SNVSBY7 March 2021 TPS92390
The TPS92390 device supports VIN undervoltage and overvoltage protection. The undervoltage threshold is programmable through external resistor divider on UVLO pin. If during operation of the TPS92390 device, the UVLO pin voltage falls below the UVLO falling level (0.787 V typical), the boost, LED outputs, and power-line FET will be turned off, and the device will enter STANDBY mode. The VINUVLO_STATUS bit is also set in the SUPPLY_FAULT_STATUS register, and the INT pin is triggered. When the UVLO voltage rises above the rising threshold level the TPS92390 exits STANDBY and begins the start-up sequence.