LM4041AICT-1.2

Overview

The LM4041AICT-1.2 is a micropower shunt voltage reference manufactured by STMicroelectronics, providing a stable fixed output voltage of 1.225 V. It features an initial accuracy of ±0.1% at 25 °C and a maximum temperature coefficient of 100 ppm/°C. The device operates within an extended temperature range from -40 °C to +125 °C and consumes a typical operating current of 40 μA at 25 °C. Packaged in the SOT323-5L surface mount format, it supports a cathode current up to 50 μA and an output current of 12 mA.

Feature Summary

• Provides high precision with an initial accuracy of ±0.1% at 25 °C
• Operates with ultra-low power consumption suitable for battery-powered designs
• Maintains stability when connected to capacitive loads without external components

Applications

• Space-constrained portable electronic devices requiring compact surface-mount solutions
• Battery-operated systems prioritizing low quiescent current operation
• Precision measurement circuits requiring stable voltage references across wide temperature ranges

Procurement Notes

Verify that the specific part number suffix corresponds to the SOT323-5L package configuration rather than the SOT23-3L variant. Confirm the 'A' grade designation ensures the required ±0.1% initial accuracy specification. Ensure the procurement channel provides documentation confirming compliance with the specified RoHS standards and environmental classifications.

Selection Notes

Select this component when design constraints demand a small footprint combined with high voltage stability. The SOT323-5L package offers space efficiency compared to larger alternatives. The extended temperature rating makes it suitable for harsh environments where standard industrial grades may fail. Verify that the application circuit can accommodate the minimum operating current requirements for proper regulation.

Part Context

This component belongs to the LM4041 family of micropower shunt voltage references designed for applications where size and power consumption are critical. The family includes various accuracy grades and package options, allowing designers to balance performance with cost and board space requirements effectively.

Replacement Considerations

LM4041BIM7-1.2/NOPB (Texas Instruments)

FAQ

Does the LM4041AICT-1.2 require an external capacitor for stability?

No, the device is designed to be stable even when used with capacitive loads, eliminating the need for external stabilization capacitors.

What is the maximum temperature coefficient for this device?

The maximum temperature coefficient is 100 ppm/°C, ensuring consistent voltage reference performance across the operating temperature range.