LNK302 Datasheet PDF – Off-Line Switcher IC

Part Number: LNK302

Function: Lowest Component Count, Energy-Efficient Off-Line Switcher IC

Pakcage : DIP-8B, SMD-8B, SO-8C

Manufacturer: Power Integrations, Inc

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LNK302 datasheet



LNK302 is specifically designed to replace all linear and capacitor-fed (cap dropper) non-isolated power supplies in the under 360 mA output current range at equal system cost while
offering much higher performance and energy efficiency.

LinkSwitch-TN devices integrate a 700 V power MOSFET, oscillator, simple On/Off control scheme, a high-voltage switched current source, frequency jittering, cycle-by-cycle current limit and thermal shutdown circuitry onto a monolithic IC. The start-up and operating power are derived directly from the voltage on the DRAIN pin, eliminating the need for a bias supply and associated circuitry in buck or flyback converters.

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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) [ … ]

LNK302 Datasheet PDF Download

LNK302 pdf

Other data sheets are available within the file: LNK302P, LNK302G, LNK302D, LNK304, LNK305, LNK306