TL1431AID

Overview

The TL1431AID is an adjustable shunt voltage reference manufactured by STMicroelectronics. It provides a guaranteed temperature stability over the entire operating range, with output voltage settable between 2.5 V and 36 V using two external resistors. The device operates within a wide current range of 1 to 100 mA and features a typical dynamic impedance of 0.2 Ω. It offers high precision with an initial accuracy of ±0.25% and a temperature coefficient of 100 PPM/°C. Designed for automotive applications, it meets AEC-Q100 standards and functions reliably from -40°C to +125°C.

Feature Summary

• Adjustable output voltage capability ranging from 2.5 V to 36 V via external resistors
• High precision with 0.25% initial accuracy and low temperature coefficient
• Automotive qualification compliant with AEC-Q100 standards
• Wide operating temperature range suitable for harsh environments

Applications

• Precision voltage references in automotive electronic systems
• Power supply feedback loops requiring stable reference voltages
• Battery management systems needing accurate monitoring
• Industrial control circuits demanding high thermal stability

Procurement Notes

Verify the specific suffix against official STMicroelectronics documentation to confirm package type and tolerance grade. Ensure the ordering code matches the required automotive qualification level. Confirm availability through authorized distributors as lead times may vary based on production schedules. Cross-reference datasheet revisions to ensure compatibility with existing design specifications.

Selection Notes

Select this component when high precision and automotive reliability are required. The 0.25% accuracy suits applications sensitive to voltage drift. Consider the 8-SOIC package for surface mount assembly constraints. Evaluate the 100 mA sink current against load requirements. Verify that the 36 V maximum input voltage aligns with system supply rails.

Part Context

This part belongs to the TL1431 series of adjustable shunt voltage references. It serves as a high-precision alternative to standard zener diodes in regulation circuits. The series is widely used in power management ICs for its stability and low cost. STMicroelectronics designs these components to meet rigorous automotive quality standards.

Replacement Considerations

TL1431AIDT is a direct pin-compatible replacement with identical electrical characteristics but different packaging format.