TL431AIDCKR

Overview

The TL431AIDCKR is a precision programmable shunt regulator from Texas Instruments, part of the TL431 series. It operates with an adjustable output voltage ranging from 2.495 V to 36 V. The device features an initial accuracy of ±1% and a maximum cathode current of 100 mA. It functions within a temperature range of -40°C to 85°C. Packaged in a SC-70-6 surface-mount case, it utilizes a minimum reference current of 600 µA for regulation.

Feature Summary

• Provides precise adjustable voltage referencing via external resistor divider
• Ensures stable regulation through sharp turn-on characteristics
• Supports surface-mount integration in compact designs

Applications

• Power supply feedback loops
• Voltage monitoring circuits
• Comparator replacements

Procurement Notes

Verify the specific suffix 'CKR' corresponds to the SC-70-6 package and tape-and-reel delivery format. Confirm that the ±1% accuracy grade meets circuit requirements. Ensure thermal management aligns with the 85°C operating limit. Cross-reference datasheet revisions for any pinout or electrical specification updates prior to finalizing procurement orders.

Selection Notes

Select this component when high accuracy is required in a small footprint. The SC-70-6 package suits space-constrained applications. Verify input voltage stays below 36 V. Ensure load conditions maintain current above the minimum reference threshold. Consider thermal dissipation if operating near maximum current limits.

Part Context

This device belongs to the widely used TL431 family of programmable references. It serves as a direct replacement for Zener diodes in many linear regulator topologies. The SC-70-6 variant offers a compact alternative to larger SOIC packages while maintaining similar electrical performance characteristics for general-purpose voltage regulation tasks.

Replacement Considerations

Compatible substitutes include TL431AIDCKT and TL431AIDCKRE4. Verify package compatibility and accuracy grades before substitution.