LM431CCZ

Voltage Reference Overview

The LM431CCZ is a discontinued three-terminal adjustable shunt regulator manufactured by onsemi. It provides programmable output voltage ranging from approximately 2.5 V to 36 V using two external resistors. The device features a typical dynamic output impedance of 0.2 Ω and operates within a cathode current range of 1.0 mA to 100 mA. It offers an initial accuracy of 0.5% with a temperature coefficient of 50 ppm/°C. The component is housed in a TO-92 package and supports through-hole mounting, functioning over an operating temperature range of -25 °C to +85 °C.

Voltage Reference Feature Summary

• Programmable output voltage capability up to 36 V
• Low dynamic output impedance for stable regulation
• Temperature compensated operation across the full rated range

Voltage Reference Applications

• Shunt regulator circuits
• Replacement for Zener diodes
• Output control for three-terminal fixed regulators

Voltage Reference Procurement Notes

Verify availability status as this specific part number is listed as discontinued in official documentation. Confirm compatibility with existing designs before sourcing alternatives. Check for updated ordering information or replacement devices directly from the manufacturer. Ensure that any substitute components meet the required electrical specifications and package dimensions for your application.

Voltage Reference Selection Notes

Select this component when a low-cost, adjustable precision shunt reference is required in a TO-92 package. Consider the 0.5% tolerance and 50 ppm/°C temperature coefficient for applications needing moderate precision. Evaluate the 1 mA minimum cathode current requirement for regulation stability. Verify that the 37 V maximum cathode voltage rating suits the circuit design constraints.

Voltage Reference Part Context

This device belongs to the LM431 family of programmable shunt regulators. It serves as a versatile alternative to standard Zener diodes, offering improved performance characteristics such as lower dynamic impedance and adjustable output voltage. The LM431 series is widely used in power management applications requiring precise voltage referencing and regulation.

Voltage Reference Replacement Considerations

Official documentation lists the LM431CCZ as discontinued. Potential substitutes include other LM431 variants or equivalent shunt regulators from different manufacturers. Verify pinout compatibility and electrical parameter alignment when selecting a replacement.