LD7660J PDF Datasheet – Low Power Off-line Switcher

Part Number: LD7660J, LD7660JGN

Function: Low Power Off-line Switcher

Package: DIP 8 Pin Type

Manufacturer: Leadtrend


1 page
LD7660J image


The LD7660J integrated a 600V power MOSFET and a current mode PWM controller in a DIP-8 package. It’s operating at fixed frequency of 65 kHz. It provides important functions needed for a low output power applications such as leading-edge blanking of the current sensing, internal slope compensation, and green-mode power-saving operation under light load or no load condition. This highly integrated device provides the users a high efficiency, low external component counts, and low cost solution for low power adaptor or charger applications. The special green-mode control is not only to achieve the low power consumption but also to offer a non-audible-noise operation when the LD7660J is operating under light load or no load condition.


1. Built-in 600V/1A Power MOSFET

2. Secondary-side/Primary-side feedback control

3. Switching Frequency at 65KHz

4. Fixed Internal Frequency Trembling

5. Built-in Load Regulation Compensation

6. Built-in Slope Compensation with 75% max duty-cycle

7. Low Startup Current (<20μA)

8. Current Mode Control with Cycle-by-Cycle Current Limit

9. Non-audible-noise Green Mode Control


2 page


1. Switching AC/DC Adaptor

2. LCD TV or PC Standby Power


LD7660J Datasheet