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|
|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%|
|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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