Highest Performance and Design Flexibility
• Lossless zero cross signal generation
• Supports buck, buck-boost and flyback topologies
• Enables ±3% regulation across line and load
• Selectable device current limit
• 66 kHz operation with accurate current limit
• Allows the use of low-cost off-the-shelf inductors
• Reduces size and cost of magnetics and output capacitor
• Frequency jittering reduces EMI filter complexity
• X capacitor discharge function (LNK331x only)
Enhanced Safety and Reliability Features
• Soft-start limits system component stress at start-up
• Auto-restart for short-circuit and open loop faults
• Output overvoltage protection (OVP)
• Line input overvoltage protection (OVL)
• Hysteretic over-temperature protection (OTP)
• Extended creepage between DRAIN pin and all other pins improves
field reliability
• 725 V MOSFET rating for excellent surge withstand
• Nemko (EN62368-1) and CB (IEC62368-1) certifications
EcoSmart™– Extremely Energy Efficient
• IC standby supply current <100 mA
• On/Off control provides constant efficiency over a wide load range
• Easily meets all global energy efficiency regulations
• No-load consumption <30 mW with external bias
Applications
• Home and building automation
• Dimmers, switches and sensors with and w/o Neutral wire
• Appliances
• IoT and industrial controls