LM4050BIM3X-4.1

Voltage Reference Overview

The LM4050BIM3X-4.1 is a precision micropower shunt voltage reference manufactured by Texas Instruments, designed for space-critical applications. It provides a fixed reverse breakdown voltage of 4.096 V with an initial accuracy of ±0.2% at 25°C. The device operates within an industrial temperature range from -40°C to +85°C and features a maximum temperature coefficient of 50 ppm/°C. It utilizes a miniature SOT-23 surface-mount package measuring 3 mm × 1.3 mm. The component tolerates capacitive loads without requiring external stabilizing capacitors and supports a maximum operating current of 15 mA.

Voltage Reference Feature Summary

• Eliminates the need for external stabilizing capacitors while ensuring stability with any capacitive load
• Utilizes fuse and Zener-zap reverse breakdown voltage trim during wafer sort to ensure high accuracy
• Incorporates bandgap reference temperature drift curvature correction for stable performance across temperatures

Voltage Reference Applications

• Portable, battery-powered equipment
• Data acquisition systems
• Instrumentation
• Process control
• Precision audio components

Voltage Reference Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact voltage tolerance and temperature grade. Confirm that the component meets RoHS compliance requirements for your region. Ensure the procurement channel sources genuine Texas Instruments products to avoid counterfeit devices. Check for any recent product change notifications regarding packaging or manufacturing site updates.

Voltage Reference Selection Notes

Select this component when a compact footprint is required alongside precise voltage regulation in industrial environments. The B-grade designation indicates a ±0.2% initial accuracy suitable for moderate precision needs. Consider the extended temperature range options if operation beyond 85°C is necessary. Evaluate the minimum operating current requirements against the system's quiescent current constraints.

Voltage Reference Part Context

This part belongs to the LM4050-N series of precision micropower shunt voltage references. The series offers multiple fixed reverse breakdown voltages including 2.048 V, 2.5 V, 4.096 V, 5 V, 8.192 V, and 10 V. The LM4050-N family is designed to replace larger packages while maintaining high precision and low power consumption characteristics typical of shunt regulators.

Voltage Reference Replacement Considerations

LM4050AIM3X-4.1/NOPB: Offers higher initial accuracy (±0.1%) but may have different thermal characteristics. LM4050CIM3X-4.1/NOPB: Provides lower initial accuracy (±0.5%) which may be sufficient for less critical applications.