Introduction - If you have any usage issues, please Google them yourself
Green-Mode PWM Controller with High-Voltage
Start-Up Circuit
The LD7575 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 compensation,
and the small package provide the users a high efficiency,
minimum external component counts, and low cost solution
for AC/DC power applications.