LM4040CIM3-5.0+T

Overview

The LM4040CIM3-5.0+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 0.5%. The device features a maximum temperature coefficient of 100ppm/°C and operates within a temperature range of -40°C to +85°C. It utilizes a subminiature 3-pin SC70 surface-mount package, measuring 1.8mm x 1.8mm. The component supports a shunt current capability ranging from 60μA to 15mA.

Feature Summary

• Laser-trimmed resistors ensure precise initial accuracy across multiple grades.
• Operates stably without requiring external stabilizing capacitors for any capacitive load.
• Utilizes bandgap principle to maintain stable voltage over wide operating currents.

Applications

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

Procurement Notes

Verify the specific suffix '+T' indicates tape and reel packaging and '+' denotes lead-free/RoHS compliance per official documentation. Confirm that the 'I' grade corresponds to the industrial temperature range (-40°C to +85°C) rather than extended ranges. Ensure the ordering part number matches the required accuracy and package type exactly as listed in the manufacturer's ordering information table.

Selection Notes

Select this component when space-critical applications require a compact 3-pin SC70 package. Choose based on the required initial accuracy (0.5% for 'C' grade) and the specific operating temperature range (-40°C to +85°C). Consider the 100ppm/°C temperature coefficient for thermal stability requirements. Verify that the circuit design accommodates the 60μA minimum operating current and 15mA maximum shunt current limits.

Part Context

The LM4040 series consists of improved precision micropower shunt voltage references available in various fixed reverse-breakdown voltages including 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. The family offers four grades of initial accuracy ranging from 0.1% to 1.0%. These devices are designed for applications where small size and low power consumption are critical constraints.

Replacement Considerations

LM4040BIM3-5.0+T: Offers higher initial accuracy (0.2%) with identical voltage and package.

FAQ

Does the LM4040CIM3-5.0+T require an external capacitor for stability?

No, the device does not require an external stabilizing capacitor and ensures stability with any capacitive load.

What is the pin configuration for the SC70 package?

Pin 1 is the positive terminal, Pin 2 is the negative terminal, and Pin 3 is No Connection (N.C.). Pin 3 must be left unconnected or connected to Pin 2.