TLVH431QDBZR

Overview

The TLVH431QDBZR is a low-voltage adjustable precision shunt regulator manufactured by Texas Instruments. It operates within an output voltage range of 1.24 V to 18 V, set by two external resistors. The device features an initial accuracy of 0.5% 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 is rated for a maximum series reference input voltage of 20 V and functions across a temperature range of -40°C to +125°C. It is housed in a SOT-23-3 surface-mount package.

Feature Summary

• Adjustable output voltage capability ranging from the internal reference level up to 18 V via external resistor networks
• High precision performance characterized by 0.5% initial accuracy and stable thermal behavior
• Wide operational current range supporting both minimal standby consumption and high sink currents up to 80 mA
• Automotive-grade qualification ensuring reliability under extended temperature conditions

Applications

• Precision voltage references in automotive electronic control units
• Low-voltage power supply regulation circuits
• Battery management systems requiring accurate voltage monitoring
• Industrial sensor interface conditioning

Procurement Notes

Verify that the ordering suffix matches the specific quality grade and packaging format required for your application. Confirm the manufacturer source is Texas Instruments to ensure AEC-Q100 compliance. Check the datasheet revision date to validate parameter consistency. Ensure the SOT-23-3 footprint matches your PCB layout constraints. Validate RoHS status if environmental compliance is mandatory for your production process.

Selection Notes

Select this component when a low-voltage, high-precision shunt regulator is needed for automotive or industrial environments. The 0.5% accuracy suits applications demanding tight voltage tolerance. Consider the 80 mA cathode current limit for load driving requirements. The wide temperature range makes it suitable for harsh operating conditions compared to commercial-grade alternatives.

Part Context

This part belongs to the TLVH431B family of low-voltage adjustable precision shunt regulators. It shares functional similarities with other three-terminal voltage references but is distinguished by its specific accuracy class and automotive qualification. The device complements Texas Instruments' portfolio of power management ICs designed for robust system stability.

Replacement Considerations

TLVH431BQDBZRQ1G4

FAQ

What is the minimum cathode current required for proper regulation?

The device requires a minimum cathode current of 80 µA to maintain regulation.

Is this component qualified for automotive applications?

Yes, the TLVH431QDBZR is AEC-Q100 qualified for automotive use.