A driving circuit for driving light emission of a light emitting component, the driving circuit comprising: • a control circuit configured to receive a sense voltage (SENS) associated with a direct current, DC, source voltage, said control circuit being configured to generate a control signal, and • a converter circuit configured to receive the DC source voltage, the converter circuit coupled to said control circuit and configured to be coupled to the light emitting component, said converter circuit being a boost converter circuit, said driving circuit being characterized in that: • the DC source voltage is provided by at least one battery, • said boost converter circuit is configured to receive the control signal from said control circuit, and to provide a driving current for driving light emission of the light emitting component, the driving current having a magnitude positively correlated to the duty cycle of the control signal, wherein said control circuit includes: • a reference circuit configured to receive the sense voltage (SENS), and to generate a reference voltage (Vr) having a first preset voltage magnitude when the sense voltage (SENS) is lower than the first preset voltage magnitude, and having a second preset voltage magnitude higher than the first preset voltage magnitude when the sense voltage (SENS) is higher than the second preset voltage magnitude; • an oscillator circuit configured to generate an oscillating signal having a predetermined frequency and a triangular waveform, the control circuit further including a pulse width modulation circuit configured to receive the reference voltage (Vr) from said reference circuit and the oscillating signal from said oscillator circuit, to thereby generate the control signal by pulse width modulation, the control signal having a frequency associated with the oscillating signal, the duty cycle of the control signal being associated with the oscillating signal and the reference voltage (Vr), wherein the control circuit is configured to generate the control signal such that the duty cycle varies with the sense voltage (SENS) in a monotonically increasing manner when the reference voltage is between the first present voltage magnitude and the second preset voltage magnitude. • a control circuit configured to receive a sense voltage (SENS) associated with a direct current, DC, source voltage, said control circuit being configured to generate a control signal, and • a converter circuit configured to receive the DC source voltage, the converter circuit coupled to said control circuit and configured to be coupled to the light emitting component, said converter circuit being a boost converter circuit, said driving circuit being characterized in that: • the DC source voltage is provided by at least one battery, • said boost converter circuit is configured to receive the control signal from said control circuit, and to provide a driving current for driving light emission of the light emitting component, the driving current having a magnitude positively correlated to the duty cycle of the control signal, • a reference circuit configured to receive the sense voltage (SENS), and to generate a reference voltage (Vr) having a first preset voltage magnitude when the sense voltage (SENS) is lower than the first preset voltage magnitude, and having a second preset voltage magnitude higher than the first preset voltage magnitude when the sense voltage (SENS) is higher than the second preset voltage magnitude; • an oscillator circuit configured to generate an oscillating signal having a predetermined frequency and a triangular waveform, the control circuit further including a pulse width modulation circuit configured to receive the reference voltage (Vr) from said reference circuit and the oscillating signal from said oscillator circuit, to thereby generate the control signal by pulse width modulation, the control signal having a frequency associated with the oscillating signal, the duty cycle of the control signal being associated with the oscillating signal and the reference voltage (Vr), wherein the control circuit is configured to generate the control signal such that the duty cycle varies with the sense voltage (SENS) in a monotonically increasing manner when the reference voltage is between the first present voltage magnitude and the second preset voltage magnitude.