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 on the
SENSE pin. 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 9.5% accuracy, high-precision delay
timing.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 process.The TPS3850 is available in a small
3.00-mm × 3.00-mm, 10-pin VSON package.
