A LED driver for controlling an amount of power delivered to an electrical load, the LED driver comprising: a power converter to generate a variable direct-current bus voltage; a drive circuit configured to receive the bus voltage from the power converter, the drive control circuit comprising: regulation transistor adapted to be coupled in series with the load to control a magnitude of a load current conducted through the load, so as to control the amount of power delivered to the load; and an adjustable-gain feedback circuit coupled in series with the regulation transistor and operable to generate a load current feedback signal representative of the magnitude of the load current, the adjustable-gain feedback circuit comprising first and second resistors (R772, R774) coupled in series with the regulation transistor, and a gain-adjustment transistor coupled across the second resistor; and a control circuit operatively coupled to the regulation transistor for controlling the regulation transistor to thus adjust the magnitude of the load current through the load, the control circuit further coupled to the adjustable-gain feedback circuit for rendering the gain-adjustment transistor conductive and non-conductive, such that the series combination of the first and second resistors (R772, R774) is coupled in series with the regulation transistor when the gain-adjustment transistor is non-conductive, and only the first resistor is coupled in series with the regulation transistor when the gain-adjustment transistor is conductive; and wherein the control circuit renders the gain-adjustment transistor non-conductive when the magnitude of the load current is less than a threshold current (I TH). a power converter to generate a variable direct-current bus voltage; a drive circuit configured to receive the bus voltage from the power converter, the drive control circuit comprising: regulation transistor adapted to be coupled in series with the load to control a magnitude of a load current conducted through the load, so as to control the amount of power delivered to the load; and an adjustable-gain feedback circuit coupled in series with the regulation transistor and operable to generate a load current feedback signal representative of the magnitude of the load current, the adjustable-gain feedback circuit comprising first and second resistors (R772, R774) coupled in series with the regulation transistor, and a gain-adjustment transistor coupled across the second resistor; and regulation transistor adapted to be coupled in series with the load to control a magnitude of a load current conducted through the load, so as to control the amount of power delivered to the load; and an adjustable-gain feedback circuit coupled in series with the regulation transistor and operable to generate a load current feedback signal representative of the magnitude of the load current, the adjustable-gain feedback circuit comprising first and second resistors (R772, R774) coupled in series with the regulation transistor, and a gain-adjustment transistor coupled across the second resistor; and a control circuit operatively coupled to the regulation transistor for controlling the regulation transistor to thus adjust the magnitude of the load current through the load, the control circuit further coupled to the adjustable-gain feedback circuit for rendering the gain-adjustment transistor conductive and non-conductive, such that the series combination of the first and second resistors (R772, R774) is coupled in series with the regulation transistor when the gain-adjustment transistor is non-conductive, and only the first resistor is coupled in series with the regulation transistor when the gain-adjustment transistor is conductive; and wherein the control circuit renders the gain-adjustment transistor non-conductive when the magnitude of the load current is less than a threshold current (I TH).