LNK304GN-TL

LNK304GN-TL is a LinkSwitch-TN family lowest component count, energy-efficient off-line switcher IC. It is specifically designed to replace all linear and capacitor-fed non-isolated power supplies in the under 360mA output current range at equal system cost while offering much higher performance and energy efficiency. It 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. 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 converter. The fully integrated auto-restart circuit in the safely limits output power during fault conditions such as short-circuit or open loop, reducing component count and system-level load protection cost. Application includes appliances and timers, LED drivers and industrial controls.

• Cost effective linear/cap dropper replacement
• Much higher performance over discrete buck and passive solutions
• EcoSmart™– extremely energy efficient
• Lowest cost and component count buck converter solution
• Fully integrated auto-restart for short-circuit and open loop fault protection
• Tight tolerances and negligible temperature variation
• Frequency jittering dramatically reduces EMI (~10dB) - minimizes EMI filter cost
• 80mW max power rating, 700V power switch voltage rating
• 200µA power switch current rating, 66kHz switching frequency. 120mA MDCM/170mA CCM at 230VAC ±15%
• Plastic surface mount DIP package, operating junction temperature range from -40 to 150°C