LM4051BIM3X-ADJ

Voltage Reference Overview

The LM4051BIM3X-ADJ is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides an adjustable output voltage ranging from 1.225 V to 10 V, set via external resistors. The device features a maximum initial accuracy of 0.2% and a temperature coefficient of 50 ppm/°C. It operates within a current range of 60 µA to 12 mA and functions in temperatures from -40°C to +85°C. Packaged in a SOT-23-3 surface-mount case, it requires no output capacitors for stability.

Voltage Reference Feature Summary

• Adjustable output voltage selectable between 1.225 V and 10 V using external resistor dividers
• High precision with 0.2% maximum initial accuracy and low temperature drift
• Capacitive load tolerant design eliminating the need for output capacitors
• Micropower operation suitable for battery-powered applications

Voltage Reference Applications

• Portable and battery-powered equipment
• Data acquisition systems
• Power supply monitoring circuits
• Industrial process control instrumentation

Voltage Reference Procurement Notes

Verify the specific suffix against the manufacturer's latest datasheet to confirm pinout compatibility and electrical tolerances. Ensure the ordering code matches the required accuracy grade and temperature range specifications for your design. Cross-reference the package marking codes to distinguish between original National Semiconductor and Texas Instruments production runs.

Voltage Reference Selection Notes

Select this component when an adjustable reference is required in a space-constrained SOT-23-3 footprint. It is suitable for designs needing better than 0.5% accuracy without the complexity of series references. Consider the 60 µA minimum operating current when designing bias networks for low-power standby modes.

Voltage Reference Part Context

This part belongs to the LM4051 family of precision micropower shunt voltage references. It serves as a compact alternative to larger packages while maintaining high stability. The device integrates bandgap reference technology to provide reliable performance across industrial temperature ranges.

Voltage Reference Replacement Considerations

LM4051AIM3X-ADJ/NOPB offers higher 0.1% accuracy. LM4051CIM3X-ADJ/NOPB provides standard 0.5% tolerance. LM4040 series devices offer fixed voltages only.