General Description
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