LD7575B Datasheet | Leadtrend

5/26/2008 Green-Mode PWM Controller with High-Voltage Rev. 00 Start-Up Circuit General Description The LD7575B is a current-mode PWM controller with excellent power-saving operation. It Features a highvoltage 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 leading-edge blanking of the current sensing, internal slope pensation, and the small package provide the users a high efficiency, minimum external ponent counts, and low cost solution for AC/DC power applications. Furthermore, the embedded over voltage protection, over load protection and the special...