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Product Detailed Parameters
- Description：IC VREF SHUNT 2.5V TO46-2
- Series：LM185-2.5QML
- Mfr：Texas Instruments
- Package：Tray
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Current - Output：20 mA
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Through Hole
- Package / Case：TO-46-2 Metal Can
- Supplier Device Package：TO-2
- Grade：-
- Qualification：-
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Overview
The LM185H-2.5-SMD is a micropower shunt voltage reference manufactured by Texas Instruments, providing a nominal output of 2.5 V. It features an initial accuracy of ±3% and operates within a temperature range of 0°C to +70°C. The device supports a maximum shunt current of 20 mA and exhibits a load regulation of 20 mV. Designed for surface-mount applications, it utilizes an SOIC package with eight pins, offering a compact solution for precision voltage referencing in power management circuits.
Feature Summary
- Provides a stable 2.5 V reference voltage via shunt topology
- Designed for micropower operation with low current consumption
- Surface-mount construction for automated assembly integration
Applications
- Precision analog-to-digital converter (ADC) reference sources
- Portable battery-powered instrumentation requiring low quiescent current
- Temperature sensing circuit biasing
- Comparator reference voltage generation
Procurement Notes
Verify the specific suffix 'SMD' against the official datasheet to confirm the exact package type and tape-and-reel configuration. Ensure the component meets RoHS compliance requirements if applicable to your manufacturing standards. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before procurement.
Selection Notes
Select this component when a fixed 2.5 V reference is required in a surface-mount form factor. Consider the ±3% initial accuracy and 0°C to +70°C operating range against application thermal constraints. Evaluate the 20 mA maximum shunt current capability to ensure adequate headroom for the intended load conditions without exceeding power dissipation limits.
Part Context
This part belongs to the LM185/LM285/LM385 family of adjustable micropower voltage references from Texas Instruments. These devices are widely used as precision references in industrial and consumer electronics. The LM185 variant typically denotes military or extended grade specifications in some contexts, though commercial variants exist.
Replacement Considerations
Compatible substitutes include LM285LP-2-5 and LM385D-2.5. Verify pinout compatibility and package dimensions when transitioning between through-hole and surface-mount alternatives.
