LD7575PS Green-Mode PWM Controller with High-Voltage  

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 startupcircuit. 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 solutionfor AC/DC power applications.

Furthermore,the embedded over voltage protection,over load protection and the special green-mode control provide the solution for users to design a high performance power circuit easily.The LD7575 is offered in both SOP-8 and DIP-8 package.

FeaturesHigh-Voltage (500V) Startup CircuitCurrent Mode ControlNon-Audible-Noise Green Mode ControlUVLO (Under Voltage Lockout)LEB (Leading-Edge Blanking) on CS PinProgrammable Switching FrequencyInternal Slope CompensationOVP (Over Voltage Protection) on VccOLP (Over Load Protection)500mA Driving Capability

ApplicationsSwitching AC/DC Adapter and Battery ChargerOpen Frame Switching Power SupplyLCD Monitor/TV Power

LD7575PS Green-Mode PWM Controller with High-Voltage