TL431BQLPRE3

Overview

The TL431BQLPRE3 is an adjustable precision shunt regulator manufactured by Texas Instruments, housed in a TO-92-3 through-hole package. It provides an adjustable output voltage ranging from 2.495 V to 36 V with an initial accuracy of 0.5%. The device features a maximum temperature coefficient of 92 PPM/°C and supports a maximum input voltage of 36 V. It operates within a temperature range of -40°C to +125°C, handling a maximum shunt current of 100 mA and a minimum cathode current of 600 µA.

Feature Summary

• Provides high-precision voltage regulation with 0.5% initial accuracy for stable reference applications.
• Supports wide operating temperature ranges up to +125°C suitable for demanding environments.
• Features adjustable output capability allowing flexible design integration across various circuits.

Applications

• Precision voltage references in power supply designs
• On-line monitoring systems requiring accurate threshold detection
• Programmable linear regulators utilizing shunt topology

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status indicated in public records. Confirm RoHS compliance details via the official datasheet before integration. Ensure packaging specifications match production requirements as availability may vary. Cross-reference pinouts and thermal characteristics against final assembly constraints to prevent compatibility issues during implementation.

Selection Notes

Select this component when precise voltage referencing is required in through-hole designs. The 0.5% accuracy suits applications needing tight tolerance control. Consider the TO-92-3 package for manual assembly or legacy board layouts. Evaluate the -40°C to +125°C range against environmental conditions. Compare against other TL431 variants if different accuracy grades or surface-mount packages are preferred for space-constrained projects.

Part Context

This part belongs to the TL431B series of adjustable shunt regulators from Texas Instruments. It serves as a key component in power management integrated circuits, specifically under the PMIC category. The device functions as a programmable zener diode, offering superior performance over standard fixed voltage references. Its design allows for easy implementation in feedback loops for voltage regulation tasks.

Replacement Considerations

Public records indicate the TL431BILPR as a manufacturer-recommended alternative. Verify electrical parameters and package compatibility before substitution. Check for any changes in accuracy or temperature coefficients between the original and substitute parts to ensure circuit performance remains within specified limits.