UC3843 PWM Controller IC Pinout, Features, Equivalent & Datasheet
switch mode power supply - Help finding PWM IC with marking on device '0L346' not sure whether it starts with 0 or O. package of device is sot23-6 - Electrical Engineering Stack Exchange
PWM制御ICで高電圧からLEDを駆動する:Design Ideas ディスプレイとドライバ(1/2 ページ) - EDN Japan