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Product Detailed Parameters
- Description：LM285-2.5-N MICROPOWER VOLTAGE R
- Series：-
- Mfr：National Semiconductor
- Package：Bulk
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Current - Output：20 mA
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA)
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The LM285BXZ-2.5/NOPB is a micropower voltage reference diode manufactured by Texas Instruments, formerly National Semiconductor. It provides a fixed output voltage of 2.5 V with an initial accuracy of 1.5%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 150 ppm/°C. It utilizes a TO-92-3 through-hole package and supports a maximum shunt current of 20 mA.
Feature Summary
- Provides a stable 2.5 V reference voltage suitable for precision applications
- Operates efficiently at micropower levels with low quiescent current consumption
- Maintains performance across industrial temperature ranges from -40°C to +85°C
Applications
- Battery-powered instrumentation systems requiring low power consumption
- Precision analog-to-digital converter (ADC) reference sources
- Portable measurement devices needing stable voltage benchmarks
Procurement Notes
Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix 'NOPB' indicates lead-free and RoHS compliance. Ensure the package type matches the required TO-92-3 form factor for your PCB layout. Cross-reference the exact part number against official TI databases to confirm availability and datasheet revisions.
Selection Notes
Select this component when a fixed 2.5 V reference is required in a through-hole package. Compare its 150 ppm/°C temperature coefficient against tighter tolerance requirements. Evaluate the 20 mA maximum shunt current limit against circuit load conditions. Consider the 1.5% initial accuracy for budgeting system error margins in precision designs.
Part Context
This device belongs to the LM285 series of micropower voltage references. It shares functional similarities with the LM385 series but offers distinct packaging and performance characteristics. The LM285 series is designed for applications where low power consumption and moderate precision are critical. It serves as a cost-effective solution for general-purpose voltage referencing tasks.
Replacement Considerations
Direct substitutes include the LM285Z-2.5/NOPB and LM285Z-2.5. Verify pinout compatibility and thermal performance before substitution. Check if alternative packages like SOT-23 or SOIC are acceptable for the design.
