TL431AIDBVT

Overview

The TL431AIDBVT is a precision adjustable shunt regulator from Texas Instruments, housed in a compact SOT-23-5 surface-mount package. It operates with an initial accuracy of ±1% and supports an output voltage range from 2.5V to 36V. The device features a maximum cathode current of 100mA and maintains stability across a temperature range of -40°C to +125°C. With a typical temperature coefficient of 92ppm/°C and a minimum operating current of 600µA, it provides reliable reference performance for space-constrained designs requiring high precision.

Feature Summary

• Provides precise programmable reference voltage functionality within the specified operational range
• Ensures stable regulation through low temperature coefficient characteristics
• Enables compact system integration via small footprint surface-mount packaging

Applications

• Precision voltage references in portable electronic devices
• Feedback control loops in switching power supplies
• Voltage monitoring circuits in industrial instrumentation

Procurement Notes

Verify the specific suffix DBVT confirms the five-pin SOT-23 package configuration required for your layout. Ensure the ±1% accuracy grade meets your circuit tolerance requirements. Confirm the extended temperature range up to +125°C aligns with your environmental operating conditions. Cross-reference the datasheet for pinout compatibility if replacing existing components.

Selection Notes

Select this component when a high-precision adjustable reference is needed in a minimal footprint. The five-pin variant offers distinct pinout advantages over three-pin versions for certain board layouts. Consider the ±1% initial accuracy for applications demanding tight voltage tolerances without external trimming. Evaluate the thermal performance given the extended upper temperature limit.

Part Context

This part belongs to the widely used TL431 family of programmable shunt regulators. It serves as a standard solution for voltage referencing and feedback control in various analog and mixed-signal circuits. The device replaces older discrete zener diode solutions by offering superior stability and adjustability.

Replacement Considerations

Direct replacements include other TI variants such as TL431AIDBVR or TLA431AIDBZR, provided the package and electrical specifications match. Verify pinout compatibility when substituting with different package types.