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Product Detailed Parameters
- Description：IC VREF SHUNT 1% SOT23-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Current - Output：15 mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The LM4040DEM3-2.5 is a micropower shunt voltage reference from Texas Instruments, providing a fixed output of 2.5 V. It features an initial accuracy of 1% and a temperature coefficient of 150 ppm/°C. The device operates within a junction temperature range of -40°C to +85°C and supports a maximum shunt current of 15 mA. Packaged in a surface-mount SOT-23-3 case, it is designed for precision applications requiring stable voltage regulation with low power consumption.
Feature Summary
- Provides a precise 2.5 V reference voltage with 1% initial accuracy
- Operates as a micropower shunt reference suitable for battery-powered systems
- Utilizes a compact SOT-23-3 surface-mount package for space-constrained designs
Applications
- Portable instrumentation requiring stable voltage references
- Battery-operated measurement devices
- Data acquisition systems needing precise analog references
Procurement Notes
Verify the specific suffix 'DEM3' against the official datasheet to confirm the 1% accuracy grade and commercial temperature range (-40°C to +85°C). Ensure the ordering part number matches the required tolerance and package type, as variations exist within the LM4040 family. Confirm RoHS compliance status for the specific manufacturing batch.
Selection Notes
Select this component when a 2.5 V reference with 1% accuracy is sufficient for the application. It is appropriate for commercial-grade environments operating up to 85°C. For higher precision or automotive qualification, consider alternative grades such as AIM3 or QIM3 variants within the same family.
Part Context
This device belongs to the LM4040-N series of precision micropower shunt voltage references. It serves as a cost-effective solution for applications requiring a stable voltage reference without the complexity of adjustable regulators. The SOT-23 packaging allows for efficient PCB layout in modern electronic designs.
Replacement Considerations
Public documentation indicates that LM4040DEM3-50 has an alternate part number LM4040DEM3-5.0/NO. Specific direct substitutes for the 2.5V DEM3 variant are not explicitly listed in the provided source material.
