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LD7575A
11/29/2007
Green-Mode PWM Controller with High-Voltage Start-Up Circuit
Rev.00a
General Description
The LD7 575A is a c urrent-mode PWM con troller with tures a highexcellent pow er-saving o peration. It fea voltage current source to directly supply the startup current from bulk capacitor and further to provide a lossless startup circuit. The integrated functions such as the le ading-edge blanking of the current sensing, internal slope compensation, and the small package provide the users a high effic iency, minimum external component counts, and low cost solution for AC/DC power applications.