LD7552 PDF File ( Datasheet )

LD7552 2, 21, 2005 Green-Mode PWM Controller General Description The LD7552 is a low cost, low startup current, current mode PWM controller with green-mode power-saving operation. The integrated functions such as the leading-edge blanking of the current sensing, internal slope compensation and the small package provide the users a high efficiency, minimum external component counts, and low cost solution for AC, DC power applications. The special green-mode control does not only achieve low po

LD7552B 1, 2, 2008 Green-Mode PWM Controller with Integrated Protections Rev. 01a General Description The LD7552B are low cost, low startup current, current mode PWM controllers with green-mode power- saving operation. The integrated functions include the Features - - - - - - - - - - z High-Voltage CMOS Process with Excellent ESD protection Very Low Startup Current (<20μA) Current Mode Control Non-audible-noise Green Mode Control UVLO (Under Voltage Lockout) LEB (Leading-Edge Blanking) on