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Product Detailed Parameters
- Description：IC VREF SHUNT 1.5% TO92-3
- Series：-
- Mfr：National Semiconductor
- Package：Bulk
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Current - Output：20 mA
- Operating Temperature：0°C ~ 70°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 LM385BZ-2.5 is a micropower voltage reference diode manufactured by National Semiconductor, now part of Texas Instruments. It provides a nominal output voltage of 2.5 V with an initial accuracy of ±0.8%. The device operates in shunt mode within a recommended current range of 10 µA to 20 mA. It utilizes bipolar bandgap technology and features a low temperature coefficient of 50 ppm/°C. The component is housed in a TO-92 three-pin plastic package and supports a maximum operating temperature of 70 °C.
Feature Summary
- Provides stable 2.5 V reference voltage with high precision
- Operates at micropower levels suitable for battery applications
- Low temperature coefficient ensures stability across temperature ranges
Applications
- Battery-powered measurement systems
- Portable instrumentation
- Data acquisition systems
Procurement Notes
Verify the manufacturer designation as National Semiconductor or Texas Instruments depending on production era. Confirm the suffix 'B' indicates the ±0.8% accuracy grade and 'Z' denotes the TO-92 package. Ensure compliance requirements match the specific revision, as older versions may not be RoHS compliant.
Selection Notes
Select this component when a precise 2.5 V reference is required in space-constrained designs using through-hole packages. The ±0.8% tolerance offers better accuracy than standard grades. Ensure circuit design maintains current between 10 µA and 20 mA for optimal performance.
Part Context
This device belongs to the LM285/LM385 family of two-terminal voltage references. The LM385 series represents the improved version over the LM285, offering lower noise and better long-term stability. The 'B' grade signifies tighter initial accuracy compared to the standard 'C' grade.
Replacement Considerations
LM385BZ-2.5/NOPB (Texas Instruments)
FAQ
What is the minimum operating current for the LM385BZ-2.5?
The recommended operating current range is 10 µA to 20 mA. Operation below 10 µA may result in reduced accuracy.
Does the LM385BZ-2.5 require external components to function?
No, it is a two-terminal device that requires only a series resistor to limit current from the supply voltage.
