TL431AQDBVRQ1G4

Overview

The TL431AQDBVRQ1G4 is an automotive-grade adjustable precision shunt regulator from Texas Instruments, designed for robust power management applications. It operates within a supply voltage range up to 36 V and provides a reference input voltage maximum of 2.52 V. The device supports a maximum shunt current of 100 mA with a minimum operating current of 700 uA. Packaged in a compact SOT-23-5 surface-mount format, it ensures reliable performance across an extended industrial temperature range from -40°C to +125°C. This component meets AEC-Q100 qualification standards, making it suitable for demanding automotive environments requiring high accuracy and stability.

Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards for harsh environment operation
• Adjustable output voltage capability allowing flexible circuit design configurations
• High thermal stability maintained across the full industrial temperature spectrum
• Compact SOT-23-5 package optimized for space-constrained printed circuit board layouts

Applications

• Automotive power supply regulation circuits
• Precision voltage reference generation in vehicle electronics
• Battery management system monitoring interfaces
• Industrial control system feedback loops

Procurement Notes

Verify the complete part number including the G4 suffix to ensure compliance with specific environmental or manufacturing requirements. Confirm that the SOT-23-5 footprint matches your PCB design constraints. Check for any recent Product Change Notifications (PCN) regarding material or process updates. Ensure compatibility with your assembly equipment for surface-mount technology. Validate that the AEC-Q100 qualification aligns with your automotive project specifications.

Selection Notes

Select this component when automotive certification is mandatory for your application. Choose the SOT-23-5 package if board space is limited compared to larger alternatives. Consider the 100 mA shunt current limit for load requirements. Evaluate the 92 PPM/C temperature coefficient against your precision needs. Compare against standard TL431 variants if automotive grade is not required for cost optimization.

Part Context

This device belongs to the TL431 family of adjustable shunt regulators, widely used in power supply designs. The AQDBVRQ1 designation indicates its automotive qualification and specific packaging variant. It serves as a critical reference element in feedback networks for switching regulators and linear power supplies. The G4 suffix typically denotes lead-free and RoHS-compliant manufacturing processes, aligning with modern environmental standards for electronic components.

Replacement Considerations

Direct replacements include other AEC-Q100 qualified TL431 variants such as TL431AQDBVRQ1. Verify pinout compatibility before substitution. Ensure equivalent electrical parameters like shunt current and temperature coefficient are met. Check for any functional safety certifications if required by your application.