LNK302P集成电路（IC）的ACDC转换器离线开关规格书PDF中文资料

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