TL1431VTDB1

Overview

The TL1431VTDB1 is a precision adjustable shunt voltage reference manufactured by Texas Instruments. It operates within an output voltage range of 2.5 V to 36 V and supports a sink current capability of up to 100 mA. The device features a typical dynamic output impedance of 0.2 Ω and offers initial voltage tolerance options of 0.2% or 0.4%. It is qualified under QMLV standards for radiation hardness up to 100k Rad RHA.

Feature Summary

• Adjustable output voltage configuration between 2.5 V and 36 V using external resistors
• High radiation hardness qualification meeting QMLV requirements
• Fast turn-on time characteristic for rapid system response

Applications

• Radiation-hardened power management systems
• Precision analog signal conditioning circuits
• Military and aerospace electronic subsystems

Procurement Notes

Verify the specific suffix designation against the manufacturer datasheet to confirm the exact voltage tolerance grade and radiation qualification status. Ensure that the procurement documentation explicitly references QMLV compliance and the required initial voltage tolerance percentage to match design specifications.

Selection Notes

Select this component when high reliability in radiation environments is required. Consider the 0.2 Ω output impedance for stability needs. Evaluate the 100 mA sink current limit against load requirements. Confirm package compatibility if transitioning from standard commercial variants.

Part Context

This part belongs to the TL1431 series of adjustable shunt references. It differs from standard commercial versions by offering specialized qualification for harsh environments. The die-level packaging requires careful handling during integration into custom substrates or hybrid microcircuits.

Replacement Considerations

Standard TL1431 variants lack radiation hardness qualification. Verify pinout compatibility with existing layouts. Check if alternative QML-qualified parts meet the specific 100k Rad RHA requirement.