TL431CDBZTG4

Overview

The TL431CDBZTG4 is an adjustable shunt voltage reference from Texas Instruments, designed for automotive applications. It operates within a cathode voltage range of 2.495V to 36V and supports a maximum output current of 100mA. The device features an initial accuracy of 2% and a maximum temperature coefficient of 92ppm/°C. It is housed in a surface-mount SOT-23 package with three pins and supplied in tape and reel format. The component is rated for an operating temperature range from 0°C to 70°C, with a maximum input voltage of 37V.

Feature Summary

• Adjustable shunt regulator topology providing precise voltage control
• Automotive qualification ensuring reliability in vehicle environments
• Compact SOT-23 surface-mount packaging for space-constrained designs

Applications

• Automotive power supply regulation circuits
• Precision voltage reference sources in automotive electronics
• Feedback loop compensation in switching regulators

Procurement Notes

Verify the specific suffix 'G4' confirms RoHS compliance and lead-free status as per Texas Instruments documentation. Ensure the automotive grade designation aligns with your system's environmental requirements. Confirm the SOT-23-3 package dimensions match your PCB footprint constraints. Check for any recent Product Change Notifications that may affect assembly or sourcing parameters.

Selection Notes

Select this part when automotive-grade reliability is required alongside adjustable voltage referencing. The 2% initial accuracy suits applications tolerating moderate tolerance levels. Consider the 0°C to 70°C operating range against your thermal environment. Compare against higher precision variants if tighter tolerance is necessary. Evaluate the SOT-23 form factor for compatibility with existing surface-mount assembly processes.

Part Context

This component belongs to the TL431 family of adjustable shunt regulators manufactured by Texas Instruments. The TL431 series is widely recognized for its versatility in power management applications. The 'C' designation typically indicates commercial temperature range performance, while 'Q' often denotes automotive qualification. This specific variant integrates automotive reliability standards into the standard adjustable reference architecture.

Replacement Considerations

Direct substitutes include other TL431 variants with compatible pinouts and electrical characteristics. Verify that alternative parts meet the same automotive qualification standards and temperature range requirements. Ensure the replacement maintains the 2.495V to 36V output voltage range and 100mA current capability.