TLV431BCLPRE3

Overview

The TLV431BCLPRE3 is a low-voltage adjustable precision shunt regulator manufactured by Texas Instruments. It operates within an output voltage range of 1.24 V to 6 V and features an initial accuracy of 0.5%. The device supports a maximum cathode current of 15 mA and has a maximum reference input voltage of 1.258 V. It functions reliably across a temperature range of -40°C to +85°C with a temperature coefficient of 138 ppm/°C. The component is housed in a TO-92-3 package, suitable for through-hole mounting.

Feature Summary

• Provides high-precision voltage regulation with 0.5% initial accuracy
• Supports low-voltage operation with an adjustable output range from 1.24 V to 6 V
• Designed for space-constrained applications using a compact TO-92-3 through-hole package

Applications

• Battery-operated equipment requiring precise voltage monitoring
• Switch-mode power supplies needing accurate feedback references
• Data acquisition systems utilizing low-voltage analog signals

Procurement Notes

Verify the specific suffix 'PRE3' confirms the lead-free and RoHS-compliant status as per Texas Instruments documentation. Ensure the procurement channel sources genuine components to guarantee the specified 0.5% accuracy and thermal stability. Cross-reference the manufacturer part number against official distributors to avoid counterfeit variants that may lack the required electrical specifications.

Selection Notes

Select this component when a low-voltage adjustable reference is required with tight tolerance constraints. The 0.5% accuracy makes it suitable for applications where standard 1% or 2% references are insufficient. Consider the TO-92-3 package if through-hole assembly is mandated by the PCB design. Evaluate the 15 mA sink current capability against the circuit's load requirements to ensure adequate drive strength.

Part Context

This device belongs to the TLV431 family of low-voltage adjustable precision shunt regulators. It serves as a cost-effective alternative to traditional Zener diodes, offering superior temperature stability and lower dynamic impedance. The family is widely used in power management circuits where reliable voltage referencing is critical for system performance and efficiency.

Replacement Considerations

Compatible substitutes include the TLV431ACLPRE3 (1% accuracy) and TLV431BCLPRE3 (0.5% accuracy). Verify pinout compatibility and package dimensions before substitution. Ensure the replacement meets the same voltage and current specifications.