TLV431BCDBVRE4

Overview

The TLV431BCDBVRE4 is a low-voltage adjustable precision shunt regulator manufactured by Texas Instruments. It operates within an input voltage range of 2.5 V to 36 V and provides an adjustable output voltage from 1.24 V to 36 V. The device features an initial accuracy of ±0.5% at 25°C and a temperature coefficient of 50 ppm/°C. It supports a cathode current range of 80 µA to 100 mA and functions across an operating temperature range of -40°C to +125°C. Packaged in a SOT-23-5 surface-mount case, it serves as a drop-in replacement for the TL431.

Feature Summary

• Adjustable reference voltage with high precision and low temperature drift
• Low dynamic output impedance for stable regulation under varying load conditions
• Wide operating supply voltage range suitable for low-voltage applications
• Surface-mount packaging designed for automated assembly processes

Applications

• Precision voltage references in portable electronic devices
• Programmable output regulators in power supplies
• Voltage monitoring circuits in battery-powered systems
• Error amplifiers in switching mode power converters

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status via official datasheets. Ensure storage conditions maintain moisture sensitivity level ratings. Validate package marking codes against manufacturer specifications. Check for end-of-life notifications or obsolescence warnings before finalizing procurement plans.

Selection Notes

Select this component when precise voltage referencing is required in space-constrained designs. The SOT-23-5 package offers compact footprint advantages over traditional TO-92 packages. Consider the ±0.5% initial accuracy for applications demanding tight tolerance levels. Evaluate thermal performance requirements against the specified operating temperature range.

Part Context

This part belongs to the TLV431 family of low-voltage adjustable shunt regulators. It maintains functional compatibility with the legacy TL431 while offering improved performance characteristics. The RE4 suffix indicates tape and reel packaging configuration. Texas Instruments designs this series for cost-sensitive consumer and industrial electronics markets.

Replacement Considerations

Direct pin-compatible substitutes include the TLV431ACDBVR and TLV431BQDBVR. Verify electrical parameter alignment before substitution. Ensure package dimensions match existing PCB footprints. Confirm that alternative components meet specific application temperature and accuracy requirements.