Descriptions:
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 simplifi ed 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 fi lter cost
High thermal shutdown temperature (+135 °C minimum)

Much Higher Performance over Discrete Buck and Passive Solutions
Supports buck, buck-boost and fl yback topologies
System level thermal overload, output short-circuit and open control loop protection
Excellent line and load regulation even with typical confi guration
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 effi ciency than passive solutions
Higher power factor than capacitor-fed solutions
Entirely manufacturable in SMD