Current control circuit and method for controlling the same, backlight assembly and display device

A current control circuit comprising:

• a current regulator, a current detector, a voltage detector, a switching circuit, a controlled circuit, and a reference voltage setting device;
• the current detector for detecting a current of the controlled circuit is electrically connected with the switching circuit, the controlled circuit and a ground,
• the voltage detector is configured to detect a voltage across at least a portion of the controlled circuit, and a first output terminal of the voltage detector is electrically connected with the reference voltage setting device;
• a first input terminal of the current regulator is electrically connected with the reference voltage setting device;
• the switching circuit is configured to switch between a first connection state and a second connection state, wherein
• in the first connection state, the switching circuit electrically connects a second input terminal of the current regulator with the current detector, and the current detector converts a current detected by itself into a voltage signal and outputs the same to the second input terminal of the current regulator, and the current regulator adjusts a current flowing in the controlled circuit according to the voltage signal output by the current detector and a first reference voltage output by the reference voltage setting device to reach a first current;
• in the second connection state, the switching circuit electrically connects the second input terminal of the current regulator with a second output terminal of the voltage detector and simultaneously short-circuits the current detector, and the current regulator adjusts the current flowing in the controlled circuit according to a second reference voltage output by the reference voltage setting device and the voltage output by the voltage detector to reach the first current, and wherein
• the second reference voltage is a voltage detected by the voltage detector in the first connection state.