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Product Detailed Parameters
- Description：IC REG LINEAR -12V 200MA TO39-3
- Series：-
- Mfr：National Semiconductor
- Package：Bulk
- Output Configuration：Negative
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：-32V
- Voltage - Output (Min/Fixed)：-12V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：200mA
- Current - Quiescent (Iq)：1 mA
- Current - Supply (Max)：-
- PSRR：64dB (120Hz)
- Control Features：-
- Protection Features：Over Temperature
- Operating Temperature：-55°C ~ 150°C
- Mounting Type：Through Hole
- Package / Case：TO-205AD, TO-39-3 Metal Can
- Supplier Device Package：TO-39-3
- Grade：-
- Qualification：-
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Overview
The LM120H-12 is a three-terminal negative linear voltage regulator from the LM120 series, manufactured by National Semiconductor. It provides a fixed output voltage of -12V with a maximum load current capability of 0.2A in the TO-39 package. The device operates within an input voltage range of -32V to -14V and features a typical line regulation of 0.05% and load regulation of 0.2%. It includes internal thermal overload protection and short-circuit current limiting for robust operation.
Feature Summary
- Fixed negative output voltage regulation
- Internal thermal overload protection
- Short-circuit current limiting
Applications
- Negative power supply rails in analog circuits
- Biasing networks requiring stable negative voltage
- General-purpose linear regulation applications
Procurement Notes
Verify the manufacturer marking matches National Semiconductor or Texas Instruments specifications. Confirm the package type is TO-39 and the suffix indicates NOPB if lead-free compliance is required. Check datasheet revisions for any updates to electrical characteristics or pin configurations before integration.
Selection Notes
Select this component when a fixed -12V negative rail is needed with moderate current demands up to 200mA. Ensure the input voltage remains within the specified -32V to -14V range to maintain proper regulation. Consider thermal dissipation requirements based on the voltage drop and load current in the specific application environment.
Part Context
This part belongs to the LM120/LM320-N series of three-terminal negative regulators. These devices are designed as direct replacements for older standard regulator types but offer improved performance characteristics. The series includes various fixed output voltages such as -5V, -12V, and -15V to support diverse circuit design needs.
Replacement Considerations
LM120H-12/NOPB is a verified equivalent variant offering lead-free compliance while maintaining identical electrical specifications and pinout compatibility.
