SLUSDQ4 April 2019 BQ79606A-Q1
The DVDD low dropout regulator (LDO) is the supply for the digital circuits in the BQ79606A-Q1. The supply for DVDD comes from LDOIN. DVDD contains an overvoltage comparator that signals a fault (RAIL_FAULT[DVDDOV]) when the voltage at DVDD rises above VDVDDOV. Additionally, DVDD contains a comparator that sets digital in reset mode if DVDD drops below VDRDVDD. Additionally, the DVSS pin is monitored continuously and the SYS_FAULT2[DVSS_OPEN] bit is set if an 'open' condition is detected for DVSS.