TL431BCLPG

Overview

The onsemi TL431BCLPG is a programmable shunt voltage reference IC housed in an 8-pin SOIC surface-mount package. It provides an adjustable output voltage range from 2.5 V to 36 V with an initial accuracy of ±0.4%. The device operates within a temperature range of 0°C to 70°C and supports a maximum cathode current of 100 mA. Key electrical parameters include a line regulation of 53 mV, load regulation of 25 mV, and a temperature coefficient of 50 ppm/°C. It complies with RoHS standards.

Feature Summary

• Offers high precision with ±0.4% initial accuracy for stable reference applications
• Features a wide adjustable output voltage range up to 36 V
• Supports high cathode current capability of 100 mA

Applications

• Secondary regulators in switch-mode power supplies
• Precision voltage references in industrial control systems
• Over-voltage protection circuits
• Linear regulator feedback loops

Procurement Notes

Verify the specific suffix 'CLPG' against official datasheets to confirm pinout and tolerance specifications. Ensure compatibility with existing PCB footprints for the SOIC-8 package. Confirm RoHS compliance status for the specific manufacturing batch prior to integration into final assemblies.

Selection Notes

Select this component when precise voltage referencing is required in space-constrained designs utilizing surface-mount technology. The ±0.4% accuracy makes it suitable for applications demanding tighter tolerances than standard TL431 variants. Consider the 100 mA current drive capability for driving low-impedance loads or optocouplers directly.

Part Context

This part belongs to the widely adopted TL431 family of programmable shunt regulators. It serves as a cost-effective alternative to Zener diodes, offering superior stability and lower temperature coefficients. The SOIC-8 package allows for automated assembly, making it ideal for high-volume consumer and industrial electronics manufacturing.

Replacement Considerations

Compatible substitutes include other TL431 variants with similar accuracy ratings and package types. Verify that replacement parts maintain the same 100 mA current rating and 36 V maximum input voltage to ensure circuit functionality without modification.