Overview
   SM7513 is a high-performance primary feedback control power switch chip used in offline low-power AC/DC switching power supplies. It achieves high-precision constant current output within the full voltage input range with an accuracy of less than ±3%. It does not require loop compensation and can save components such as optocouplers, TL431 and transformer auxiliary windings in the system, reducing costs.

FEATUREs
✦ Topology support: flyback and low-cost BUCK-BOOST
✦ 730V single-chip integrated process
✦ Wide voltage 85Vac~265Vac constant current accuracy is less than ±3% in the input voltage range
✦ Compatible with 1-3W in the full voltage range
✦ Mingweis patented primary feedback control technology without auxiliary winding can save the system components such as optocouplers and 431
✦ No loop compensation required
✦ Built-in leading edge blanking circuit (LEB)
✦ Cycle-by-cycle peak current comparison
✦ Output open/short circuit protection
✦ Built-in startup soft start
✦ No FB feedback loop required
✦ Package form: SOP8

APPLICATION areas
✦ LED lighting driver