Control ICs provides all the necessary features to implement off-line fixed-frequency, current-mode switching power supplies with a minimum of external components. The current mode architecture demonstrates improved load regulation, pulse-by- pulse current limiting and inherent protection of the power supply output switch

• Optimized For Off-Line Control
• Low Start-Up Current (<1mA)
• Automatic Feed Forward Compensation
• Trimmed Oscillator Discharge Current
• Pulse-By-Pulse Current Limiting
• Enhanced Load Response Characteristics -
• Double-Pulse Suppression
• High-Current Totem-Pole Output (1A Peak)
• Internally Trimmed Band-gap Reference
• 500kHz Operation Under-voltage Lockout: SG1843 - 8.4 volts
• Low Shoot-Through Current <75mA Over Temperature