SY21242ABC -


·       Wide Input Range:2-6V

·       1MHz Switching Frequency

·       Minimum On Time: 100ns Typical

·       Minimum Off Time: 100ns Typical

·       Max Output Voltage: 6v

·       Low RDS(ON): 120mΩ

·       Rohs Compliant and Halogen Free

·       Compact Package: SOT23-6

Typical Application


SY21242 is a high efficiency, current-mode control Boost DC to DC regulator with an integrated 120mΩ  RDS(ON) N-channel MOSFET. The fixed 1MHz switching frequency and internal compensation reduce external component count and save the PCB space. The build-in internal soft start circuitry minimizes the inrush current at start-up.


·       Solar Battery Charger

·       Backup Battery