LM4040CECT-2.0

Overview

The LM4040CECT-2.0 is a micropower shunt voltage reference manufactured by STMicroelectronics, providing a fixed output of 2.048 V with an initial accuracy of ±0.5%. It operates within an industrial temperature range of -40 °C 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 maximum cathode current of 15 mA. It is housed in a SOT323-5L surface-mount package.

Feature Summary

• Ultra-low operating current suitable for power-restricted designs
• High precision with specified initial accuracy tolerances
• Very low low-frequency noise characteristics
• Stable operation when used with capacitive loads

Applications

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

Procurement Notes

Verify the specific ordering code against official manufacturer documentation to ensure correct package type, voltage tolerance, and temperature grade. Confirm that the SOT323-5L footprint matches your PCB design requirements. Check for environmental compliance status such as ECOPACK grades before finalizing procurement orders.

Selection Notes

Select this component for applications requiring stable reference voltages in space-constrained environments. The SOT323-5L package offers a compact solution compared to larger alternatives. Ensure the circuit design accommodates the minimum operating current requirement to maintain regulation across the full industrial temperature range.

Part Context

This part belongs to the LM4040 series of precision micropower shunt voltage references from STMicroelectronics. The series includes various output voltages and accuracy grades, utilizing either SOT23-3L or SOT323-5L packages. These devices are designed for high stability and low power consumption in industrial applications.

Replacement Considerations

LM4040BELT-2.0 (SOT23-3L package)

FAQ

What is the pin configuration for the SOT323-5L package?

Pin 1 is the Anode, Pin 2 is NC (Not Connected), Pin 3 is Cathode, Pin 4 is NC, and Pin 5 is NC. The NC pins must be left unconnected or connected to the anode.

Is the device stable with capacitive loads?

Yes, the LM4040 is stable when used with capacitive loads, making it suitable for a broad range of application conditions.