SY20214 -
Features
· Input Voltage Range: 2.5V to 5.5V
· 1.25MHz Switching Frequency
· Max Output Current: 4.0A
· 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
· RoHS Compliant and Halogen Free
· Compact Package: QFN3x3-16
Typical Application

Description
SY20214 is a high efficiency ultra low quiescent current, 1.25MHz synchronous step-down DC/DC regulator capable of delivering up to 4A output current.
SY20214 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
· Set Top Box
· Net PC
· Mini-Notebook PC
· Access Point Router