The LNK574DG is a zero no-load consumption integrated Off-Line Switcher IC incorporates new technology which enables the device to automatically enter into and wake up from no-load mode or with 1mW load while taking less than 5mW from the AC power. This low power level is also immeasurable on most power meters. The accurately specified FEEDBACK pin voltage reference enables universal input primary-side regulated power supplies with accurate constant voltage from 5% to full load. The start-up and operating power are derived directly from the DRAIN pin which eliminates start-up circuitry. The internal oscillator frequency is jittered to significantly reduce both quasi-peak and average EMI.
Accurate hysteretic thermal shutdown protection - automatic recovery reduces field returns
Universal input range allows worldwide operation
Simple ON/OFF control, no loop compensation needed
High bandwidth provides excellent transient load response with no overshoot
ON/OFF control provides constant efficiency to very light loads
