SY21143
Description
The SY21143 is a high efficiency 500 kHz synchronous step down DC/DC converter capable of delivering 3A current. The SY21143 operates over a wide input voltage range from 4.5V to 23V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.
Key Features
- Low RDS(ON) for Internal Switches (Top/Bottom): 105mΩ/50mΩ
- 4.5-23V Input Voltage Range
- 3A Output Current Capability
- 500 kHz Switching Frequency
- Instant PWM Architecture To Achieve Fast Transient Responses
- Cycle-by-cycle Peak Current Limitation
- Internal Softstart Limits The Inrush Current
- Hic-Cup Mode Output Short Circuit Protection
- ±1.5% 0.6V Reference
- Power Good Indicator (SY21143AIC Only)
