TLV431BLPRMG

Overview

The TLV431BLPRMG is a discontinued low voltage precision adjustable shunt regulator from the TLV431B series by onsemi. It features a programmable output voltage range of 1.24 V to 16 V and a reference accuracy of ±0.5% at 25 °C. The device operates with a cathode current range of 100 µA to 20 mA and exhibits a dynamic impedance of 0.25 Ω. It is housed in a TO-92-3 package with bent leads, designed for through-hole mounting. The component supports an operating ambient temperature range of -40 °C to 85 °C.

Feature Summary

• Precision adjustable shunt regulation with sharp low current turn-on characteristics
• High reference accuracy of ±0.5% tolerance within the B series specification
• Low dynamic output impedance ensuring stable performance across operating currents
• Pb-Free and Halide-Free construction compliant with environmental standards

Applications

• Error amplifier for isolated low output voltage switching power supplies
• Adjustable voltage or current linear and switching power supplies
• Voltage monitoring circuits requiring precise reference thresholds
• Current source and sink applications in analog and digital circuits
• Replacement for low voltage zener diodes in precision reference designs

Procurement Notes

This part number is officially listed as discontinued by onsemi and is not recommended for new designs. Verification of availability should focus on surplus distributors or existing stock rather than direct manufacturer allocation. Engineers must confirm end-of-life status and lead times carefully when sourcing replacements or managing legacy inventory.

Selection Notes

Select this component only for legacy system maintenance or repair where pinout and electrical characteristics match existing designs. For new projects, consider alternative available shunt regulators from the same family or competitors that offer current production status. Ensure the TO-92-3 package style and bent lead configuration align with the target PCB footprint requirements.

Part Context

The TLV431BLPRMG belongs to the broader TLV431 family of low voltage precision adjustable shunt regulators. This series includes A, B, and C variants distinguished primarily by their reference voltage accuracy tolerances. The B series specifically targets applications requiring tighter initial accuracy compared to the standard A series, while maintaining compatibility with common optocoupler feedback topologies.

Replacement Considerations

TLV431ALPRMG