STMicroelectronics LM317K Microcontrollers

Adjustable Linear Voltage Regulator, 1.5A, 40V In, 37V Out, TO-3

2,018STMicroelectronicsTO-204AA, TO-3$0.15

Same model may have multiple batches, images only for reference.

LM317K

Manufacturer

STMicroelectronics

Part Number (MPN)

LM317K

Technical Specifications

STMicroelectronics LM317K Microcontrollers technical specifications.

General

Package / Case

TO-204AA, TO-3

Mounting Type

Through Hole

Operating Temperature

0°C ~ 125°C

Lifecycle Status

Obsolete

Output Type

Adjustable

Max Input Voltage

40V

Output Current

1.5A

Output Configuration

Positive

Output Voltage

1.2V

Voltage Output Max

37V

Alternate Parts Comparison (LM317K vs LM2901DT vs LM393DT vs LM2904ST)

Side-by-side technical parameter comparison of related primary models in this product family.

	This Part	Alternate Parts	Alternate Parts	Alternate Parts
	STMicroelectronicsLM317K	STMicroelectronicsLM2901DT	STMicroelectronicsLM393DT	STMicroelectronicsLM2904ST
Package / Case	TO-204AA, TO-3	14-SOIC	8-SOIC	8-TSSOP
Mounting Type	Through Hole	Surface Mount	Surface Mount	Surface Mount
Operating Temperature	0°C ~ 125°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 125°C
Lifecycle Status	Obsolete	Obsolete	Production	Active
Output Type	Adjustable	TTL	TTL	Single-Ended
Quiescent Current	10 mA	2.5 mA	2.5 mA	--
Grade	--	Industrial	Industrial	Industrial
Input Voltage Min	--	2.0	2.0	3.0
Maximum Operating Temperature C	--	125.0	70.0	125.0
Minimum Operating Temperature C	--	-40.0	0.0	-40.0
Number of Circuits	--	4	2	2
Package	--	SOP	SOP	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Action	RFQ	RFQ	RFQ	RFQ

Cross Reference

Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .

Suggested replacements

LM317TG onsemi

Similaronsemi

Pin YesPkg NoElec Yes

Adjustable Linear Voltage Regulator, 1.5A, 40V In, 37V Out, TO-220

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