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 on the VDD pin. 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.
