TL432QDBVTG4

Overview

The TL432QDBVTG4 is an automotive-grade adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a cathode voltage range of 2.5 V to 36 V and provides an internal reference voltage of 1.24 V. The device features an initial accuracy of 0.5% and a temperature coefficient of 92 PPM/°C. It supports a maximum sink current of 100 mA and functions reliably across an operating temperature range of -40°C to +125°C. Packaged in a compact SOT-23-5 surface-mount case, it meets AEC-Q100 standards for automotive applications.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards
• Adjustable output voltage capability from 2.5 V to 36 V
• High precision with 0.5% initial accuracy tolerance
• Wide thermal stability suitable for harsh environments

Applications

• Automotive power supply regulation circuits
• Battery management systems in vehicles
• Precision voltage references for automotive sensors
• Switching power supply feedback loops

Procurement Notes

Verify the complete part number including suffixes such as TG4 to ensure correct package and tape-and-reel specifications. Confirm that the component meets specific automotive quality requirements if used in safety-critical designs. Check for end-of-life status or obsolescence notices before finalizing procurement plans. Ensure compatibility with existing PCB footprints for the SOT-23-5 package.

Selection Notes

Select this component when automotive reliability and high precision are required in space-constrained designs. The SOT-23-5 package offers a small footprint compared to larger alternatives. Consider the 100 mA sink current limit when designing load circuits. The wide operating temperature range makes it suitable for under-hood applications where standard commercial parts may fail.

Part Context

This device belongs to the TL432 family of adjustable precision shunt regulators. It serves as a low-cost alternative to Zener diodes while offering superior performance and adjustability. The Q-series designation indicates automotive-grade manufacturing and testing. It complements other Texas Instruments PMIC solutions for comprehensive power management strategies.

Replacement Considerations

Check for direct equivalents within the TL432 family or cross-reference with other automotive-grade shunt regulators. Verify pinout compatibility and electrical parameter overlaps before substitution. Ensure any replacement also holds necessary automotive certifications.