TLVH431ACDCKTG4

Overview

The TLVH431ACDCKTG4 is an adjustable shunt voltage reference IC manufactured by Texas Instruments. It operates within a supply voltage range of 2.5 V to 18 V and provides an adjustable output voltage from 1.24 V to 18 V. The device features an initial accuracy of ±1.5% and supports a maximum cathode current of 70 mA. Designed for surface-mount applications, it utilizes the SC-70-6 (SOT-363) package. The component is rated for an operating temperature range of -40°C to 125°C and includes a typical cathode current of 100 µA.

Feature Summary

• Adjustable shunt regulator topology with wide input voltage capability up to 18 V
• High precision performance with ±1.5% initial accuracy specification
• Extended industrial temperature rating suitable for demanding environments
• Compact surface-mount packaging optimized for space-constrained designs

Applications

• Portable battery-powered equipment requiring low quiescent current
• Voltage reference sources in data acquisition systems
• Feedback control loops in switching power supplies
• Comparator threshold setting circuits

Procurement Notes

Verify the specific suffix configuration against official Texas Instruments documentation to ensure compatibility with required tolerance and temperature grades. Confirm that the SC-70-6 footprint matches the target PCB layout constraints. Cross-reference the RoHS compliance status and moisture sensitivity level requirements with assembly specifications prior to procurement.

Selection Notes

Select this component when an 18 V input limit is sufficient compared to standard 36 V references. The ±1.5% accuracy offers a balance between cost and precision for general-purpose applications. Ensure the 70 mA cathode current capability meets the load requirements of the feedback network. Verify that the SC-70-6 package dimensions align with available board space.

Part Context

This part belongs to the TLVH43x family of low-voltage adjustable shunt regulators. It shares functional similarities with the TL431 series but is optimized for lower voltage operation and reduced current consumption. The device integrates a high-gain operational amplifier driving a zener reference diode, enabling precise voltage regulation in compact form factors suitable for modern electronic devices.

Replacement Considerations

Direct substitutes include the TLVH431ACDCKT and TLVH431ACDCKTE4. Alternative packages such as SOT-23-5 may require schematic and layout modifications.