The is a power management integrated circuit (IC) primarily used as an LED TV backlight driver . It is manufactured by ON-BRIG and is commonly found in budget LED TV models (such as Arielli, Crown, and Felix) on the TP.S506.PB801 main board. Key Features & Specifications
When troubleshooting, first check for ~12V at Pin 1 (VIN) and a high signal (typically 3.3V) at Pin 2 (DIM). sn51dp datasheet pdf