LX6431ACLP

Overview

The LX6431ACLP is a precision adjustable three-terminal shunt voltage regulator manufactured by Microsemi Corporation. It serves as a pin-to-pin compatible replacement for the industry-standard TL431. The device operates within a cathode voltage range of +2.5V to +36V and offers a typical initial accuracy of ±1%. It features an output current capability of up to 100 mA and a minimum cathode current of 1 mA. The component is housed in a TO-92-3 plastic package and is designed for surface mount or through-hole applications depending on the specific variant configuration.

Feature Summary

• Pin-to-pin compatibility with standard TL431 devices for easy retrofitting
• Precision adjustable reference voltage across a wide operating range
• High thermal stability and low dynamic impedance characteristics

Applications

• Precision power supply regulation circuits
• Voltage monitoring and control systems
• Battery charging management interfaces

Procurement Notes

Verify the exact suffix requirements against your design specifications, as package variations exist within the LX6431 family. Confirm availability status directly with authorized distributors, as lead times may vary due to manufacturing cycles. Ensure that the selected variant matches the required tolerance and package type for your PCB layout constraints.

Selection Notes

Select this component when a direct drop-in replacement for TL431 is required with potentially improved performance metrics. Consider the ±1% accuracy if tighter tolerances are necessary compared to standard references. Evaluate the TO-92-3 package suitability for your assembly process and thermal management requirements before finalizing the bill of materials.

Part Context

The LX6431 series represents Microsemi's analog mixed-signal portfolio focused on precision voltage referencing. This series maintains backward compatibility with legacy designs while offering robust performance in industrial and commercial environments. The product line supports various packaging options to accommodate different form factor constraints in modern electronic equipment.

Replacement Considerations

The LX6431ACLP is explicitly documented as pin-to-pin compatible with the TL431. Designers can substitute TL431 units with this component without modifying the surrounding circuit topology, provided the electrical parameters meet the system requirements.