Determine which version of the TPS3702 best suits the application nominal rail and window tolerances. See Table 10-1 for selecting the appropriate device number for the application needs. If the nominal rail voltage to be monitored is not listed as an option, a resistor divider can be used to reduce the voltage to a nominal voltage that is available. The current I_SENSE causes an error in the voltage detected at the SENSE pin because the SENSE current only flows through the resistor at the top of the resistor divider. The larger the current through the resistor divider to ground, the smaller this error can be. To optimize this resistor divider, refer to application report Optimizing Resistor Dividers at a Comparator Input (SLVA450) for more information.

When the outputs switch to the high-Z state, the rise time of the UV or OV node depends on the pull-up resistance and the capacitance on that node. Choose pull-up resistors that satisfy both the downstream timing requirements and the sink current required to have a V_OL low enough for the application; 10kΩ to 1MΩ resistors are a good choice for low-capacitive loads.