The TPS3850 combines a precision voltage supervisor with a programmable window watchdog timer. The TPS3850 window comparator achieves 0.8% accuracy (–40°C to +125°C) for both overvoltage (VIT+(OV)) and undervoltage thresholds. The TPS3850 also includes accurate hysteresis on both thresholds, making the device ideal for use with tight tolerance systems. The supervisor RESET delay can be set by factory-programmed default delay settings, or programmed by an external capacitor. The factory-programmed RESET delay features a 15% accuracy, high-precision delay timing.



Features Over Voltage Sense^Watchdog Disable^Watchdog Timer^Window Comparator^Window Watchdog
Junction Operating Temperature Range -40 deg C to +125 deg C
Rating Catalog
Operating Temperature Range -40 to 125
Watchdog Timer WDI Programmable
Threshold Accuracy 0.8% Voltage
Supports Common Rails 0.9 V to 5.0 V
Fault Windows Available +-4% and +-7%
Hysteresis 0.5%
Low Supply Current IDD = 10 uA (typ)
Input Voltage Range VDD = 1.6 V to 6.5 V
Threshold Voltage Adjustable^1.11^1.15^1.67^1.72^2.79^2.88^3.06^3.16^4.65^4.8 1 (Typ) (V)
Number of Supplies Monitored 1


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