LNK362PN

LinkSwitch™-XT energy efficient, low power off-line switcher IC incorporates a 700V power MOSFET, oscillator, simple ON/OFF control scheme, 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 DRAIN pin, eliminating the need for a bias winding and associated circuitry. Proprietary IC trimming and transformer construction techniques enable Clampless™ designs with LNK362 for lower system cost, component count and higher efficiency. Self-biased supply saves transformer auxiliary winding and associated bias supply components. It meets HV creepage requirements between DRAIN and all other pins both on the PCB and at the package. Applications include chargers/adapters for cell/cordless phones, PDAs, digital cameras, MP3/portable audio players, shavers, supplies for appliances, industrial systems and metering.

• 2.8W (adapter), 2.8W (open frame at 230VAC/2.6W (adapter), 2.6W (open frame) at 85-265VAC O/P power
• Optimized for lowest system cost, superior to linear/RCC, EcoSmartâ„¢ extremely energy efficient
• Fully integrated auto-restart for short-circuit and open loop protection
• Accurate hysteretic thermal shutdown protection, automatic recovery improves field reliability
• Universal input range allows worldwide operation, frequency jittering greatly reduces EMI
• High bandwidth provides fast turn-on with no overshoot and excellent transient load response
• Easily meets all global energy efficiency regulations with no added components
• No-load consumption of 300mW without bias winding at 265VAC input (50mW with bias winding)
• Eliminates bias winding, sampler, lower cost transformer
• Simple ON/OFF control, no loop compensation needed, lowest component count switcher solution