TLVH431BQDBZR

Overview

The TLVH431BQDBZR is a low-voltage adjustable precision shunt regulator from Texas Instruments, designed for automotive applications. It features an output voltage range of 1.24 V to 18 V with an initial accuracy of ±0.5%. The device supports a maximum cathode current of 70 mA and operates within a temperature range of -40°C to +125°C. Packaged in a SOT-23-3 surface-mount case, it serves as a high-performance reference voltage source.

Feature Summary

• Provides precise voltage regulation with ±0.5% initial accuracy across the operating range.
• Capable of handling high cathode currents up to 70 mA for robust performance.
• Qualified for automotive environments with extended temperature operation capabilities.

Applications

• Automotive isolated feedback circuits
• Secondary side regulation in flyback switch-mode power supplies
• Voltage monitoring systems

Procurement Notes

Verify that the specific suffix 'Q' confirms AEC-Q100 automotive qualification status prior to integration. Ensure the SOT-23-3 package dimensions align with the target PCB footprint constraints. Confirm that the required cathode current does not exceed the 70 mA limit under worst-case thermal conditions.

Selection Notes

Select this component when automotive reliability and high accuracy are required alongside low-voltage operation. It offers superior performance compared to standard TL431 variants by supporting lower input voltages and higher current capacity. Consider the SOT-23-3 form factor for compact board designs requiring surface-mount assembly.

Part Context

This part belongs to the TLVH431 family of adjustable shunt regulators. It is distinct from the non-automotive TLVH431 series and the higher-voltage TL431 family. The 'Q' designation specifically indicates automotive-grade manufacturing and testing standards defined by Texas Instruments.

Replacement Considerations

TLVH431BQDBZRG4 is a verified equivalent variant within the same product line.