SY21173 Description
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 minimize conduction loss.
SY21173 Key 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
- Internal Soft-Start Limits the Inrush
- ±1% 0.8V Reference
- Adjustable Switching Frequency Range
- EN ON/OFF Control with Accurate
- Hiccup Mode Output Short Circuit
- Cycle-by-Cycle Peak Current Limit