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