General Description
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.

FEATUREs
● 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 Capability

APPLICATIONs
● Switching AC/DC Adapter and Battery Charger
● Open Frame Switching Power Supply
● LCD Monitor/TV Power