LNK302DG-TL

LNK302DG-TL is a lowest component count, energy-efficient off-line switcher IC. This LinkSwitch™-TN is LinkSwitch™-TNspecifically designed to replace all linear and capacitor-fed (cap dropper) non-isolated power supplies in the under 80mA output current range at equal system cost while offering much higher performance and energy efficiency. LinkSwitch-TN device integrates a 700V 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. Typical applications include appliances and timers, LED drivers and industrial controls.

• 80/63mA current output (max, CCM/MDCM, 230V)
• Tight tolerances and negligible temperature variation
• System level thermal overload, output short-circuit and open loop protection
• Supports buck, buck-boost and flyback topologies
• Excellent line and load regulation even with typical configuration
• High bandwidth provides fast turn-on with no overshoot
• Current limit operation reject line ripple, built-in current limit and hysteretic thermal protection
• Universal input voltage range (85VAC to 265VAC), enables a 100% SMD designed power supply
• SO-8C package, operating temperature range from -40 to 150°C
• Higher efficiency than passive solutions, higher power factor than capacitor-fed solutions

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