SLOS854D May 2014 – March 2018 DRV2605L
The DRV2605L device has on-chip brownout protection. When activated, a reset signal is issued that returns the DRV2605L device to the initial default state. If the regulator voltage V(REG) goes below the brownout protection threshold (V(BOT)) the DRV2605L device automatically shuts down. When V(REG) returns to the typical output voltage (1.8 V) the DRV2605L device returns to the initial device state. The brownout protection threshold (V(BOT)) is typically at 0.84 V.
The previously described behavior has one exception. The brownout circuit is designed to tolerate fast brownout conditions as shown by Case 1 in Figure 16. If the VDD ramp-up rate is slower than 3.6 kV/s, then the device can fall into an unknown state. In such a situation, to return to the initial default state the device must be power-cycled with a VDD ramp-up rate that is faster than 3.6 kV/s.