SY21031 - 0.8A Asynchronous Step-Down Regulator
The SY21031 high-efficiency asynchronous stepdown DC/DC regulator is using an adaptive constant off-time architecture, and can deliver 0.8A current over a wide input voltage range from 4.5V to 55V.
It integrates a main switch with low RDS(ON) to minimize conduction loss.
The 1.2MHz switching frequen
SY21031 Features
* 4.5V to 55V Input Voltage Range
* Up to 0.8A Output Current
* Low RDS(ON) for Internal N-Channel Power FET: 700mΩ
* 1.2MHz Pseudoconstant Switching Frequency
* Adaptive Constant Off-Time Control
* Internal Soft-Start Limits Inrush Current
* ±1% 0.6V Reference
* Hicc
