SY21173 Datasheet (Silergy) - Asynchronous Buck Converter

SY21173, Asynchronous Buck Converter

The SY21173 high-efficiency asynchronous Buck converter can deliver 3A output current over a wide input voltage range from 4.5V to 60V.

The SY21173 employs a constant off-time and peakcurrent mode control strategy to achieve fast transient responses.

It integrates a main switch with low RDS(ON) to m

SY21173 Features

* Low RDS(ON) for Internal N-Channel Power FET: 150mΩ

* 4.5V to 60V Input Voltage Range

* Up to 3A Output Current Capability

* Constant Off-Time and Peak-Current Mode Control

* Internal Soft-Start Limits the Inrush Current

* ±1% 0.8V Reference

* Adjustable Switching Frequ