LM4051CIX3-1.2+T

Voltage Reference Overview

The LM4051CIX3-1.2+T is a precision two-terminal shunt-mode bandgap voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown voltage of 1.225V with an initial accuracy grade of C (±0.5%). The device features a maximum temperature coefficient of 50ppm/°C and operates within a wide current range of 60µA to 15mA. It utilizes an ultra-small 3-pin SC70 surface-mount package, measuring 1.8mm x 1.8mm. The component ensures stability without external capacitors across all capacitive loads and functions reliably over an extended temperature range of -40°C to +125°C.

Voltage Reference Feature Summary

• Ultra-small 3-pin SC70 surface-mount package for space-critical applications
• No external stabilizing capacitor required while tolerating any capacitive load
• Laser-trimmed resistors ensure precise initial accuracy
• Low dynamic impedance maintains stable output voltage across wide operating currents

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix 'C' corresponds to the ±0.5% initial accuracy grade when sourcing. Confirm the '+T' designation indicates tape-and-reel packaging compatible with automated assembly lines. Ensure the manufacturer listing matches Analog Devices Inc. or Maxim Integrated as per the part identification. Cross-reference the SC70-3 footprint requirements with your PCB layout specifications before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when a fixed 1.225V reference is required in minimal board space. The C-grade accuracy suits applications where ±0.5% tolerance is acceptable. Consider the 60µA minimum operating current for low-power designs. Verify that the SC70 package dimensions fit within the designated area constraints compared to larger SOT-23 alternatives.

Voltage Reference Part Context

This part belongs to the LM4050/LM4051 family of precision micropower shunt voltage references. The series offers multiple fixed reverse breakdown voltages including 1.225V, 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. The family is characterized by its small form factor and ability to operate without external stabilization components, making it suitable for various portable and industrial electronic designs.

Voltage Reference Replacement Considerations

Compatible substitutes include other LM4051 variants with different accuracy grades such as LM4051AIM3X-1.2/NOPB (0.1% accuracy) or LM4051BIM3X-1.2/NOPB (0.2% accuracy). Ensure the replacement maintains the same 1.225V output and SC70 package type. Verify that the alternative meets the required 50ppm/°C temperature coefficient specification.