TLV431BQDBZT

Overview

The TLV431BQDBZT is a low-voltage adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a supply voltage range of 2.5 V to 7 V and provides an adjustable output voltage from 1.24 V to 6 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 15 mA with a minimum operating current of 80 µA. The component is housed in a SOT-23-3 surface-mount package and is rated for operation between -40°C and +125°C.

Feature Summary

• Provides high-precision voltage regulation with 0.5% initial accuracy for stable reference applications.
• Operates at low voltages, enabling compatibility with battery-powered and portable electronic systems.
• Features wide thermal stability across an extended industrial temperature range.

Applications

• Precision voltage references in power management circuits
• Voltage monitoring and threshold detection systems
• Battery-operated equipment requiring stable low-voltage references

Procurement Notes

Verify the specific suffix 'Q' indicates automotive qualification requirements before procurement. Confirm that the SOT-23-3 package dimensions align with the target PCB footprint. Ensure the design accounts for the 15 mA maximum cathode current limit during peak load conditions. Cross-reference the datasheet revision to confirm parameter consistency.

Selection Notes

Select this component when a low-voltage, high-accuracy reference is required in a compact surface-mount package. It is suitable for designs where standard 2.5 V references are insufficient due to headroom constraints. Consider the 0.5% tolerance if tighter regulation than the standard TLV431 is needed. Evaluate the 138 ppm/°C temperature coefficient against environmental thermal variations.

Part Context

This part belongs to the TLV431 family of adjustable shunt regulators, designed specifically for low-voltage applications. Unlike the higher-voltage TL431 series, the TLV431 operates down to 2.5 V, making it ideal for modern low-power electronics. The 'B' designation typically denotes improved accuracy specifications compared to baseline models.

Replacement Considerations

TLV431BQDBZR is a compatible alternative within the same series offering identical electrical characteristics and pinout configuration.