Cost Effective Linear/Cap Dropper Replacement
• Lowest cost and component count buck converter solution
• Fully integrated auto-restart for short-circuit and open loop
fault protection – saves external component costs
• LNK302 uses a simplified controller without auto-restart for
very low system cost
• 66 kHz operation with accurate current limit – allows low cost
off-the-shelf 1 mH inductor for up to 120 mA output current
• Tight tolerances and negligible temperature variation
• High breakdown voltage of 700 V provides excellent input
surge withstand
• Frequency jittering dramatically reduces EMI (~10 dB)
• Minimizes EMI filter cost
• High thermal shutdown temperature (+135 °C minimum)
Much Higher Performance Over Discrete Buck and
Passive Solutions
• Supports buck, buck-boost and flyback topologies
• System level thermal overload, output short-circuit and open
control loop protection
• Excellent line and load regulation even with typical configuration
• High bandwidth provides fast turn-on with no overshoot
• Current limit operation rejects line ripple
• Universal input voltage range (85 VAC to 265 VAC)
• Built-in current limit and hysteretic thermal protection
• Higher efficiency than passive solutions
• Higher power factor than capacitor-fed solutions
• Entirely manufacturable in SMD
EcoSmart™– Extremely Energy Efficient
• Consumes typically only 50/80 mW in self-powered buck
topology at 115/230 VAC input with no-load (opto feedback)
• Consumes typically only 7/12 mW in flyback topology with
external bias at 115/230 VAC input with no-load
• Meets California Energy Commission (CEC), Energy Star, and
EU requirements
Applications
• Appliances and timers
• LED drivers and industrial controls