TLVH431IDBZT

Overview

The TLVH431IDBZT is a low-voltage adjustable precision shunt regulator manufactured by Texas Instruments. It operates within an input voltage range up to 18 V and provides an adjustable output voltage starting from a reference of 1.24 V. The device features an initial accuracy of ±1.5% and a temperature coefficient of 138 PPM/°C. It supports a maximum cathode current of 70 mA with a minimum operating current of 100 µA. The component functions reliably across a junction temperature range of -40°C to 85°C and is housed in a surface-mount SOT-23-3 package.

Feature Summary

• Adjustable output voltage capability spanning from 1.24 V to 18 V for flexible circuit design
• Precision regulation performance characterized by ±1.5% initial accuracy
• High thermal stability maintained through a low temperature coefficient specification
• Robust operational reliability ensured by extended industrial temperature range support

Applications

• Battery-powered equipment requiring precise voltage monitoring
• Portable devices utilizing low-voltage power management systems
• Industrial control circuits needing stable reference voltages
• Communication equipment demanding accurate signal conditioning

Procurement Notes

Verify the specific suffix 'IDBZT' to confirm the ±1.5% accuracy grade and SOT-23-3 packaging configuration. Ensure compatibility with the required operating temperature range of -40°C to 85°C for your application environment. Confirm RoHS compliance status and check for any recent production change notices affecting material composition or marking. Validate that the 70 mA cathode current rating meets the load requirements of your shunt regulator circuit design.

Selection Notes

Select this component when a compact surface-mount solution is required for low-voltage precision regulation. The SOT-23-3 package offers space efficiency for dense PCB layouts. Consider the ±1.5% tolerance if higher precision grades like the B variant are not necessary. Ensure the 18 V maximum input voltage aligns with your system's supply rails. Evaluate the 138 PPM/°C drift against your thermal stability requirements.

Part Context

This part belongs to the TLVH431 family of low-voltage adjustable precision shunt regulators from Texas Instruments. The family includes variants with different accuracy grades, such as the 0.5% accurate TLVH431B series. These components serve as drop-in replacements for traditional Zener diodes in many applications, offering superior temperature stability and lower dynamic impedance characteristics compared to standard discrete references.

Replacement Considerations

The TLVH431BQDBZR serves as a compatible alternative within the same family, offering improved 0.5% accuracy while maintaining similar electrical characteristics and pinout configurations.