TPS3700 High-voltage (18-V) window voltage detector for OV & UV monitoring |

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High-voltage (18-V) window voltage detector for OV & UV monitoring


Recommended alternative parts

  • TPS3700-Q1  -  AEC-Q100 qualified version of this device for automotive applications
  • TPS3701  -  Offers the same functionality for input voltages up to 36 V
  • TPS3710  -  Offers the same functionality but used only for undervoltage detection


The TPS3700 wide-supply window voltage detector operates over a 1.8-V to 18-V range. The device has two high-accuracy comparators with an internal 400-mV reference and two open-drain outputs rated to 18 V for over- and undervoltage detection. The TPS3700 can be used as a window voltage detector or as two independent voltage monitors; the monitored voltage can be set with the use of external resistors.

OUTA is driven low when the voltage at INA+ drops below (VITP – VHYS), and goes high when the voltage returns above the respective threshold (VITP). OUTB is driven low when the voltage at INB– rises above VITP, and goes high when the voltage drops below the respective threshold (VITP – VHYS). Both comparators in the TPS3700 include built-in hysteresis for filtering to reject brief glitches, thereby ensuring stable output operation without false triggering.

The TPS3700 is available in a SOT-6 and a 1.5-mm × 1.5-mm WSON-6 package and is specified over the junction temperature range of –40°C to 125°C.


  • Wide supply voltage range: 1.8 V to 18 V
  • Adjustable threshold: down to 400 mV
  • High threshold accuracy:
    • 1.0% over temperature
    • 0.25% (Typical)
  • Low quiescent current: 5.5 µA (Typical)
  • Open-drain outputs for overvoltage and undervoltage detection
  • Internal hysteresis: 5.5 mV (Typ)
  • Temperature range: –40°C to 125°C
  • Packages:
    • SOT-6
    • 1.5-mm × 1.5-mm WSON-6

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Part number Order 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)
TPS3700 Order now Adjustable     1
18     1.8     Active-low
0     Undervoltage and overvoltage monitor
Wide input voltage
Dual output
Safety documentation    
Catalog     -40 to 125     None