TLVH432AQPK

Overview

The TLVH432AQPK is a low-voltage adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a supply voltage range of 2.5 V 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 temperature coefficient of 138 ppm/°C. It supports a maximum cathode current of 80 mA with a minimum operating current of 80 µA. The component functions reliably across an extended temperature range of -40°C to +125°C and is housed in a compact SOT-89-3 surface-mount package.

Feature Summary

• Provides precise voltage regulation with ±1% initial accuracy for stable reference applications
• Operates efficiently at low voltages starting from 2.5 V, suitable for battery-powered systems
• Supports wide output adjustment from 1.24 V to 18 V using external resistors
• Maintains performance across industrial temperature ranges up to 125°C

Applications

• Battery-operated equipment requiring stable voltage references
• Portable instruments needing low-power precision regulation
• Power supply circuits utilizing shunt regulation topologies
• Temperature compensation networks in electronic systems

Procurement Notes

Verify the specific suffix AQPK to confirm the ±1% accuracy grade and SOT-89-3 package configuration. Ensure compatibility with moisture sensitivity level 2 requirements during storage and handling. Confirm RoHS compliance status for environmental regulations. Validate that the application circuit respects the maximum 20 V input limit and thermal constraints for the SOT-89 package.

Selection Notes

Select this component when high precision is required alongside low-voltage operation capabilities. The ±1% tolerance distinguishes it from standard variants offering lower accuracy. Consider the SOT-89-3 footprint for space-constrained designs. Evaluate the 138 ppm/°C temperature coefficient against thermal stability requirements. Compare against fixed-reference alternatives if adjustable output is not necessary for the design.

Part Context

This part belongs to the TLVH432 family of low-voltage adjustable shunt regulators from Texas Instruments. It shares architectural similarities with the TLVH431 but offers distinct accuracy grades indicated by the suffix. The Q variant denotes specific manufacturing tolerances compared to other series members. It serves as a cost-effective solution for precision reference needs in power management integrated circuits.

Replacement Considerations

Direct substitutes include TLVH432QPK for similar performance with slightly different accuracy specifications. The TLVH432AIPK offers identical electrical characteristics but may differ in packaging or reel specifications. Verify pinout compatibility and thermal resistance values before substitution.