LD7750RGR PDF datasheet can download.
This product has High Voltage Green-Mode PWM Controller functions.
This is one of the semiconductor types. This part name is LD7750RGR.
Manufacturers of the product is Leadtrend.
Image and pinout :
Some of the text files within the PDF file
LD7750R 05/12/2010 High Voltage Green-Mode PWM Controller with Over Temperature Protection Rev. 00 General
The LD7750R integrates several functions of protections, and EMI-improved solution in a SOP-7, SOP-8 or DIP-8 package to minimize the component counts and the circuit space. The device provides functions of low startup current, green-mode power-saving operation, leading-edge blanking of the current sensing and internal slope compensation. Also, the LD7750R features more protections like OLP (Over Load Protection), OVP (Over Voltage Protection), and OTP (Over Temperature Protection) to prevent the circuit being damaged under the abnormal conditions. The LD7750R features built-in auto-recovery function for OVP on Vcc pin and OLP. Features z High-Voltage (500V) Startup Circuit z Current Mode Control z Green Mode Control z UVLO (Under Voltage Lockout) z LEB (Leading-Edge Blanking) on CS Pin z Internal Frequency Swapping z Internal Slope Compensation z Internal Over Cur [ … ]
Please refer to the file for details.