LM4040DIM3-4.1-TR

Overview

The LM4040DIM3-4.1-TR is a precision micropower shunt voltage reference manufactured by Microchip Technology, housed in a 3-pin SOT-23 surface-mount package. It provides a fixed reverse-breakdown output voltage of 4.096 V with an initial accuracy tolerance of ±1% at +25°C. The device operates within a temperature range of -40°C to +85°C and features a maximum average temperature coefficient of 150 ppm/°C. Minimum operating current is specified at 73 µA, while the maximum operating current reaches 15 mA.

Feature Summary

• Bandgap reference architecture with curvature correction for stable performance across wide temperature and current ranges
• Capable of tolerating capacitive loads without requiring external output capacitors
• Low dynamic impedance ensures consistent reverse-breakdown voltage accuracy under varying conditions

Applications

• Battery-powered equipment
• Data acquisition systems
• Instrumentation
• Process control
• Energy management

Procurement Notes

Verify that the ordering suffix '-TR' corresponds to tape-and-reel packaging as indicated by standard manufacturer conventions. Confirm the 'D' grade designation aligns with the required ±1% initial accuracy and 150 ppm/°C temperature coefficient specifications. Ensure the component matches the 3-pin SOT-23 footprint requirements for the target PCB layout.

Selection Notes

Select this component when space-constrained designs require a subminiature SOT-23 package. It is suitable for applications needing a fixed 4.096 V reference with moderate precision (±1%). Consider the minimum operating current of 73 µA for power budget calculations. Verify compatibility with the intended load current range up to 15 mA.

Part Context

This part belongs to the LM4040/LM4041 family of precision micropower shunt voltage references. The LM4040 series offers fixed voltages including 2.500 V, 4.096 V, and 5.000 V. The 'D' suffix denotes the ±1% accuracy grade, distinguishing it from higher precision C-grade variants. The device utilizes bandgap technology for thermal stability.

Replacement Considerations

LM4040CYM3-4.1-TR: Offers ±0.5% accuracy and 100 ppm/°C tempco. LM4040BIM3-4.1+T: Provides ±0.2% accuracy and 30 ppm/°C tempco. Both maintain the 4.096 V output and SOT-23 package.