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Product Detailed Parameters
- Description：IC VREF SHUNT 1% 8SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：1.235V
- Voltage - Output (Max)：-
- Current - Output：20 mA
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The LM285D-1.2 is a micropower two-terminal bandgap voltage reference diode manufactured by Texas Instruments. It provides a fixed output voltage of 1.235 V with initial tolerance grades including 1.0%, 1.5%, 2.0%, and 3.0%. The device operates over a wide current range from 10 µA to 20 mA, featuring low dynamic impedance of 1.0 Ω and low noise. It is specified for an operating temperature range of -40°C to +85°C and is housed in a surface-mount SOIC-8 package.
Feature Summary
- Micropower two-terminal bandgap voltage regulator diode
- Low dynamic impedance and low noise characteristics
- Stable operation over time and temperature
- Tight voltage tolerances achieved by on-chip trimming
Applications
- Portable instrumentation
- Regulators
- Analog circuitry requiring extended battery life
Procurement Notes
Verify the specific tolerance grade suffix (e.g., B for 1%, C for 1.5%) as the base part number may not specify accuracy. Confirm the SOIC-8 package designation matches design requirements. Ensure the -40°C to +85°C industrial temperature range aligns with system specifications. Check RoHS compliance status for environmental regulations.
Selection Notes
Select this component for applications requiring stable voltage references with minimal power consumption. The wide operating current range allows flexibility in biasing resistor selection. Consider the available tolerance grades to balance cost against precision requirements. The surface-mount package facilitates automated assembly processes.
Part Context
Part of the LM285/LM385 series of micropower voltage references. The LM285 variant covers the -40°C to +85°C range, while the LM385 is rated for 0°C to +70°C. Both series offer 1.235 V and 2.500 V options. The LM285D-1.2 specifically denotes the 1.235 V version in a surface-mount package.
Replacement Considerations
LM285Z-1.2/NOPB: Through-hole TO-92 equivalent. LM385-1.2: Industrial/Commercial variants with different temperature ratings. Verify pinout compatibility and thermal performance when substituting.
