LM4040BECT-3.0

Overview

The LM4040BECT-3.0 is a micropower shunt voltage reference manufactured by STMicroelectronics, providing a fixed output of 3.0 V with an initial accuracy of ±0.2%. 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 supports a reverse breakdown current from 10 µA to 15 mA and is housed in a compact SOT323-5L surface-mount package.

Feature Summary

• Ultra-low operating current of 10 µA at 25 °C for power-constrained designs
• High precision with ±0.2% initial accuracy at 25 °C
• Very low low-frequency noise typical value of 10 µVp-p
• 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 voltage, tolerance, and package selection. Confirm that the SOT323-5L footprint matches your PCB design requirements. Check for any recent document revisions or environmental compliance updates such as RoHS status before finalizing procurement orders.

Selection Notes

Select this component for applications requiring high precision and low power consumption in space-limited environments. The SOT323-5L package is suitable where board area is critical. Ensure the design accounts for the minimum operating current of 10 µA and the maximum operating current of 15 mA to maintain stable regulation across the specified temperature range.

Part Context

This part belongs to the LM4040 family of precision micropower shunt voltage references. The family offers various fixed output voltages including 2.048 V, 2.5 V, 3.0 V, 4.096 V, and 5.0 V. Different suffixes indicate varying initial accuracies (0.1%, 0.2%, 0.5%, 1%) and packages (SOT23-3L, SOT323-5L).

Replacement Considerations

LM4040BELT-3.0

FAQ

What is the maximum temperature coefficient for the LM4040BECT-3.0?

The maximum average temperature coefficient is 70 ppm/°C over the operating current range of 10 µA to 15 mA.

Is the LM4040BECT-3.0 stable with capacitive loads?

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