TL432BQDBZRG4

Overview

The TL432BQDBZRG4 is an adjustable precision shunt regulator from Texas Instruments, housed in a SOT-23 (DBZ) surface-mount package with three pins. It operates within a supply voltage range up to 36 V and supports a maximum shunt current of 100 mA. The device maintains an initial accuracy of 0.5% and features a temperature coefficient of 92 PPM/°C. It functions reliably across an extended industrial temperature range from -40°C to +125°C. Minimum operating current is specified at 600 µA. This component belongs to the TL431/TL432 series and is supplied in reel packaging.

Feature Summary

• Provides programmable reference voltage functionality via external resistor network
• Designed for high precision applications requiring tight initial accuracy tolerance
• Capable of operation in harsh environments with extended temperature rating

Applications

• Precision voltage regulation circuits
• Programmable power supplies
• Battery-operated equipment requiring stable reference voltages

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as indicated in official documentation. Check for obsolescence notices, as this specific suffix variant may be discontinued. Ensure ordering specifications match required packaging formats such as cut tape or reels. Validate pinout orientation against schematic requirements prior to procurement.

Selection Notes

Select this component when precise shunt regulation is required in compact designs. The SOT-23 package suits space-constrained PCB layouts. Consider the 0.5% initial accuracy for critical reference applications. Evaluate thermal performance within the -40°C to +125°C operational window. Verify that the 100 mA maximum current capability meets load requirements.

Part Context

This part belongs to the TL432 family of programmable references, which are widely used in industrial and consumer electronics. The TL432 offers improved performance over standard zener diodes. It serves as a drop-in replacement for many fixed voltage references. The DBZ package provides efficient thermal dissipation for small form factors.

Replacement Considerations

The TL432BQDBZR is listed as a recommended substitute by the manufacturer. Verify pinout compatibility, specifically noting reverse pinout variations in some TL432 variants. Ensure electrical parameters match original design requirements before substitution.