SY8401 Overview
The SY8401 develops a high efficiency asynchronous step down DC/DC regulator capable of delivering 0.8A output current. The IC adopts current mode adaptive constant off time control. The SY8401 operates over a wide input voltage range from 4.5V to 55V and integrates main switch with very low RDS(ON) to minimize the conduction loss.
SY8401 Key Features
- Low RDS(ON) for Internal N-channel Power FET: 700mΩ
- 4.5-55V Input Voltage Range
- 0.8A Output Current Capability
- 1.2MHz Pseudo Constant Switching Frequency
- Internal Soft-start Limits the Inrush Current
- Hic-cup Mode Output Short Circuit Protection
- EN ON/OFF Control with Accurate Threshold
- Cycle by Cycle Peak Current Limit
- 0.6V±1 % Reference Voltage
- SOT23-6 Package