This part is a kind of semiconductor called LD7750RGR.

Function of this product has High Voltage Green-Mode PWM Controller.

Manufacturers : Leadtrend

Image and pinout :

LD7750RGR image and datasheet pinout



Some of the text within the PDF file :

LD7750R 05/12/2010 High Voltage Green-Mode PWM Controller with Over Temperature Protection Rev. 00 General Description 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 Ci [ ... ]


LD7750RGR PDF Datasheet Download

2017/10/11 19:37 2017/10/11 19:37