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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