SLOS825E December 2012 – April 2018 DRV2605
The DRV2605 PWM input uses a digital level-shifter. Therefore, as long as the input voltage meets the VIH and VIL levels, the vibration strength remains the same even if the digital levels vary. The DRV2605 device also features power-supply feedback. If the supply voltage drifts over time (because of battery discharge, for example), the vibration strength remains the same as long as enough supply voltage is available to sustain the required output voltage.