This is a high-efficiency dual-channel LED linear current control chip with controllable silicon detection and line voltage compensation. This chip uses our patented constant current and constant power control technology to control the output current by detecting the VT port voltage, so that the input power is basically unchanged when the input voltage changes; at the same time, the output current is controlled by detecting the TRIAC port voltage. The discharge current is closed when there is no controllable silicon connected to the system, and the TRIAC port is normally opened when there is a controllable silicon connected to the system. The chip has an overtemperature regulation function. When the chip temperature is too high, the output current is reduced, which improves the system application reliability.