TL431BCPG

Overview

The TL431BCPG is a three-terminal programmable shunt regulator diode manufactured by onsemi. It operates as a low temperature coefficient zener, providing a reference voltage adjustable from Vref to 36 V using two external resistors. The device features a typical voltage reference tolerance of ±0.4% at 25 °C and a dynamic output impedance of 0.22 Ω. It supports a sink current range of 1.0 mA to 100 mA with a typical full-range temperature coefficient of 50 ppm/°C. The component is housed in an 8-pin PDIP package (Case 626) and is rated for operation within an ambient temperature range of 0 °C to +70 °C.

Feature Summary

• Programmable precision reference functionality allowing output voltage adjustment via external resistors
• Temperature compensated design ensuring stable performance across the rated operating temperature range
• Low dynamic output impedance characteristic suitable for high-precision regulation applications

Applications

• Digital voltmeters
• Power supplies
• Op amp circuitry

Procurement Notes

Verify the specific suffix 'CPG' corresponds to the PDIP-8 package and commercial temperature grade (0°C to +70°C). Confirm that the B series designation indicates the tighter ±0.4% voltage reference tolerance compared to standard variants. Ensure the ordering information matches the required shipping configuration for this specific part number.

Selection Notes

Select the TL431BCPG when a precise voltage reference with tight initial tolerance is required for commercial temperature environments. The B series offers superior accuracy compared to the C series. Consider the PDIP-8 package for through-hole mounting requirements where higher power dissipation capabilities relative to smaller packages are beneficial.

Part Context

This component belongs to the TL431A, B Series family of programmable precision references. These monolithic ICs serve as direct replacements for traditional Zener diodes in various analog circuits. The family includes variants with different temperature grades and tolerances, such as the A series for wider temperature ranges and the NCV prefix for automotive applications.

Replacement Considerations

TL431ACPG