NCP431AVLPG

Overview

The NCP431AVLPG is a programmable precision shunt reference from onsemi, operating within a -40°C to +125°C temperature range. It features a typical voltage tolerance of ±1% and a reference input voltage deviation of up to 15 mV over the full temperature range. The device supports a cathode-to-anode voltage up to 36 V and sinks current between 40 µA and 100 mA. It exhibits a typical dynamic impedance of 0.22 Ω and an equivalent full-range temperature coefficient of 50 ppm/°C.

Feature Summary

• Programmable output voltage adjustable from the internal reference level up to 36 V using external resistors
• Low minimum operating current enabling extremely low no-load consumption in secondary regulators
• Temperature compensated for stable operation across the full rated industrial and automotive temperature range

Applications

• Voltage adapters
• Switching power supplies
• Precision voltage references
• Chargers
• Instrumentation

Procurement Notes

Verify the specific suffix AVLPG confirms the TO-92 package with straight leads and bag packaging. Confirm the AV designation indicates the 1% tolerance grade and extended -40°C to +125°C operating range. Ensure compatibility with required lead styles as package variations exist within the series.

Selection Notes

Select this component when a wide operating temperature range and robust through-hole packaging are required. The 1% tolerance suits applications needing tighter initial accuracy than standard grades. Verify that the TO-92 form factor fits the mechanical constraints compared to surface-mount alternatives like SOT-23 or SOIC-8.

Part Context

This part belongs to the NCP431/NCP432 series of three-terminal programmable shunt regulator diodes. These devices function as low temperature coefficient zener diodes, serving as excellent replacements for traditional zeners in digital voltmeters, power supplies, and op-amp circuitry. The series provides a convenient 2.5 V reference compatible with 5.0 V logic supplies.

Replacement Considerations

NCP431AILPRAG

FAQ

What is the pin configuration for the NCP431AVLPG?

Pin 1 is the Reference, Pin 2 is the Anode, and Pin 3 is the Cathode.

Does the NCP431AVLPG support negative voltage referencing?

Yes, because it operates as a shunt regulator, it can be used as either a positive or negative voltage reference.