Due to the nature of the switching controller with a pulsating input current, a low-ESR input capacitor is required for best input-voltage filtering and also for minimizing the interference with other circuits caused by high input-voltage spikes. For the controller, a typical 2.2-µF capacitor can be used for the DRV5V_x_x pin to handle the transients on the driver. For the FET input, 10 µF of input capacitance (after derating) is recommended for most applications. To achieve the low-ESR requirement, a ceramic capacitor is recommended. However, the voltage rating and DC-bias characteristic of ceramic capacitors must be considered. For better input-voltage filtering, the input capacitor can be increased without any limit.