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Product Detailed Parameters
- Description：IC REG LINEAR POS ADJ 1.5A TO3-2
- Series：-
- Mfr：Texas Instruments
- Package：Bulk
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：41.25V
- Voltage - Output (Min/Fixed)：1.2V
- Voltage - Output (Max)：37V
- Voltage Dropout (Max)：-
- Current - Output：1.5A
- Current - Quiescent (Iq)：100 µA
- Current - Supply (Max)：-
- PSRR：-
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Through Hole
- Package / Case：TO-204AA, TO-3
- Supplier Device Package：TO-3-2
- Grade：-
- Qualification：-
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Overview
The LM117K/883/MABI is a three-terminal adjustable positive voltage regulator manufactured by Texas Instruments. It provides an output voltage range from 1.2 V to 37 V with a maximum load current of 1.5 A. The device operates within a junction temperature range of -55 °C to 125 °C and features a dropout voltage of approximately 1.5 V at full load. It utilizes a TO-3 metal can package, suitable for high-power applications requiring robust thermal performance and stable regulation under varying line and load conditions.
Feature Summary
- Provides continuously adjustable output voltage using two external resistors
- Delivers up to 1.5 A load current with internal current limiting and thermal protection
- Operates effectively over a wide input-to-output differential voltage range
Applications
- High-power linear power supplies
- Adjustable voltage regulators in industrial equipment
- Test and measurement instrumentation power stages
Procurement Notes
Verify the specific suffix MABI against the manufacturer's official datasheet to confirm pinout configuration and qualification level. Ensure the ordering part number matches the required package style and military screening standards. Cross-reference the component marking with the official documentation to prevent counterfeit substitution.
Selection Notes
Select this component when a robust, high-current adjustable regulator is required for harsh environments. The TO-3 package offers superior heat dissipation compared to plastic packages. Consider the minimum dropout voltage requirements relative to the input supply rail to ensure proper regulation during peak load currents.
Part Context
This part belongs to the LM117 family of three-terminal adjustable regulators. It shares functional similarities with the LM317 but is designed for higher current capabilities and ruggedized packaging. The family is widely used in applications requiring reliable voltage adjustment without complex feedback networks.
Replacement Considerations
Direct replacements include the LM117H/883 or LM117MJ/883. Verify that substitute parts match the TO-3 package dimensions and electrical specifications. Ensure compatibility with existing thermal management solutions and circuit board layouts.
