LM4040AIM3-5.0+T

Overview

The LM4040AIM3-5.0+T is a precision micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse-breakdown output voltage of 5.000V with an initial accuracy of ±0.1% and a maximum temperature coefficient of 100ppm/°C. The device operates within a wide current range from 60μA to 15mA and features low dynamic impedance for stable performance across varying loads. It is housed in a subminiature 3-pin SOT23 surface-mount package, suitable for space-constrained designs.

Feature Summary

• Ultra-small 3-pin SOT23 package designed for space-critical applications
• High precision with 0.1% initial accuracy and laser-trimmed resistors
• Stable operation without requiring external stabilizing capacitors
• Capable of tolerating any capacitive load directly

Applications

• Portable, battery-powered equipment
• Notebook computers
• Cell phones
• Industrial process controls
• Automotive systems

Procurement Notes

Verify the specific suffix '+T' indicates tape and reel packaging and '+' denotes lead-free/RoHS compliance. Confirm the 'I' designation corresponds to the -40°C to +85°C industrial temperature range rather than the extended grade. Ensure the ordering information matches the required SOT23 package variant for your PCB layout.

Selection Notes

Select this component when high accuracy (0.1%) is required in a compact footprint. The 5.000V output suits systems needing standard logic or ADC references. Verify that the operating current remains between 60μA and 15mA to maintain specified stability. Consider thermal derating if ambient temperatures approach the upper limit of the industrial range.

Part Context

This part belongs to the LM4040 family of improved precision micropower shunt voltage references. The series offers multiple fixed reverse-breakdown voltages including 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. Variants are available in both SC70 and SOT23 packages with different accuracy grades ranging from 0.1% to 1%.

Replacement Considerations

LM4040BIM3-5.0+T (0.2% accuracy)

FAQ

Does the LM4040AIM3-5.0+T require an external capacitor for stability?

No, the device does not require an external stabilizing capacitor and is guaranteed to be stable with any capacitive load.

What is the minimum operating current for this device?

The minimum operating current is typically 60μA, though it can be as low as 45μA depending on specific conditions.