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Product Detailed Parameters
- Description：IC VREF SHUNT 2% SOT23-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Current - Output：15 mA
- Operating Temperature：-40°C ~ 85°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 LM4040EIM3-2.5 is a micropower shunt voltage reference manufactured by Texas Instruments, housed in a 3-pin SOT-23 package. It provides a nominal output voltage of 2.5 V with an initial accuracy of ±0.5%. The device features a temperature coefficient of 100 ppm/°C and operates within a junction temperature range of -40°C to +85°C. Maximum shunt current is rated at 15 mA, while minimum operating current is typically 60 µA. The component is lead-free and RoHS compliant.
Feature Summary
- Provides stable precision voltage reference in compact surface-mount packaging
- Operates with low quiescent current for battery-powered applications
- Maintains specified performance across industrial temperature ranges
Applications
- Portable instrumentation requiring precise voltage references
- Battery-operated measurement systems
- Data acquisition systems needing stable analog references
Procurement Notes
Verify the complete part number including suffixes such as NOPB or X when ordering, as these indicate specific packaging or compliance variations. Confirm the manufacturer source is authorized to ensure authenticity. Check current availability status as some variants may be subject to limited supply or end-of-life notices. Ensure the selected package matches the PCB footprint requirements.
Selection Notes
Select this component when a 2.5 V reference with 100 ppm/°C stability is required in a small SOT-23 form factor. Consider the ±0.5% initial accuracy for general-purpose applications. Evaluate the 15 mA maximum current capability against load requirements. Compare against other LM4040 series variants if different accuracy grades or voltage outputs are needed.
Part Context
This device belongs to the LM4040-N family of precision micropower shunt voltage references from Texas Instruments. The family includes various accuracy grades and output voltages available in SOT-23, TO-92, and SC-70 packages. The LM4040 series is designed for applications requiring stable references with minimal power consumption.
Replacement Considerations
LM4040AIM3-2.5 offers higher accuracy (±0.1%) but may have different thermal characteristics. LM4040CIM3-2.5 provides lower accuracy (±1%). Verify pinout compatibility and thermal resistance differences before substitution.
