2T03G15QDCKRG4Q

Overview

The TPS3803-Q1 is an automotive-grade, single-channel voltage detector designed for monitoring power supply rails in harsh environments. It operates within a supply voltage range of up to 6 V and features an adjustable threshold voltage with a typical nominal setting of 1.5 V. The device provides an active-low, open-drain output signal to indicate under-voltage conditions. It is housed in a compact SC-70-5 (DCK) package and supports operation across an extended temperature range from -40°C to +125°C. With a typical quiescent current of 3 µA and accuracy of 1.5%, it ensures reliable system supervision while minimizing power consumption.

Feature Summary

• Single-channel voltage detection with adjustable threshold capability
• Active-low open-drain output for direct interface with microcontrollers
• Automotive qualification compliant with AEC-Q100 standards
• Low quiescent current design for energy-efficient battery-powered applications

Applications

• Monitoring main power rails in automotive electronic control units
• Battery backup switching circuits in vehicle infotainment systems
• Under-voltage protection for sensors and actuators in chassis electronics
• Power sequence supervision in body control modules

Procurement Notes

Verify the complete part number including suffixes such as G4Q1 to ensure correct packaging and automotive grade compliance. Confirm that the SC-70-5 package variant matches your PCB footprint requirements. Check RoHS and REACH compliance status for regulatory adherence. Ensure the supplier provides traceability documentation required for automotive manufacturing processes. Validate that the component is sourced from authorized distributors to avoid counterfeit risks.

Selection Notes

Select this component when a single-channel supervisor with adjustable threshold is required for automotive applications. Consider the 1.5 V typical threshold if monitoring low-voltage logic supplies. The open-drain output requires an external pull-up resistor; ensure compatibility with the target logic voltage level. Evaluate the 3 µA quiescent current against system power budgets. Verify that the -40°C to +125°C operating range meets environmental specifications.

Part Context

This part belongs to the TPS3803-Q1 family of single-channel voltage detectors from Texas Instruments. It is specifically engineered for automotive use, meeting AEC-Q100 reliability standards. The series offers configurable thresholds and low power consumption, making it suitable for critical power management tasks in vehicles where space and efficiency are constrained.

Replacement Considerations

Direct substitutes include other AEC-Q100 qualified single-channel voltage detectors in SC-70-5 packages with similar threshold ranges. Verify pinout compatibility and output type (open-drain vs. push-pull) before substitution. Ensure equivalent operating temperature and supply voltage specifications are maintained.