TLVH431CPKG3

Overview

The TLVH431CPKG3 is a low-voltage adjustable precision shunt voltage reference manufactured by Texas Instruments. It operates within an input voltage range of up to 20 V and provides an adjustable output voltage from 1.24 V to 18 V. The device features an initial accuracy of 1% and a maximum temperature coefficient of 138 PPM/°C. It supports a cathode current range from 80 µA to 80 mA, with a typical dynamic impedance of 0.22 Ω. The component functions reliably across an operating temperature range of -40°C to +125°C and is housed in a SOT-89-3 surface-mount package.

Feature Summary

• Adjustable output voltage set via external resistor divider
• Low operating current suitable for power-constrained designs
• Guaranteed thermal stability over the full industrial temperature range

Applications

• Battery chargers
• Switch mode power supplies
• Data acquisition systems
• Energy management circuits

Procurement Notes

Verify the specific suffix 'C' against official datasheets to confirm the exact accuracy grade (typically 1%) and package variant. Confirm RoHS compliance status and check for End-of-Life notifications or Product Change Notices affecting availability. Ensure the ordering part number matches the required tolerance and thermal specifications for the target application.

Selection Notes

Select this component when a low-cost, adjustable shunt regulator is required for space-constrained applications using the SOT-89-3 package. It is suitable for designs needing precise voltage referencing with minimal quiescent current consumption. Verify that the load current requirements fall within the specified 80 µA to 80 mA operational window to ensure stable regulation.

Part Context

This part belongs to the TLVH431 series of low-voltage adjustable shunt regulators. It serves as a high-precision alternative to standard TL431 devices, offering improved performance at lower supply voltages. The series is designed for applications requiring small form factors and low power consumption while maintaining accurate voltage reference capabilities.

Replacement Considerations

Check for direct pin-compatible substitutes such as the TLVH431AQPKG3 or TLVH431BPKG3 if different accuracy grades are needed. Verify electrical parameter compatibility before substituting with generic shunt regulators.