TPS3850G50DRCT

监控电路 Precision Voltage Supervisor With Window Watchdog Timer and Programmable Delay 10-VSON -40 to 125

The from Texas Instruments is a TPS3850 precision voltage supervisor with programmable window watchdog timer in 10 pin VSON package. The TPS3850 window comparator achieves 0.8% accuracy 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 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.

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Nominal monitored voltage is 5V

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VIT+OV = 4%, VIT-UV = -4%

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OV and UV monitoring supports common rails from 0.9V to 5V, ±4% fault windows, 0.5% hysteresis

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Watchdog is disabled via logic pins to avoid undesired watchdog timeouts during development process

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Input voltage range from VDD = 1.6V to 6.5V

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Low supply current IDD is 10µA typ

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Open-drain outputs

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Operating temperature range from -40°C to +125°C