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Product Detailed Parameters
- Description：IC REG LINEAR -5V 1.5A TO3
- Series：-
- Mfr：Texas Instruments
- Package：Bulk
- Output Configuration：Negative
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：-25V
- Voltage - Output (Min/Fixed)：-5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：1.5A
- 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-3
- Grade：-
- Qualification：-
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Overview
The LM120H-5.0/NOPB is an extended temperature, fixed-output negative voltage regulator from Texas Instruments. It provides a stable -5 V output with a maximum load current of 1 A. The device operates within an input voltage range up to -25 V and features a quiescent current of 2 mA. It is housed in a 3-pin TO-CAN (NDT) package designed for surface-mount or through-hole integration. The component supports an extended operating temperature range from -55°C to +150°C, ensuring reliability in harsh environments.
Feature Summary
- Fixed -5 V negative output regulation
- Extended industrial temperature capability (-55°C to +150°C)
- High current capacity up to 1 A
- Integrated thermal protection
Applications
- Industrial control systems requiring negative rail generation
- Military and aerospace electronic equipment
- Automotive electronics operating in extreme temperatures
- Communication infrastructure power supplies
Procurement Notes
Verify the specific suffix 'H' confirms the extended temperature grade (-55°C to +150°C) and 'NOPB' indicates lead-free/RoHS compliance. Ensure the ordering part number matches the exact package style (TO-CAN/NDT) required for your PCB footprint. Cross-reference the manufacturer's latest datasheet revision to confirm pinout compatibility and electrical specifications before finalizing procurement.
Selection Notes
Select this component when a reliable negative voltage rail is needed for analog circuits or op-amp biasing in high-temperature environments. It serves as a direct replacement for standard LM120 variants where extended thermal performance is critical. Consider the 1 A current limit and input voltage headroom requirements to ensure efficient operation without excessive heat dissipation in the TO-CAN package.
Part Context
The LM120 series comprises 3-terminal negative regulators widely used in power management applications. The LM120H variant specifically targets demanding conditions with its extended temperature rating. As part of Texas Instruments' legacy linear regulator portfolio, it offers a robust solution for generating stable negative voltages in systems requiring high reliability and simple implementation.
Replacement Considerations
Public confirmed substitutes include LM120K-5.0/NOPB for commercial temperature grades and LM145 for higher current requirements. Verify that alternative parts match the -5 V output and TO-CAN package dimensions. Check if the substitute supports the required -55°C to +150°C range if operating in extreme environments.
FAQ
What is the maximum input voltage for the LM120H-5.0/NOPB?
The maximum input voltage is -25 V. The device regulates negative voltages, so the input must be more negative than the -5 V output.
Does the LM120H-5.0/NOPB include short-circuit protection?
Yes, the device incorporates internal thermal overload and short-circuit protection to safeguard against damage during fault conditions.
