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