TL431CLPRMG

Overview

The onsemi TL431CLPRMG is a three-terminal programmable shunt regulator diode in the TL431 series. It operates as a low temperature coefficient Zener, programmable from Vref to 36 V using two external resistors. The device features a reference voltage tolerance of ±2.2% at 25 °C and supports a cathode current range of 1.0 mA to 100 mA with a typical dynamic impedance of 0.22 Ω. It includes latch-up protection exceeding ±100 mA per JEDEC JESD78 standards.

Feature Summary

• Programmable output voltage capability up to 36 V via external resistor divider
• Temperature compensated operation across full rated ambient temperature ranges
• Integrated latch-up protection compliant with JEDEC JESD78 standards
• Low dynamic output impedance for stable regulation performance

Applications

• Digital voltmeters requiring precise reference voltages
• Power supply feedback control circuits
• Op amp circuitry utilizing stable reference sources
• Constant current source implementations

Procurement Notes

Verify the specific suffix CLPRMG against the official ordering table to confirm package type (TO-92), shipping format (Fan-Fold), and tolerance class (±2.2%). Ensure compatibility with required operating temperature ranges and check for any discontinued status notices in the latest datasheet revision before finalizing procurement specifications.

Selection Notes

Select this component when a standard 2.5 V reference is insufficient and a higher programmable voltage up to 36 V is required. The ±2.2% tolerance suits applications where tighter precision is not critical. Verify that the TO-92 package thermal dissipation characteristics meet the design's power requirements under maximum load conditions.

Part Context

This part belongs to the TL431A, B, and C series of programmable precision references manufactured by onsemi. These monolithic ICs serve as direct replacements for traditional Zener diodes in various analog and digital circuits. The family offers multiple package options including SOIC-8, PDIP-8, and TO-92 to accommodate different board space and thermal constraints.

Replacement Considerations

Compatible substitutes include other TL431 variants with matching pinouts such as TL431CDG or TL431BCPG. Ensure replacement parts maintain similar dynamic impedance and reference voltage deviation over temperature to preserve circuit stability and regulation accuracy.