LM236AH-5.0

Overview

The LM236AH-5.0/NOPB is a fixed shunt voltage reference integrated circuit manufactured by Texas Instruments. It provides a stable 5V output with an initial accuracy of ±1%. The device operates within a temperature range of -25°C to +85°C and features a maximum temperature coefficient of 52 ppm/°C. It supports a maximum output current of 10 mA and requires a minimum cathode current of 600 µA for regulation. The component is housed in a TO-46-3 metal can package, suitable for through-hole mounting.

Feature Summary

• Provides a fixed 5V reference voltage with high precision
• Utilizes a shunt regulator topology for stable operation
• Encased in a hermetic TO-46-3 metal can package

Applications

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

Procurement Notes

Verify the specific suffix 'AH' and 'NOPB' to confirm the ±1% accuracy grade and lead-free status. Ensure the procurement documentation explicitly states the TO-46-3 metal can package type, as plastic variants exist for this family. Confirm the operating temperature range matches the -25°C to +85°C specification required for the application environment.

Selection Notes

Select this component when a fixed 5V reference with tight initial accuracy is required. The TO-46-3 package offers environmental protection suitable for harsh conditions. Consider the 600 µA minimum cathode current requirement when designing the biasing network to ensure proper regulation under all load conditions.

Part Context

This part belongs to the LM236 series of integrated reference circuits from Texas Instruments. It serves as a direct replacement for older discrete Zener diodes, offering superior stability and lower noise. The series includes various voltage options and accuracy grades, with the AH variant providing the highest precision among standard commercial offerings.

Replacement Considerations

Direct substitutes include LM236AH-2.5/NOPB or LM236AH-10/NOPB for different voltage requirements. For non-metal can packages, verify if LM236AJ-5.0/SO meets the thermal and mechanical constraints.