TLV431BQDBVTE4

Overview

The TLV431BQDBVTE4 is a low-voltage adjustable precision shunt regulator from Texas Instruments, designed for high-accuracy applications. It operates within an input voltage range of up to 20 V and supports an adjustable output voltage. The device features an initial accuracy of 0.5% and a temperature coefficient of 138 PPM/C. It accommodates a maximum shunt current of 80 mA with a minimum cathode current of 80 uA. The component functions reliably across a wide temperature range from -40 C to +125 C. It is housed in a compact SOT-23-5 surface-mount package, suitable for space-constrained designs requiring stable voltage referencing.

Feature Summary

• Provides adjustable precision voltage regulation with high initial accuracy
• Supports wide operating temperature range for industrial environments
• Features low minimum cathode current for efficient standby operation
• Utilizes compact SOT-23-5 surface-mount packaging

Applications

• Precision voltage reference circuits
• Feedback loop compensation in power supplies
• Comparator-based threshold detection systems
• Battery management system monitoring

Procurement Notes

Verify the specific suffix 'E4' against the latest manufacturer datasheet to confirm environmental compliance and lead-free status. Confirm that the SOT-23-5 package matches the target PCB footprint requirements. Check for any obsolescence notices or lifecycle changes directly from Texas Instruments, as distribution data may reflect temporary availability rather than long-term supply stability.

Selection Notes

Select this component when a low-voltage adjustable reference with 0.5% accuracy is required. Ensure the application voltage does not exceed the 20 V maximum series rating. Verify that the thermal environment stays within the -40 C to +125 C operational limits. Consider the 80 mA current capability against load requirements. Compare against standard TLV431 variants if automotive qualification is not strictly necessary.

Part Context

This part belongs to the TLV431B family of adjustable shunt regulators. It shares functional similarities with other TLV431 variants but offers specific performance characteristics tailored for precision applications. The device serves as a direct replacement for older Zener diode references in many linear regulation contexts, offering improved stability and lower noise profiles.

Replacement Considerations

Direct substitutes include TLVH431BCDBVTE4 for extended specifications. Standard non-automotive equivalents like TLV431IDBVTG4 may be considered if automotive grade requirements are not mandatory. Always verify pinout compatibility and electrical parameter overlaps before substitution.