2U3823-50QDBVRG4Q1

Overview

The Texas Instruments 2U3823-50QDBVRG4Q1 is a processor supervisory circuit designed for automotive applications, meeting AEC-Q100 qualification standards. It functions as a voltage monitor with an integrated watchdog timer in a SOT-23-5 package. The device features a fixed threshold voltage of 4.55 V and provides a push-pull output configuration. Key electrical parameters include a maximum supply voltage of 6 V and a reset delay time of 200 ms. It supports manual reset functionality and operates within a specified temperature range suitable for harsh environments.

Feature Summary

• Integrated watchdog timer for system reliability monitoring
• Automotive-grade qualification ensuring robust performance
• Push-pull output stage for direct logic interfacing
• Manual reset capability for user-initiated system recovery

Applications

• Automotive electronic control units (ECUs)
• Microprocessor power supply monitoring systems
• Industrial control boards requiring watchdog protection
• Battery-powered devices needing voltage supervision

Procurement Notes

Verify the exact suffix G4Q1 to confirm automotive grade and RoHS compliance status. Confirm lead times as availability may vary due to production lifecycle stages. Ensure the SOT-23-5 footprint matches your PCB design constraints before ordering.

Selection Notes

Select this component when a fixed 4.55 V threshold is required for microprocessor reset generation. The push-pull output eliminates the need for external pull-up resistors compared to open-drain alternatives. Consider the integrated watchdog feature if software fault detection is necessary without additional discrete components.

Part Context

This part belongs to Texas Instruments' family of voltage supervisors and reset circuits. These components are engineered to monitor supply voltages and generate reset signals for digital systems. The specific model integrates watchdog functionality, distinguishing it from basic voltage monitors that lack timing fault detection capabilities.

Replacement Considerations

Check for equivalent parts with matching 4.55 V thresholds and push-pull outputs. Verify pin compatibility in the SOT-23-5 package. Ensure any substitute also meets AEC-Q100 requirements if used in automotive contexts.