TPS3850H18QDRCRQ1

The TPS3850-Q1 combines a programmable window watchdog timer with a high-accuracy voltage monitor. The TPS3850-Q1 window comparator achieves 0.8% accuracy (-40°C to +125°C) for both overvoltage (VIT+(OV)) and undervoltage (VIT-(UV)) thresholds at the SENSE pin. The TPS3850-Q1 also provides high-accuracy hysteresis under both threshold conditions, making it well-suited for systems with stringent tolerance requirements. The monitor's RESET delay can be set via a factory-programmed default delay setting or programmed externally using a capacitor. The factory-programmed RESET delay offers 9.5% accuracy with a high-precision delay time. The TPS3850-Q1 features a programmable window watchdog timer suitable for a wide range of applications. A dedicated watchdog output (WDO) helps improve resolution to assist in identifying the root cause of fault conditions. The window watchdog timeout can be set via a factory-programmed default delay setting or programmed externally using a capacitor. The watchdog can be disabled via a logic pin to prevent unexpected watchdog timeouts during development. The TPS3850-Q1 is available in a compact 3.00mm × 3.00mm, 10-pin VSON package. The TPS3850-Q1 features wettable flanks for easy optical inspection.

Applications

• On-Board Charger (OBC) and Wireless Charger
• Driver Monitoring
• Digital Cockpit Processing Unit
• ADAS Domain Controller
• Automotive Telematics Control Unit

Key features

• AEC-Q100 qualified with the following characteristics:
• 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
• Functional Safety capable
• Input voltage range: VDD = 1.6V to 6.5V
• 0.8% voltage threshold accuracy (maximum)
• 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 0.9V to 5.0V common voltage rails
• 4% and 7% fault windows available
• 0.5% hysteresis
• Watchdog disable function
• Small 3mm × 3mm 10-pin VSON package