The TPS3702 family of devices combines two comparators and a precision reference for overvoltage and undervoltage detection. The TPS3702 features a wide supply voltage range (2V to 18V) and highly accurate window threshold voltages (0.9% over temperature). The TPS3702 is designed for systems that require an active low signal if the voltage from the monitored power supply exits the accuracy band. The outputs can be pulled up to 18V and can sink up to 10mA.

Unlike many other window voltage detectors, the TPS3702 includes the resistors used to set the overvoltage and undervoltage thresholds internal to the device. These internal resistors allow for lower component counts and greatly simplifies the design because no additional margins are needed to account for the accuracy of external resistors.

The TPS3702 is designed to assert active low output signals when the monitored voltage is outside the window band. The relationship between the monitored voltage and the states of the outputs is shown in Table 6-1.