Watchdog Timeout Period Externally Adjustable Voltage Detector

*AEC-Q100 (Grade1) compliant

The XD6131 series are voltage detectors with a watchdog function. The watchdog timeout time and release delay time can be set as desired using a single external capacitor. These voltage detectors are used for microprocessor monitoring, and when the power voltage reaches the detect voltage or an L→H pulse is not input to the watchdog pin within the watchdog timeout time, an L level signal is output from the RESETB pin.

The XD6131 series has a manual reset function. When the manual reset pin is set to Low level at any desired timing, an L level signal is output from the RESETB pin.

*TOREX’s automotive products (XD Series) are AEC-Q100 compliant.


Operating Ambient Temperature -40℃~+125℃
Operating Voltage Range 1.5V~6.0V
Detect Voltage(Standard) 1.6V, 2.2V, 2.3V, 2.4V, 2.9V, 3.0V, 3.1V, 4.4V, 4.5V, 4.6V
Hysteresis Width VDFL×5%
Detect Voltage Temperature Characteristics ±50ppm/℃
Output Configuration N-channel open drain
Low Quiescent Current 8.1μADetect
Functions Manual Reset
Watchdog Timeout Period 100ms(Cd=0.1μF)
Release Delay Time 100ms(Cd=0.1μF) (Power-on State)
10ms (Cd=0.1μF) (After Watchdog Timeout)
Environmentally Friendly EU RoHS compliant, Pb free

Typical Application Circuit

Technical Document


Package Number of Pins Pcs/Reel Package Size(mm)
SOT-26 6 3,000 2.8 x 2.9 x 1.3

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