The LD7904JGP7 is a green mode PWM chip integrated with a 700V MOSFET in a DIP-6 package. It’s operating at fixed frequency of 100KHz. With multi-functions built-in this IC , such as high voltage startup, OLP/OVP/OTP protection, internal current mode slope compensation, and green-mode power-saving operation under light load or no load condition, this highly integrated device provides high efficiency, low external component counts, and low cost solution for compact power applications.

Features 

Built-in 700V Power MOSFET 

Built-in High Voltage startup circuit 

Fixed Switching Frequency at 100KHz 

Frequency Trembling for EMI improve 

Internal High Voltage Startup Circuit 

Under Voltage Lockout (UVLO) on VCC Pin 

Current Mode Control with Slope Compensation 

Green-Mode Control for Power Saving 

OVP / OLP / Internal Thermal Shut Down Applications 

Switching AC/DC Adaptor 

LCD TV or PC Standby Power 

SMPS for LCD Monitor