TL431BCPWR

Overview

The TL431BCPWR is an adjustable precision shunt regulator from Texas Instruments, designed for voltage reference applications. It operates within a reference voltage range of 2.495V to 36V and supports a maximum output current of 100mA with a minimum cathode current of 600µA. The device features an initial accuracy of 0.5% and a temperature coefficient of 92ppm/°C. It is housed in an 8-pin TSSOP package, rated for surface mount installation, and functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

• Provides adjustable voltage reference functionality with high precision suitable for feedback control loops
• Operates as a shunt regulator capable of sinking significant current for stable circuit regulation
• Engineered for robust performance across wide industrial temperature environments

Applications

• Precision voltage references in power supply circuits
• Feedback loop compensation in switching regulators
• Comparator threshold setting in analog signal processing

Procurement Notes

Verify the specific suffix 'WR' against the manufacturer's latest documentation to confirm tape-and-reel packaging specifications and moisture sensitivity level requirements. Ensure that the procurement channel sources genuine Texas Instruments components to guarantee the stated 0.5% accuracy and thermal stability parameters are maintained throughout the operational lifecycle.

Selection Notes

Select this component when a surface-mount solution is required for high-precision voltage referencing in compact designs. The TSSOP-8 package facilitates automated assembly processes while maintaining electrical performance comparable to through-hole variants. Consider the extended temperature rating for applications operating in harsh environmental conditions where standard commercial grade devices may fail.

Part Context

This part belongs to the TL431B series, representing a higher precision tier within the broader TL431 family of programmable shunt regulators. While sharing core functional architecture with other variants, it distinguishes itself through tighter tolerance specifications and specialized packaging options tailored for modern surface-mount technology manufacturing lines.

Replacement Considerations

• TL431ACD
• TL431BCPKG3

FAQ

What is the minimum cathode current required for proper operation?

The device requires a minimum cathode current of 600µA to maintain regulation within specified accuracy limits.

Is this component suitable for automotive applications?

The provided documentation does not specify AEC-Q100 qualification or automotive-grade status for the TL431BCPWR variant.