SD4938 Description
SD4938 is a current mode PWM controller with 150V MOSFET used for SMPS. SD4938 integrates high-voltage start-up circuit. It enters burst mode at light load to reduce the system standby power dissipation;.
SD4938 Key Features
- Input voltage: 20V~150V
- Adjustable output voltage including: 12V, 15V and 18V
- Output current: 0.5A
- High-voltage self-startup
- Burst mode at light load
- Frequency reduction
- Soft startup
- VDD undervoltage protection
- VDD overvoltage protection
- Leading edge blanking