The TPS92642-Q1 incorporates a 36-V rated linear regulator to generate the 5-V (typical) V_CC bias supply and other internal reference voltages. The V_CC output is monitored internally to by a UVLO circuit. Operation is enabled when V_CC exceeds the V_CC(UVLO) rising threshold and is disabled when V_CC drops below V_CC(UVLO) falling threshold. The comparator provides 200 mV of hysteresis to avoid chatter during transitions. The V_CC UVLO thresholds are internally fixed and cannot be adjusted. An internal current limit circuit is implemented to protect the device during VCC pin short-circuit conditions. The V_CC supply powers the internal circuitry, the low-side gate driver and the bootstrap supply for high-side gate driver. Place a bypass capacitor (4.7 μF to 10 μF) between VCC pin and AGND as close to the device as possible. The capacitor must be five times larger than the bootstrap capacitor, C_BST to support proper operation. The regulator operates in dropout when input voltage, V_IN, falls below 5 V, forcing V_CC to be lower than V_IN by V_DO for a 20-mA supply current. The V_CC is a regulated output of the internal regulator and is not recommended to be driven from an external power supply.