LM236DR-2-5

Overview

The LM236DR-2-5 is a shunt voltage reference integrated circuit manufactured by Texas Instruments. It provides a fixed output voltage of 2.49 V with an initial accuracy of ±2%. The device operates within a temperature range of -25°C to 85°C and features a typical temperature coefficient of 20 ppm/°C, with a maximum of 52 ppm/°C. It draws a typical quiescent current of 400 µA and supports a maximum output current of 10 mA. The component is housed in an 8-SOIC package.

Feature Summary

• Provides a stable 2.49 V fixed reference voltage with high initial accuracy.
• Operates as a shunt regulator suitable for low-power applications.
• Features low quiescent current consumption for energy efficiency.

Applications

• Precision measurement systems requiring stable voltage references
• Portable battery-powered equipment due to low current draw
• Data acquisition systems needing accurate analog references

Procurement Notes

Verify the specific suffix (e.g., DR) matches the required package type and tape/reel configuration. Confirm that the ±2% accuracy class meets the design requirements, as other variants may offer different tolerances. Ensure the operating temperature range aligns with the environmental conditions of the target application.

Selection Notes

Select this component when a fixed 2.49 V reference is required with tight initial accuracy. Consider the 8-SOIC package constraints for PCB layout. Evaluate if the shunt topology suits the load current requirements, noting the 10 mA maximum limit. Compare against series alternatives like LM336 if higher temperature ranges or different accuracies are needed.

Part Context

This part belongs to the LM236 family of integrated reference circuits from Texas Instruments. It is functionally similar to the LM136 and LM336 series but offers specific performance characteristics tailored for general-purpose voltage reference applications. The 'DR' suffix indicates the surface-mount SOIC packaging variant.

Replacement Considerations

LM236DRG4-2-5: Pin-compatible replacement with RoHS compliance updates.

FAQ

What is the minimum cathode current required for regulation?

The datasheet specifies a minimum zener current (Iz) for regulation, typically in the microampere range, ensuring stable operation below the maximum 10 mA limit.

Does the LM236DR-2-5 support adjustable output voltages?

No, this specific model provides a fixed output voltage of 2.49 V. Adjustable versions exist within the broader LM236 family but require different part numbers.