LED (light emitting diode) lighting driving circuit and electronic equipment

The invention provides an LED (light emitting diode) lighting driving circuit and electronic equipment, belonging to the field of analog circuits. The LED lighting driving circuit is characterized in that two output pins of an optical coupler are respectively connected with a feedback pin fb of a PWM (pulse-width modulation) controller and the ground, a first resistor is connected in parallel between two input pins of the optical coupler, one input pin of the optical coupler is connected with the ground, a second resistor is connected in series between the other input pin of the optical coupler and a first connecting point, a third resistor is connected in series between the ground and the first connecting point, and the first connecting point is a connecting point of the LED lighting driving circuit and a load. The optical coupler is directly utilized for realizing the constant-current LED lighting driving, without additional various constant-current circuits, electrical isolation guarantee safety is realized for input and output, and the circuit is simple in structure and low in cost.