TLVH432BQDBZT

Overview

The TLVH432BQDBZT 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 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 housed in a SOT-23-3 package and is qualified for automotive applications under AEC-Q100 standards, ensuring reliability across an extended temperature range of -40°C to +125°C.

Feature Summary

• Automotive-grade qualification compliant with AEC-Q100 standards for enhanced reliability in vehicle electronics.
• Low-voltage operation capability enabling precise regulation in systems powered by single-cell batteries or low-voltage rails.
• High initial accuracy of 0.5% ensures stable reference performance without requiring extensive external calibration.

Applications

• Battery-powered automotive instrumentation and sensor interfaces
• Low-voltage DC-DC converter feedback loops
• Portable electronic device power management circuits

Procurement Notes

Verify the specific suffix 'Q' confirms AEC-Q100 automotive qualification status before integration into safety-critical designs. Confirm the 'B' grade indicates the 0.5% initial accuracy tier required for your application's tolerance budget. Ensure the DBZT package variant matches your PCB footprint and reflow soldering profile specifications. Cross-reference the latest datasheet revision to confirm pinout consistency and electrical parameter updates.

Selection Notes

Select this component when designing for automotive environments requiring high precision at low voltages where standard TL432 devices exceed the supply rail. The 80 µA minimum current allows for efficient operation in battery-saving modes compared to higher current references. Consider the 138 PPM/°C temperature coefficient against environmental thermal variations. The SOT-23-3 package offers space efficiency for compact automotive modules.

Part Context

This part belongs to the TLVH432 family of low-voltage shunt regulators designed specifically for automotive and industrial applications. Unlike the standard TL432 series which typically supports up to 36 V, the TLVH432 is optimized for lower voltage domains. The 'Q' designation signifies automotive qualification, while 'B' denotes the tighter 0.5% accuracy bin, distinguishing it from the standard 1.5% accuracy variants.

Replacement Considerations

TLVH432BQDBZR: Identical electrical specifications and automotive qualification; differs only in tape-and-reel packaging format instead of cut tape.

FAQ

What is the minimum cathode current required for proper regulation?

The TLVH432BQDBZT requires a minimum cathode current of 80 µA to maintain regulation.

Is this component suitable for harsh automotive thermal environments?

Yes, it is qualified under AEC-Q100 and operates reliably within an extended temperature range of -40°C to +125°C.