SY21019 Overview
The SY21019 high-efficiency asynchronous Buck converter can deliver 300mA output current over a wide input voltage range from 5V to 40V. The SY21019 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 minimize conduction loss.
SY21019 Key Features
- Low RDS(ON) for Internal N-Channel Power FET: 2Ω
- 5V to 40V Input Voltage Range
- Up to 300mA Output Current
- 2MHz Switching Frequency
- Constant Off-Time and Peak-Current Mode
- Internal Soft-Start Limits Inrush Current
- ±2% 0.6V Reference
- Output Short-Circuit Protection
- Cycle-by-Cycle Peak Current Limit
- Over Temperature Protection