The TPS3851-Q1 device combines a precision voltage supervisor with a programmable
watchdog timer. The TPS3851-Q1 comparator achieves a 0.8% accuracy (–40°C to +125°C) for the
undervoltage (VITN) threshold. The TPS3851-Q1 also includes accurate
hysteresis on the undervoltage threshold making the device ideal for use with tight tolerance
systems. The supervisor RESET delay features a 15% accuracy, high-precision
delay timing.
The TPS3851-Q1 includes a programmable 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 watchdog timeouts can be
programmed either by an external capacitor, or by factory-programmed default delay settings. The
watchdog can be disabled via logic pins to avoid undesired watchdog timeouts during the development
process.
The TPS3851-Q1 is available in a small 3.00-mm × 3.00-mm, 8-pin VSON package. The
TPS3851-Q1 features wettable flanks that allow for easy optical inspection.
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