LNK304PN

LNK304PN -  LinkSwitch-TN Family Lowest Component Count, Energy-Effi cient Off-Line Switcher IC

Product Highlights

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

EcoSmart®

– Extremely Energy Effi cient

• 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 fl yback 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

Product Highlights

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

EcoSmart®

– Extremely Energy Effi cient

• 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 fl yback 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

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Shipping:

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your wishes, just feel free to inform us when ordering.

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REFUNDS & RETURN:

We offer a warranty on all items that we sold. Item will be tested before ship,it will be in good condition,if there are some problems with the item,feel free to contact us.Please Email us to notify a defective item. Unless otherwise specified, this item comes with 30 days warranty from the shipment date.

You must contact us before returning any product. All returns must be made within 30 days from this shipment date.Return must be in new condition(the SAME CONDITION as it was sent to you)

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