SG1845
Overview
The SG1844/45 family of control ICs provides all the required features to implement off-line Fixed Frequency, Current-mode switching power supplies with a minimum number of external components. Current-mode architecture demonstrates improved line regulation, 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
- Undervoltage Lockout with 6V Hysteresis (SG1844 only)
- Double Pulse Suppression
- High-Current Totem-Pole Output
