TL431ACDR

Overview

The TL431ACDR is an adjustable shunt voltage reference integrated circuit manufactured by Texas Instruments. It operates within a cathode voltage range of 2.495V to 36V and supports a maximum cathode current of 100mA. The device features an initial accuracy tolerance of ±1% and a typical temperature coefficient of 92ppm/°C. Designed for surface-mount applications, it is housed in an 8-SOIC package with a width of 3.90mm. The component functions as a programmable Zener diode, offering high stability across the commercial operating temperature range of 0°C to 70°C.

Feature Summary

• Provides precise adjustable voltage reference functionality using a three-terminal shunt regulator topology
• Delivers stable performance with tight initial accuracy tolerance suitable for precision analog circuits
• Supports wide input voltage operation allowing flexible integration into various power management designs

Applications

• Precision power supply regulation and feedback loop control
• Programmable output voltage setting in DC-DC converters
• Comparator replacement in signal conditioning circuits

Procurement Notes

Verify that the specific order matches the 8-SOIC surface-mount package configuration and the ±1% accuracy grade designated by the 'A' suffix. Confirm compliance with RoHS standards and ensure the supplier provides valid traceability documentation for the active part status. Cross-reference the manufacturer part number against official distribution channels to guarantee authenticity and correct lot coding.

Selection Notes

Select this component when a low-cost, high-accuracy adjustable reference is required for commercial temperature environments. The 8-SOIC package facilitates automated assembly processes. Ensure the application voltage does not exceed the 36V maximum rating and that the thermal design accommodates the specified operating range without requiring extended industrial temperature variants.

Part Context

This device belongs to the TL431 family of programmable shunt regulators widely utilized in power electronics. It serves as a fundamental building block for feedback networks in switching mode power supplies. The 'D' suffix indicates the SOIC package style, while 'R' denotes tape and reel packaging for high-volume manufacturing efficiency.

Replacement Considerations

LM431ACM/NOPB