LM336LPE3-2-5

Overview

The LM336LPE3-2-5 is a precision two-terminal shunt voltage reference integrated circuit manufactured by Texas Instruments. It provides a stable nominal output voltage of 2.49 V with an initial accuracy of ±1%. The device operates within a temperature range of -40°C to +85°C and features a low temperature coefficient of 20 ppm/°C. Designed for through-hole mounting, it utilizes a TO-226-3 (TO-92) package with three pins. The maximum shunt current is rated at 10 mA, making it suitable for applications requiring a reliable, low-cost reference source in compact form factors.

Feature Summary

• Provides a fixed 2.49 V reference output via a two-terminal shunt regulator topology
• Ensures high precision with ±1% initial accuracy and low temperature drift
• Operates reliably across an extended industrial temperature range from -40°C to +85°C
• Utilizes a standard TO-226-3 through-hole package for easy integration

Applications

• Precision analog-to-digital converter (ADC) reference sources
• Digital-to-analog converter (DAC) voltage references
• Battery-powered measurement instrumentation
• Over-voltage protection circuits

Procurement Notes

Verify the specific suffix 'LPE3' against the manufacturer's current product lifecycle status, as this variant may be obsolete or discontinued. Confirm that the TO-226-3 package dimensions match your PCB footprint requirements. Ensure the 2.49 V output level meets your system design specifications before ordering, as alternative versions with different voltage outputs are available within the same family.

Selection Notes

Select this component when a fixed 2.5 V class reference is required with tight initial accuracy tolerances. The TO-226-3 package is appropriate for prototyping or low-volume production where surface-mount space constraints are not critical. Consider the 20 ppm/°C temperature coefficient for environments with significant thermal fluctuations. Verify that the 10 mA maximum current capability aligns with the load requirements of your reference circuit.

Part Context

This part belongs to the LM336 series of precision shunt voltage references from Texas Instruments. The series includes variants with different voltage outputs and accuracy grades, such as the LM336B-2.5. The 'P' in the part number typically denotes the plastic TO-226-3 package, while 'E3' indicates lead-free composition compliant with RoHS standards. This family is widely used in general-purpose electronic designs requiring stable voltage references.

Replacement Considerations

Publicly confirmed substitutes include the LM336Z-2.5/NOPB and LM336B-2.5/NOPB. Verify pinout compatibility and package dimensions when substituting. Note that the LM336LPE3-2-5 is listed as obsolete; therefore, newer revisions or equivalent parts from other manufacturers should be evaluated for long-term supply stability.