TPS3702 High-Accuracy, Fixed-Threshold OV/UV Monitor | TI.com

TPS3702 (ACTIVE)

High-Accuracy, Fixed-Threshold OV/UV Monitor

 

Description

The TPS3702 is an integrated overvoltage and undervoltage window detector in a small SOT-6 package. This highly accuracy voltage monitor is ideal 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 its 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 7 µA and is qualified for use over the industrial temperature range of –40°C to 125°C.

Features

  • Input Voltage Range: 2 V to 18 V
  • High Threshold Accuracy:
    • 0.25% (typ)
    • 0.9% (–40°C to 125°C)
  • Fixed Window Thresholds Optimized for Nominal Rails Between 1 V and 5 V
  • Open-Drain Outputs for Overvoltage and Undervoltage Indication
  • Internal Glitch Immunity
  • Threshold Adjust Using the SET Pin
  • Low Quiescent Current: 7 µA (typ)
  • Internal Threshold Hysteresis: 0.55%, 1.0%
  • SOT-6 Package

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Parametrics Compare all products in Supervisor & reset ICs

 
Threshold Voltage 1 (Typ) (V)
Number of supplies monitored
VCC (Max) (V)
VCC (Min) (V)
Output driver type/reset output
Time Delay (ms)
Features
Rating
Operating temperature range (C)
Watchdog timer WDI (sec)
TPS3702 TPS3700 TPS3701 TPS3710 TPS3711 TPS3847
Adjustable
1
1.2
1.8
3.3
5    
Adjustable     Adjustable     Adjustable     Adjustable     8.5
10.8    
1     1
2    
1
2    
1     1     1    
18     18     36     18     36     18    
2     1.8     1.8     1.8     1.8     4.5    
Active-low
Open-drain    
Active-low
Open-drain    
Active-low
Open-drain    
Active-low
Open-drain    
Active-low
Open-drain    
Active-low
Push-pull    
0     0     0     0     0     5    
Undervoltage & overvoltage monitor
Wide input voltage
Dual output    
Undervoltage & overvoltage monitor
Wide input voltage
Dual output    
Undervoltage & overvoltage monitor
Wide input voltage
Dual output    
Wide input voltage     Wide input voltage     Active-low enable
Manual reset
Ease-of-use
Wide input voltage    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 105    
None     None     None     None     None     None