SY20021 -

Features

·       Low RDS(ON) for Internal Switches (Top/Bottom):

o           SY20021:200mΩ/150 mΩ,1.2AContinuous,2APeak

·       2.5-5.5V Input Voltage Range

·       2.25MHz Switching Frequency

·       50uA Quiescent Current

·       Internal Softstart Limits the Inrush Current

·       1.5% 0.6V Reference

·       100% Dropout Operation

·       RoHS Compliant and Halogen Free

·       Compact Package: SOT23-5

Typical Application

Description

The SY20021 is high-efficiency 2.25MHz synchronous step-down DC-DC converters capable of delivering0.6A/1.2Aoutput current. SY20021 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.

Applications

·       WiFi Card

·       Set Top Box

·       GPS

·       Toy