SD4844P
Silan Microelectronics
SD4844P Current Mode PWM Controller by Silan Microelectronics (DIP 8 Pin Type): datasheet PDF, pinout and specifications.
Integrated Circuit - IC's DIP 8 Pin Type
Hangzhou Silan Microelectronics is a Chinese integrated device maker. It produces power MOSFETs and IGBTs, LED driver ICs, AC-DC switching controllers such as the SD48xx series, and microcontrollers.

SD4844P Current Mode PWM Controller by Silan Microelectronics (DIP 8 Pin Type): datasheet PDF, pinout and specifications.
SD4844 Current Mode PWM Controller by Silan Microelectronics (DIP 8 Pin Type): datasheet PDF, pinout and specifications.
SD4842 (SD4840 – SD4844) Current Mode PWM Controller by Silan Microelectronics (DIP 8 Pin Type): datasheet PDF, pinout and specifications.
SD6832 Current Mode PWM+PFM Controller With Built-in High-voltage MOSFET by Silan Microelectronics (DIP 8 Pin Type): datasheet PDF, pinout and specifications.