The Fairchild/ON Semiconductor 204344-FSL138MRTWDTU is an isolated flyback topology integrated circuit with limited supply and demand, and high popularity. Quantity per package: 400.

• Power: 50W
• Output Isolation: Yes
• Internal Switch(s): Yes
• Voltage Breakdown: 800V
• Start-up Voltage: 12V
• Duty Cycle: 67%
• Switching Frequency: 67kHz
• Fault Protection: Current Limiting, Over Load, Over Temperature, Over Voltage
• Case/Package: TO-220F-6L (W-Forming)
• Supply Voltage: 7.5 V to 26 V
• Operating Temperature: -40°C to 125°C (TJ)