SY21052FCC -


·       Low RDS(ON) for Internal Switches (Top/Bottom): 500mΩ/240mΩ

·       7-85V Input Voltage Range

·       1.2A Continuous, 1.8A Peak Output Current Capability

·       Adjustable Switching Frequency

·       Instant PWM Architecture to Achieve Fast Transient Responses

·       Programmable Switching Frequency Range 200~500 kHz.

·       2ms Internal Soft-start Limits the Inrush Current

·       Precious +/-2% 1.2V Reference

·       RoHS Compliant and Halogen Free

·       Compact  package : SO8E

Typical Application


SY21052 develops high efficiency synchronous step-down DC-DC converter capable of delivering 1.2A continuous, 1.8A peak current. The SY21052 operates over a wide input voltage range from 7V to 85V and integrate main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.

The device adopts the instant PWM architecture to achieve fast transient responses for high step down applications. 


• Non-Isolated Telecommunication Buck Regulator
• Secondary High Voltage Post Regulator
• Automotive Systems