SC431LI5SK-2TRT

Overview

The SC431LI5SK-2TRT is a low-voltage adjustable shunt regulator manufactured by Semtech Corporation. It provides an output voltage range from 1.24 V to 20 V with an initial accuracy of ±2%. The device operates within a cathode current range of 100 µA to 100 mA and supports a maximum supply voltage of 20 V. It is housed in a SOT-23-5 surface-mount package and functions without a shutdown feature. The component is designed for stable reference applications requiring precise voltage regulation.

Feature Summary

• Adjustable shunt regulation capability across a wide voltage range
• High initial accuracy tolerance for precision reference requirements
• Low minimum operating current enabling efficient power management
• Compact surface-mount packaging for space-constrained designs

Applications

• Precision voltage reference circuits
• Battery-powered equipment monitoring
• Portable electronic device power supplies
• Industrial control system references

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lead-free specifications prior to procurement. Check for obsolescence notifications as the product lifecycle status may affect long-term availability. Ensure storage conditions meet moisture sensitivity level requirements to maintain device integrity during handling and assembly processes.

Selection Notes

Select this component when a low-voltage adjustable shunt regulator with ±2% accuracy is required. Consider the SOT-23-5 package constraints for PCB layout. Evaluate the 100 µA minimum cathode current against circuit load requirements. Compare performance against other SC431 variants if different tolerances or packages are needed. Ensure input voltage does not exceed the 20 V maximum rating.

Part Context

This part belongs to the SC431 series of low-voltage adjustable shunt regulators produced by Semtech. It shares functional similarities with other SC431 variants but differs in package type (SOT-23-5) and specific accuracy grade. The series is widely used in analog and mixed-signal applications requiring stable voltage references.

Replacement Considerations

SC431LI5SK-1TRT offers similar functionality with ±1% accuracy instead of ±2%. SC431LCSK-2TRT provides comparable performance in a SOT-23-3 package rather than SOT-23-5. Verify pin compatibility and electrical parameters before substituting.