TNY254英文资料

　　Lowest Cost， Low Power Switcher Solution • Lower cost than RCC， discrete PWM and other integrated/hybrid solutions • Cost effective replacement for bulky linear adapters • Lowest component count • Simple ON/OFF control – no loop compensation devices • No bias winding – simpler， lower cost transformer • Allows simple RC type EMI filter for up to 2 W from universal input or 4 W from 115 VAC input Extremely Energy Efficient • Consumes only 30/60 mW at 115/230 VAC with no load • Meets Blue Angel， Energy Star， Energy 2000 and 200mW European cell phone requirements for standby • Saves $1 to $4 per year in energy costs （at $0.12/kWHr） compared to bulky linear adapters • Ideal for cellular phone chargers， standby power supplies for PC， TV and VCR， utility meters， and cordless phones. High Performance at Low Cost • High voltage powered – ideal for charger applications • Very high loop bandwidth provides excellent transient response and fast turn on with practically no overshoot • Current limit operation rejects line frequency ripple • Glitch free output when input is removed • Built-in current limit and thermal protection • 44 kHz operation （TNY253/4） with snubber clamp reduces EMI and video noise in TVs & VCRs • Operates with optocoupler or bias winding feedback