1 Features

• Input Voltage Range: 2V to 18V

• High threshold accuracy:

– 0.25% (typical)

– 0.9% (–40°C to 125°C)

• Fixed window thresholds optimized for nominal

rails between 1V and 5V

• Open-drain outputs for overvoltage and

undervoltage indication

• Internal glitch immunity

• Threshold adjust using the SET pin

• Low quiescent current: 7μA (typical)

• Internal threshold hysteresis: 0.55%, 1.0%

• SOT-6 package

2 Applications

• FPGA and ASIC applications

• DSP-based systems

• Industrial control systems

• Factory automation

• Personal electronics

• Building automation

• Motor drives

3 Description

The TPS3702 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 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 and is qualified for use over the

industrial temperature range of –40°C to 125°C.