TLV431AH6TA

Overview

The TLV431AH6TA is a three-terminal adjustable shunt regulator manufactured by Diodes Incorporated in the SC70-6 (SOT363) package. It provides an adjustable output voltage ranging from VREF to 18V, set via external divider resistors. The device features a reference voltage tolerance of 1% at +25°C and operates within an ambient temperature range of -40°C to +125°C. It supports a continuous cathode current up to 20mA with a minimum regulation current of 80µA. The component is lead-free, RoHS compliant, and halogen/antimony free.

Feature Summary

• Adjustable output voltage capability between VREF and 18V using external resistors
• High initial accuracy with 1% tolerance grade for the A variant
• Low operating current with typical temperature drift characteristics across wide ranges
• Totally lead-free construction fully compliant with RoHS directives

Applications

• Secondary side regulated supplies in isolated power converters
• Increasing output voltage of fixed linear regulators
• Basic series regulator implementations
• Series regulators with current limit protection

Procurement Notes

Verify the specific ordering suffix AH6TA corresponds to the SC70-6 package and 1% tolerance grade as listed in the official Diodes Incorporated ordering information table. Confirm that the reel size and packing quantity match project requirements. Ensure compliance with environmental standards such as RoHS and halogen-free definitions provided in the datasheet notes before finalizing procurement.

Selection Notes

Select this component when a cost-effective shunt regulator with high precision is required for low-voltage applications. The 1% tolerance grade suits designs needing tighter reference voltage control compared to standard zener diodes. Consider the SC70-6 package for space-constrained surface mount layouts. Ensure the design accounts for the minimum cathode current requirement to maintain stable regulation under all load conditions.

Part Context

The TLV431 series serves as a replacement for zener diodes where improved performance is necessary. It offers excellent temperature stability and output current handling capabilities. The family includes multiple grades (A, B, T) with varying tolerances and packages like SOT23, SOT25, and SC70-6. This specific part belongs to the standard commercial grade line, distinct from the automotive-compliant TLV431Q variants.

Replacement Considerations

Direct replacements include other TLV431 variants with different tolerances or packages, such as TLV431AFTA (SOT23) or TLV431BE5TA (SOT25). Verify pin compatibility and thermal dissipation limits when substituting packages. Automotive applications require switching to the TLV431Q series.