Led drive circuit

Discloses a kind of LED driver circuit, the LED driving circuit according to the present disclosure by providing a plurality of sets of LED load that can be switched between the parallel state and a series state, when the input voltage is low so that the LED is in parallel with the load state, by setting the corresponding transistor operating in the linear state is adjusted parallel branch circuit current flows through the corresponding LED load, in the input voltage or the load increases such that the LED drive module is connected in series state, and by setting the series path regulator transistor flows through all the LED load current. Thus, working time can be made to all aspects of the same LED load, on the other hand be such that all the LED load most of the time work in the entire operating cycle. While improving the overall life of the circuit to improve the utilization of the LED load.