LM4051CIM3X-1.2/NOPB

Voltage Reference Overview

The LM4051CIM3X-1.2/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.2V with an initial accuracy of 0.5% and a temperature coefficient of 50 ppm/°C. The device operates within a supply voltage range of 1.24 V to 10 V and supports a maximum cathode current of 12 mA. It functions reliably across an extended temperature range from -40°C to +85°C. Packaged in a compact SOT-23-3 surface-mount case, it is designed for space-constrained applications requiring stable voltage references.

Voltage Reference Feature Summary

• Delivers high-precision voltage regulation with 0.5% initial accuracy
• Optimized for low-power systems with micropower consumption characteristics
• Ensures thermal stability through a low temperature coefficient of 50 ppm/°C
• Utilizes a compact SOT-23-3 package for efficient board space utilization

Voltage Reference Applications

• Portable battery-powered instrumentation
• Handheld measurement devices
• Data acquisition systems
• Battery management circuits

Voltage Reference Procurement Notes

Verify the complete part number including the suffix /NOPB to confirm lead-free compliance and specific packaging configuration. Confirm the operating temperature grade corresponds to the C variant (-40°C to +85°C) required for your application environment. Ensure the input voltage remains within the specified 1.24 V to 10 V range to maintain regulation accuracy. Check for any recent product change notifications regarding manufacturing sites or material composition updates.

Voltage Reference Selection Notes

Select this component when a fixed 1.2V reference is required with tight tolerance specifications. The 0.5% accuracy makes it suitable for applications demanding higher precision than standard zener diodes. Consider the 12 mA maximum current capability against load requirements. The SOT-23-3 package is ideal for designs where footprint size is critical. Evaluate the 50 ppm/°C temperature coefficient against expected thermal variations in the final assembly.

Voltage Reference Part Context

This device belongs to the LM4051 series of precision micropower shunt voltage references from Texas Instruments. The series is engineered to provide stable reference voltages in minimal space. The LM4051 family offers various fixed voltage options and accuracy grades. The CIM3X designation indicates a specific temperature range and tape-and-reel packaging format optimized for automated surface-mount assembly processes.

Voltage Reference Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.