Drive circuit of light-emitting diode and illumination device

The invention discloses a drive circuit of a light-emitting diode and an illumination device. The drive circuit comprises a rectifying unit, a voltage division circuit, a control unit, a voltage converter, a resistor and a capacitor, wherein the rectifying unit rectifies an AC power supply to output a first working voltage; the voltage division circuit receives the first working voltage to generate a voltage division signal; the control unit comprises a voltage-stabilizing unit and a pulse width modulation (PWM) unit, wherein the output end of the voltage-stabilizing unit is coupled with the PWM unit, and the PWM unit outputs a PWM signal; the voltage converter regulates driving voltages and driving currents of the light-emitting diode according to the PWM signal; the resistor is coupled between the output end p of the rectifying unit and the diode; the capacitor is coupled between the power input end of the voltage-stabilizing unit and the grounding end; and the PWM unit regulates the PWM signal according to