An LED lamp comprising an input part (20a, 20b, 20c, 20d); a rectifier part; and an LED unit; characterized in that: the input part (20a, 20b, 20c, 20d) configured to receive a first input from an inverter-type ballast when the inverter-type ballast is electrically connected to the input part and a second input from a non-inverter-type ballast having a frequency lower than a frequency of the first input when the non-inverter-type ballast is electrically connected to the input part; the rectifier part is configured to rectify the first input when the inverter-type ballast is electrically connected to the input part and to rectify the second input when the non-inverter-type ballast is electrically connected to the input part; the LED unit is electrically coupled between a first output terminal of the rectifier part and a first node; wherein the LED lamp further comprises: J a PWM control unit electrically coupled between a second node and a second output terminal of the rectifier part, the PWM control unit being configured to perform PWM control of a current flowing through the LED unit when the second input is provided to the input part; a diode electrically coupled between the first output terminal and the second node; a coil (L1, L2, L3, L4) electrically coupled between the first node and the second node; and a switching part electrically coupled between the first node and the second output terminal of the rectifier part, the switching part being configured to switch to a first state in which the first node is electrically connected with the second output terminal of the rectifier part when the first input is provided to the input part, and to switch to a second state in which the first node is electrically disconnected from the second output terminal of the rectifier part when the second input is provided to the input part, so that the LED unit is configured to emit light using a first current flowing through the switching part when the switching part switches to the first state and is configured to emit light using a second current flowing through the PWM control unit when the switching part switches to the second state. the input part (20a, 20b, 20c, 20d) configured to receive a first input from an inverter-type ballast when the inverter-type ballast is electrically connected to the input part and a second input from a non-inverter-type ballast having a frequency lower than a frequency of the first input when the non-inverter-type ballast is electrically connected to the input part; the rectifier part is configured to rectify the first input when the inverter-type ballast is electrically connected to the input part and to rectify the second input when the non-inverter-type ballast is electrically connected to the input part; the LED unit is electrically coupled between a first output terminal of the rectifier part and a first node; wherein the LED lamp further comprises: J a PWM control unit electrically coupled between a second node and a second output terminal of the rectifier part, the PWM control unit being configured to perform PWM control of a current flowing through the LED unit when the second input is provided to the input part; a diode electrically coupled between the first output terminal and the second node; a coil (L1, L2, L3, L4) electrically coupled between the first node and the second node; and a switching part electrically coupled between the first node and the second output terminal of the rectifier part, the switching part being configured to switch to a first state in which the first node is electrically connected with the second output terminal of the rectifier part when the first input is provided to the input part, and to switch to a second state in which the first node is electrically disconnected from the second output terminal of the rectifier part when the second input is provided to the input part, so that the LED unit is configured to emit light using a first current flowing through the switching part when the switching part switches to the first state and is configured to emit light using a second current flowing through the PWM control unit when the switching part switches to the second state. J a PWM control unit electrically coupled between a second node and a second output terminal of the rectifier part, the PWM control unit being configured to perform PWM control of a current flowing through the LED unit when the second input is provided to the input part; a diode electrically coupled between the first output terminal and the second node; a coil (L1, L2, L3, L4) electrically coupled between the first node and the second node; and a switching part electrically coupled between the first node and the second output terminal of the rectifier part, the switching part being configured to switch to a first state in which the first node is electrically connected with the second output terminal of the rectifier part when the first input is provided to the input part, and to switch to a second state in which the first node is electrically disconnected from the second output terminal of the rectifier part when the second input is provided to the input part, so that the LED unit is configured to emit light using a first current flowing through the switching part when the switching part switches to the first state and is configured to emit light using a second current flowing through the PWM control unit when the switching part switches to the second state.