High Power Mosfet Transistors LNK306GN-TL Off Line Switcher IC

LNK306GN-TL 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

Notes:

1. Typical output current in a non-isolated buck converter. Output power capability depends on respective output voltage. See Key Applications Considerations Section for complete description of assumptions, including fully discontinuous conduction mode (DCM) operation.

2. Mostly discontinuous conduction mode.

3. Continuous conduction mode.

4. Packages: P: DIP-8B, G: SMD-8B, D: SO-8C.

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

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