SPX431CM5-L/TR

Overview

The SPX431CM5-L/TR is a two-terminal voltage reference IC manufactured by Sipex, housed in a PDSO5 package. It provides a nominal output voltage of 2.495V with a tolerance range between 2.47V and 2.52V. The device functions as an open-loop error amplifier with a temperature-compensated bandgap reference. It supports adjustable output voltages from 2.495V to 20V using two external resistors. The component operates within a maximum junction temperature of 105°C and features a wide operating current range.

Feature Summary

• Provides a precise, temperature-compensated bandgap reference voltage for stable circuit operation.
• Functions as an open-loop error amplifier suitable for parallel regulation applications.
• Allows flexible output voltage adjustment via external resistor networks.

Applications

• Precision voltage reference sources in analog circuits
• Parallel regulator configurations for power supply management
• Open-loop error amplifier stages in control systems

Procurement Notes

Verify the specific manufacturer source, as Sipex assets have been acquired by other entities such as Exar or Rochester Electronics. Confirm that the datasheet corresponds to the exact part number suffix and package type. Ensure compliance with RoHS directives if required, noting that some historical records indicate non-compliance for certain variants. Validate the operating temperature range against your specific environmental requirements before finalizing procurement.

Selection Notes

Select this component when a stable, low-cost voltage reference is needed for parallel regulation or error amplification. The PDSO5 package offers compact integration for space-constrained designs. Consider the wide operating current range and thermal stability when designing circuits that require consistent performance across varying load conditions and temperature fluctuations.

Part Context

This component belongs to the SPX431 series of two-terminal voltage references. Similar parts include the SPX431LM/TR, which shares functional characteristics but may differ in packaging or specific electrical tolerances. The series is designed for applications requiring reliable bandgap reference performance in linear regulator and monitoring circuits.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative voltage references based on pinout, voltage tolerance, and package dimensions before substitution.