Automotive high-accuracy window voltage detector for overvoltage and undervoltage monitoring

The TPS3702-Q1 is an integrated

overvoltage and undervoltage window voltage detector in a small SOT-6 package. This

highly accurate voltage detector is an excellent choice for systems that operate on

low-voltage supply rails and have narrow margin supply tolerances. Low threshold

hysteresis options of 0.55% and 1.0% prevent false reset signals when the monitored

voltage supply is in the normal range of operation. Internal glitch immunity and

noise filters further eliminate false resets resulting from erroneous signals.

The TPS3702-Q1 does not require

any external resistors for setting overvoltage and undervoltage reset thresholds,

which further increases overall accuracy and reduces solution size and cost. The SET

pin is used to select between the two available threshold voltages designed into

each device. A separate SENSE input pin and VDD pin allow for the redundancy sought

by safety-critical and high-reliability systems. This device also features

independent reset outputs for the OV and UV pins; as a result of the open-drain

configuration, UV and OV can be tied together.

This device has a low typical

quiescent current specification of 7µA .

The TPS3702-Q1 is designed for automotive

applications and is qualified for AEC-Q100 Grade 1.