TLV431BQE5TA

Overview

The TLV431BQE5TA is an automotive-compliant, three-terminal adjustable shunt regulator manufactured by Diodes Incorporated. It provides a reference voltage of 1.24V with an initial tolerance of 0.5%. The device operates within a cathode voltage range of VREF to 18V and supports a continuous cathode current up to 20mA. It is qualified to AEC-Q100 Grade 1 standards and functions across an ambient temperature range of -40°C to +125°C. The component is housed in a surface-mount SOT25 package.

Feature Summary

• AEC-Q100 Grade 1 qualification for automotive applications
• Adjustable output voltage from 1.24V to 18V via external resistors
• Low dynamic output impedance for stable regulation
• RoHS compliant and halogen-free construction

Applications

• Automotive battery monitoring systems
• Precision voltage references in industrial control circuits
• Replacement for Zener diodes requiring improved stability
• Linear voltage regulators with adjustable output

Procurement Notes

Verify the specific suffix E5TA corresponds to the SOT25 package configuration as documented in the ordering information section. Confirm that the B designation indicates the required 0.5% initial accuracy band for your design specifications. Ensure procurement channels are authorized to guarantee compliance with AEC-Q100 Grade 1 quality standards and PPAP documentation availability.

Selection Notes

Select this component when high-accuracy voltage referencing is required in space-constrained automotive or industrial designs. The SOT25 package offers thermal advantages over standard SOT23 variants. Consider the 0.5% tolerance band if tighter voltage accuracy than the standard 1% version is necessary without moving to the end-of-life 0.2% option.

Part Context

This part belongs to the TLV431Q family of low-voltage adjustable precision shunt regulators designed specifically for automotive environments. Unlike standard commercial versions, the Q-series components undergo rigorous testing to meet AEC-Q100 reliability requirements. The family includes variants with different tolerance bands and package options to suit various design constraints.

Replacement Considerations

Direct replacements include other TLV431Q variants with matching tolerance bands (e.g., TLV431BQFTA for SOT23). Verify pinout compatibility between SOT23 and SOT25 packages if substituting form factors. Non-automotive TLV431 parts may lack the required AEC-Q100 qualification for automotive use cases.