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 (VIT–(UV)) 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
The TPS3850 includes a programmable window watchdog timer for a wide variety of
applications. The dedicated watchdog output (WDO) enables increased
resolution to help determine the nature of fault conditions. The window watchdog timeouts can be
set by factory-programmed default delay settings, or programmed by an external capacitor. The
watchdog can be disabled via logic pins to avoid undesired watchdog timeouts during the development
The TPS3850 is available in a small 3.00-mm × 3.00-mm, 10-pin VSON package.
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