A driving circuit for a plurality of light emitting diode groups (LED1, LED2, LED3, LED4) connectable to a TRIAC dimmer adapted to modulate an input AC voltage depending on a selected dimming level, comprising: a rectifier adapted to full-wave rectify a modulated AC voltage output from the dimmer to generate and output a driving voltage; a driving module adapted to receive the driving voltage of the rectifier to detect the selected dimming level and drive the plurality of light emitting diode groups (LED1, LED2, LED3, LED4) depending on the detected dimming level; and a bleeder circuit adapted to provide a bleeder current (I_BLD) to the TRIAC dimmer, wherein the bleeder circuit is adapted to provide the bleeder current (I_BLD) only for a preset on-duty time (Td) characterized in that the bleeder circuit comprises a first input and a second input, the first input and the second input being connected to the recitfier so as to receive the driving voltage, wherein the first input is further coupled to the driving module and the first input is connectable to the plurality of light emitting diode groups (LED1, LED2, LED3, LED4), the bleeder circuit further comprises a first resistor, a second resistor, a third resistor, a bleeder resistor (BLDR), a first zener diode, a first capacitor, and a first FET, wherein the first resistor is connected between the first input of the bleeder circuit and a first node, the second resistor is connected between the second input of the bleeder circuit and the first node, the first capacitor is connected between the first node and a second node, the first zener diode is connected between the first input of the bleeder circuit and the second node, the third resistor is connected between the first input of the bleeder circuit and the second node, the first FET comprises a first terminal connected to the first input of the bleeder circuit, a second terminal connected to a third node, and a gate terminal of the first FET being connected to the second node, and the bleeder resistor (BLDR) is connected between the second input of the bleeder circuit and the third node, wherein the third node is connected to the driving module, and the third resistor is a discharge resistor configured to discharge a voltage accumulated in the gate terminal of the firs FET, the resistance value of the third resistor defining the on-duty time (Td). a rectifier adapted to full-wave rectify a modulated AC voltage output from the dimmer to generate and output a driving voltage; a driving module adapted to receive the driving voltage of the rectifier to detect the selected dimming level and drive the plurality of light emitting diode groups (LED1, LED2, LED3, LED4) depending on the detected dimming level; and a bleeder circuit adapted to provide a bleeder current (I_BLD) to the TRIAC dimmer, wherein the bleeder circuit is adapted to provide the bleeder current (I_BLD) only for a preset on-duty time (Td) characterized in that the bleeder circuit comprises a first input and a second input, the first input and the second input being connected to the recitfier so as to receive the driving voltage, wherein the first input is further coupled to the driving module and the first input is connectable to the plurality of light emitting diode groups (LED1, LED2, LED3, LED4), the bleeder circuit further comprises a first resistor, a second resistor, a third resistor, a bleeder resistor (BLDR), a first zener diode, a first capacitor, and a first FET, wherein the first resistor is connected between the first input of the bleeder circuit and a first node, the second resistor is connected between the second input of the bleeder circuit and the first node, the first capacitor is connected between the first node and a second node, the first zener diode is connected between the first input of the bleeder circuit and the second node, the third resistor is connected between the first input of the bleeder circuit and the second node, the first FET comprises a first terminal connected to the first input of the bleeder circuit, a second terminal connected to a third node, and a gate terminal of the first FET being connected to the second node, and the bleeder resistor (BLDR) is connected between the second input of the bleeder circuit and the third node, wherein the third node is connected to the driving module, and the third resistor is a discharge resistor configured to discharge a voltage accumulated in the gate terminal of the firs FET, the resistance value of the third resistor defining the on-duty time (Td).