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Product Detailed Parameters
- Description：IC VREF SHNT -2.43%/+2.02% SOT23
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：1.235V
- Voltage - Output (Max)：-
- Current - Output：20 mA
- Operating Temperature：0°C ~ 70°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 LM385M3-1.2/NOPB is a micropower shunt voltage reference diode manufactured by Texas Instruments, designed for precision applications requiring stable voltage regulation in compact form factors. It operates within a temperature range of 0°C to +70°C and utilizes an SOT-23 surface-mount package with three pins. The device provides a nominal output voltage of 1.235V with an initial accuracy of ±2% and a maximum temperature coefficient of 150 ppm/°C. It supports a maximum shunt current of 20 mA and functions with a minimum cathode current of 10 µA.
Feature Summary
- Provides a fixed 1.235V reference output suitable for low-voltage circuits
- Operates over a wide cathode current range from 10 µA to 20 mA
- Utilizes a compact SOT-23 surface-mount package for space-constrained designs
Applications
- Portable battery-powered instrumentation
- Data acquisition systems
- Microprocessor supply monitoring
Procurement Notes
Verify the specific suffix 'M3' against the official datasheet to confirm the exact package variant and tape-and-reel specifications. Ensure the operating environment remains within the commercial temperature limits of 0°C to +70°C. Confirm that the required load current does not exceed the maximum shunt current rating of 20 mA to maintain regulation stability.
Selection Notes
Select this component when a fixed 1.235V reference is required in a small SOT-23 footprint. It is appropriate for applications where power consumption must be minimized due to the low minimum operating current. Consider the ±2% initial accuracy and 150 ppm/°C temperature coefficient against system tolerance requirements.
Part Context
This part belongs to the LM385 family of micropower voltage references, which includes adjustable and fixed versions. The LM385 series is widely used as a standard reference in analog-to-digital converters and sensor interfaces. The '/NOPB' designation indicates a lead-free and RoHS-compliant manufacturing process.
Replacement Considerations
LM385M3-1.2
FAQ
What is the minimum operating current for the LM385M3-1.2/NOPB?
The device requires a minimum cathode current of 10 µA to maintain proper regulation.
Is the LM385M3-1.2/NOPB available in a through-hole package?
No, the 'M3' suffix specifically denotes the SOT-23 surface-mount package.
