LNK353P

LNK353/354 ® LinkSwitch-HF Family Enhanced, Energy Efficient, Low Power Off-Line Switcher IC Product Highlights Features Optimized for Lowest System Cost • Fully integrated auto-restart for short-circuit and open loop protection • Self-biased supply – saves transformer auxiliary winding and associated bias supply components • Tight tolerances and negligible temperature variation on key parameters eases design and lowers cost • High maximum switching frequency allows very low flux density transformer designs, practically eliminating audible noise • Frequency jittering greatly reduces EMI • Packages with large creepage to high voltage pin • Lowest component count switcher solution Much Better Performance over Linear/RCC • Lower system cost than RCC, discrete PWM and other integrated solutions • Universal input range allows worldwide operation • Simple ON/OFF control – no loop compensation needed • No bias winding – simpler, lower cost transformer • High frequency switching – smaller and lower cost transformer • Very low component count – higher reliability and single side printed circuit board • High bandwidth provides fast turn on with no overshoot and excellent transient load response • Current limit operation rejects line frequency ripple • Built-in current limit and hysteretic thermal shutdown protection ® EcoSmart – Extremely Energy Efficient • No-load consumption