TLVH431BQDBVRQ1

Overview

The TLVH431BQDBVRQ1 is an automotive-grade, low-voltage adjustable precision shunt regulator from the TLVH431B series. Manufactured by Texas Instruments, it operates within a supply voltage range up to 20 V and provides an adjustable output voltage up to 18 V. The device features an initial accuracy of 0.5% and a temperature coefficient of 161 PPM/°C. It supports a maximum shunt current of 80 mA and functions reliably across an extended temperature range from -40°C to +125°C. Packaged in a compact SOT-23-5 surface-mount format, it meets AEC-Q100 qualification standards for automotive applications.

Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards
• Low-voltage operation optimized for systems up to 20 V
• High initial accuracy with 0.5% tolerance specification

Applications

• Automotive power management circuits
• Precision voltage reference generation
• Battery monitoring systems

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm that the part number suffix matches the specific package and tape-and-reel configuration required for your assembly process. Ensure compliance with RoHS directives and check for any recent Product Change Notifications (PCN) regarding manufacturing site or material updates before finalizing procurement orders.

Selection Notes

Select this component when designing for automotive environments requiring low-voltage precision regulation. The 0.5% initial accuracy suits applications demanding tight voltage tolerances without external trimming. Consider the 80 mA current limit for load requirements and ensure the SOT-23-5 footprint aligns with PCB layout constraints. Verify thermal performance within the specified -40°C to +125°C operating range.

Part Context

This device belongs to the TLVH431B family of low-voltage shunt regulators designed specifically for automotive electronics. Unlike standard industrial counterparts, the Q1 suffix denotes qualification for automotive reliability standards. It serves as a direct replacement for legacy TL431 variants in low-voltage automotive designs, offering improved accuracy and lower voltage operation capabilities suitable for modern vehicle electrical architectures.

Replacement Considerations

The TL431AQDBVRQ1 is a related automotive-grade alternative but offers different electrical characteristics, including a higher maximum input voltage of 36 V and distinct accuracy specifications. Designers must evaluate these parameter differences carefully to ensure compatibility with existing circuit constraints before substituting components.