A preferred implementation of a switching converter with a versatile current sensor is achieved, by adding an integrator for instant sense current in the switching converter. The integrator calculates the average current of the switching converter and includes both positive and negative current sensing. The current sensor's response time is determined by the integrator coefficient and therefore not limited by the bandwidth of the current sensor. Performance degradation in the current sensor due to offset current is removed and the current sensor does not require a voltage reference or a current reference. High accuracy current monitoring and current sensing is achieved without an external sense device. The integrator of the current sensor serves to boost the gain of the switching converter.