TPS3850H33DRCT

The TPS3850 combines a precision monitor with a programmable windowed watchdog timer. The TPS3850 window comparator achieves 0.8% accuracy on the SENSE pin for both overvoltage (VIT+(OV)) and undervoltage (VIT-(UV)) thresholds (–40°C to +125°C). In addition, the TPS3850 applies precise hysteresis to both thresholds, making it well-suited for systems with tight tolerance requirements. The monitor's RESET delay can be set via a factory-programmed default delay or programmed externally using a capacitor. The factory-programmed RESET delay offers 9.5% accuracy with a high-precision delay time. The TPS3850 features a programmable windowed watchdog timer suitable for a wide range of applications. A dedicated watchdog output (WDO) improves resolution to help identify the root cause of fault conditions. The windowed watchdog timeout can be set via a factory-programmed default delay or programmed externally using a capacitor. The watchdog can be disabled via a logic pin to prevent unintended watchdog timeouts during development. The TPS3850 is available in a compact 3.00mm × 3.00mm 10-pin VSON package.

Applications

• Ultrasonic scanner
• Storage area network
• Active antenna system mMIMO (AAS)
• Robotic servo drive
• Infusion pump
• HVAC controller

Key features

• Input voltage range: VDD = 1.6V to 6.5V
• 0.8% voltage threshold accuracy
• Low supply current: IDD = 10μA (typical)
• User-programmable watchdog timeout
• User-programmable reset delay
• Factory-programmed precision watchdog and reset timers
• Open-drain output
• Precision overvoltage and undervoltage monitoring: supports common voltage rails from 0.9V to 5.0V; ±4% and ±7% fault windows; 0.5% hysteresis
• Watchdog disable function
• Small 3mm × 3mm 10-pin VSON package
• Junction operating temperature range: -40°C to +125°C