LM336M-2.5

Overview

The LM336M-2.5/NOPB is a two-terminal shunt voltage reference diode manufactured by Texas Instruments, originally from the National Semiconductor LM336 series. It provides a fixed nominal output voltage of 2.49 V with an initial accuracy of ±4%. The device operates in a surface-mount SOIC-8 package and supports a maximum output current of 10 mA. It functions within a temperature range of 0°C to 70°C, featuring a typical temperature coefficient of 20 ppm/°C. The component utilizes a shunt topology for precision regulation.

Feature Summary

• Provides a stable 2.49 V reference via a two-terminal shunt configuration
• Delivers ±4% initial accuracy for precise circuit calibration
• Operates reliably across a standard commercial temperature range

Applications

• Precision analog-to-digital converter (ADC) reference sources
• Digital-to-analog converter (DAC) voltage references
• Battery-powered instrumentation circuits requiring stable biasing

Procurement Notes

Verify the manufacturer designation carefully, as the part originates from National Semiconductor but is now produced under Texas Instruments. Confirm the presence of the NOPB suffix to ensure compliance with lead-free and RoHS standards. Cross-reference datasheet revisions to ensure compatibility with current design specifications and pinout definitions.

Selection Notes

Select this component when a fixed 2.5 V reference is required in a compact SOIC-8 footprint. Ensure the application current does not exceed the 10 mA limit. Consider the ±4% tolerance if higher precision is needed, or evaluate the LM336B variant for tighter accuracy specifications. Verify thermal management requirements within the 0°C to 70°C operating window.

Part Context

This device belongs to the LM336 family of integrated reference circuits, which are widely used for their stability and low cost. The LM336M-2.5 specifically denotes the industrial/commercial grade version in an SOIC package. It serves as a direct replacement for older discrete Zener diode references, offering superior temperature stability and lower dynamic impedance.

Replacement Considerations

LM336M-2.5/NOPB