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Product Detailed Parameters
- Description：IC REG LINEAR POS ADJ 1.5A TO3
- Series：-
- Mfr：STMicroelectronics
- Package：Bag
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：1.2V
- Voltage - Output (Max)：37V
- Voltage Dropout (Max)：-
- Current - Output：1.5A
- Current - Quiescent (Iq)：-
- Current - Supply (Max)：-
- PSRR：80dB ~ 65dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-25°C ~ 150°C
- Mounting Type：Through Hole
- Package / Case：TO-204AA, TO-3
- Supplier Device Package：TO-3
- Grade：-
- Qualification：-
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Overview
The LM217K is a monolithic positive adjustable voltage regulator from the LM117/217/317 series, manufactured by STMicroelectronics. It operates in a TO-3 package and provides an output voltage range of 1.2 to 37V with load current exceeding 1.5A. The device features line regulation of 0.02%/V and load regulation of 0.3% at voltages above 5V. It includes internal protections such as current limiting, thermal shutdown, and safe operating area (SOA) control. The operating junction temperature range is -25°C to 150°C.
Feature Summary
- Positive adjustable voltage regulation capability
- Internal current limiting and thermal shutdown protection
- Safe operating area (SOA) control for high voltage floating operation
Applications
- High voltage power supplies
- Programmable output regulators
- Precision current regulators
Procurement Notes
Verify the specific ordering suffix 'K' corresponds to the TO-3 package configuration as documented in official datasheets. Confirm that the component meets the required environmental specifications for the intended application environment. Ensure compatibility with existing circuit designs regarding pinout and thermal management requirements before procurement.
Selection Notes
Select this component when a robust, through-hole regulated power supply solution is required for industrial or commercial applications. The TO-3 package offers superior thermal dissipation compared to surface-mount alternatives. Consider the device's ability to handle high input-to-output differential voltages up to 40V for flexible system design.
Part Context
The LM217K belongs to the LM217 family of linear voltage regulators produced by STMicroelectronics. This family shares core electrical characteristics with the LM117 and LM317 variants, differing primarily in operating temperature ranges and available packaging options. The LM217 variant specifically supports an extended low-temperature range down to -25°C.
Replacement Considerations
LM317K serves as a functional substitute within the same family, sharing identical electrical performance but rated for a higher maximum operating temperature of 125°C.
