SY20311 is a dual output, high efficiency 1.5MHz synchronous step down DC/DC regulator capable of delivering up to 1A output current for each output channel. The SY20311 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.


·         SSD

·         Cell Phones

·         Digital Cameras

·         PDAs

·         Portable Media Players