TPS3850-Q1

• AEC-Q100 Qualified with the Following Results:
  • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
  • Device HBM ESD Classification Level 2
  • Device CDM ESD Classification Level C4B
• Input Voltage Range: V_DD = 1.6 V to 6.5 V
• 0.8% Voltage Threshold Accuracy (Max)
• Low Supply Current: I_DD = 10 µA (typ)
• User-Programmable Watchdog Timeout
• User-Programmable Reset Delay
• Factory Programmed Precision Watchdog and Reset Timers:
  • ±15% Accurate WDT and RST Delays
• Open-Drain Outputs
• Precision Over- and Undervoltage Monitoring:
  • Supports Common Rails from 0.9 V to 5.0 V
  • 4% and 7% Fault Windows Available
  • 0.5% Hysteresis
• Watchdog Disable Feature
• Available in a Small 3-mm × 3-mm, 10-Pin VSON Package

All trademarks are the property of their respective owners.

The TPS3850-Q1 combines a precision voltage supervisor with a programmable window watchdog timer. The TPS3850-Q1 window comparator achieves 0.8% accuracy (–40°C to +125°C) for both overvoltage (V_IT+(OV)) and undervoltage (V_IT–(UV)) thresholds. The TPS3850-Q1 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-Q1 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-Q1 is available in a small 3.00-mm ×
3.00-mm, 10-pin VSON package. The TPS3850-Q1 features wettable flanks for easy optical inspection.