SY21053
Description
The SY21053 develops a high efficiency synchronous step-down DC/DC converter capable of delivering 1A current. The SY21053 operates over a wide input voltage range from 7V to 100V 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): 500mΩ/240mΩ
- 7-100V Input Voltage Range
- 1A Output Current Capability
- Constant On-time Control
- Instant PWM Architecture to Achieve Fast Transient Responses
- Programmable Switching Frequency Range: 200kHz ~600kHz
- 2ms Internal Soft-start Limits the Inrush Current
- Precise ±2% 1.225V Reference over
- 40°C to +125°C Temperature Range
- Cycle-by-cycle Peak Current Limit
