TPS3430WQDRCRQ1

Overview

The TPS3430WQDRCRQ1 is an automotive-grade window watchdog timer manufactured by Texas Instruments. It operates within a supply voltage range of 1.6 V to 6.5 V and features a threshold voltage of 6.5 V. The device draws a typical supply current of 10 µA and provides an active-low, open-drain output. It includes a programmable reset delay and supports manual disable via the SET pin. Certified under AEC-Q100, it functions reliably across a junction temperature range of -40°C to +125°C.

Feature Summary

• Factory-programmed precision watchdog timer with ±15% accuracy over the full temperature range and ±2.5% typical accuracy at 25°C
• Low power consumption with a typical supply current (IDD) of 10 µA
• Supports manual watchdog disable via the SET pin to prevent unnecessary timeouts during development or power-up
• Available in a compact 3 mm × 3 mm, 10-pin VSON package

Applications

• Video surveillance systems
• Sensor transmitters
• HVAC thermostats
• Fire safety devices including heat and smoke detectors
• Medical personal care and fitness equipment

Procurement Notes

Verify the specific factory-programmed timeout and reset delay values required for the application, as these are fixed at the time of manufacture. Confirm that the VSON-10 package footprint matches the PCB design. Ensure the system logic can handle the active-low open-drain output configuration without external pull-ups if not already present in the circuit design.

Selection Notes

Select this component when an automotive-compliant watchdog timer with low quiescent current is required. The TPS3430WQDRCRQ1 is suitable for designs needing a single monitored input and a fixed threshold of 6.5 V. Consider the ±15% timing tolerance across the extended temperature range (-40°C to +125°C) when designing the system's fault recovery timing constraints.

Part Context

This part belongs to the TPS343x-Q1 family of window watchdog timers from Texas Instruments. The 'W' suffix indicates a specific factory-programmed timing configuration, while 'QDR' denotes the VSON-10 package and lead finish. The 'CRQ1' suffix identifies the automotive grade qualification and reel packaging format.

Replacement Considerations

Other members of the TPS343x family may serve as alternatives if different factory-programmed timing values are acceptable. Verify that any substitute maintains the same VSON-10 package dimensions and AEC-Q100 automotive qualification status.