LD7575 PDF File ( Datasheet )

LD7575 6, 5, 2007 Green-Mode PWM Controller with High-Voltage Start-Up Circuit REV: 04a General Description The LD7575 is a current-mode PWM controller with Features - - - - - - - - - z High-Voltage (500V) Startup Circuit Current Mode Control Non-Audible-Noise Green Mode Control UVLO (Under Voltage Lockout) LEB (Leading-Edge Blanking) on CS Pin Programmable Switching Frequency Internal Slope Compensation OVP (Over Voltage Protection) on Vcc OLP (Over Load Protection) 500mA Driving Capabilit

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