SY21041CABC -


·       Low RDS(ON) for Internal Switches (Top/Bottom): 350/150 mΩ

·       4.5-27V Input Voltage Range

·       Instant PWM Architecture to Achieve Fast Transient Responses

·       Internal Soft-start Limits the Inrush Current

·       2% 0.6V Reference

·       RoHS Compliant and Halogen Free

·       Compact Package: SOT23-6

Typical Application


SY21041C develops high efficiency synchronous step-down DC/DC converter capable of delivering 1A load current. SY21041C operates over a wide input voltage range from 4.5V to 27V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.

SY21041C always operates under continuous condition mode; low output ripple and small inductor and capacitor size are achieved with 1.15MHz switching frequency.


·       Set Top Box

·       Portable TV

·       Access Point Router

·       DSL Modem

·       LCD TV