LM4040CELT-5.0

Overview

The LM4040CELT-5.0 is a precision micropower shunt voltage reference manufactured by STMicroelectronics, providing a fixed output voltage of 5.0 V with an initial accuracy of +/- 0.5%. It operates within an industrial temperature range of -40 to +125 °C and features a maximum temperature coefficient of 70 ppm/°C. The device requires a minimum operating current of 10 µA at 25 °C and supports a reverse breakdown current up to 20 mA. It is housed in a compact SOT23-3L package.

Feature Summary

• Provides stable reference voltage over industrial temperature ranges
• Ultra-low operating current suitable for power-constrained designs
• High precision with specified initial accuracy tolerances
• Capable of driving capacitive loads without instability

Applications

• Portable battery-operated equipment
• Data acquisition systems
• Instrumentation circuits

Procurement Notes

Verify the specific suffix 'ELT' corresponds to the SOT23-3L tape-and-reel packaging configuration as defined in the official ordering information table. Confirm that the 'C' designation aligns with the required 0.5% initial accuracy tolerance for your application specifications before finalizing procurement orders.

Selection Notes

Select this component when a 5.0 V reference with 0.5% accuracy is required in space-constrained environments utilizing the SOT23-3L footprint. Ensure the design accommodates the minimum 10 µA operating current and maximum 20 mA reverse current limits. Consider the 70 ppm/°C temperature coefficient for thermal stability requirements across the -40 to +125 °C operating range.

Part Context

This part belongs to the LM4040 family of precision micropower shunt voltage references from STMicroelectronics. The family offers multiple fixed voltage options including 2.048 V, 2.5 V, 3.0 V, 4.096 V, and 5.0 V. Variants are available in both SOT23-3L and SOT323-5L packages with varying accuracy grades ranging from 0.1% to 1%.

Replacement Considerations

LM4040BELT-5.0 (0.2% accuracy), LM4040AELT-5.0 (0.1% accuracy), LM4040DELT-5.0 (1.0% accuracy).

FAQ

What is the minimum operating current required for regulation?

The minimum operating current is 10 µA at 25 °C.

Is the device stable with capacitive loads?

Yes, the LM4040 is designed to be stable when used with capacitive loads.