LM317AT vs LM317S

This in-depth comparison of the LM317AT and LM317S provides valuable insights into their specifications and key features. We cover important factors in detail, including RoHS compliance, REACH status, series, mounting style, package type, and other relevant characteristics. Presenting the differences side by side simplifies component selection, making it easier for you to select the best option for your specific application.

Technical review by ETEI Component Engineering Source: manufacturer documentation

Parts at a glance

Part A

LM317AT

Texas Instruments

Lifecycle
Active
Stock
3354 PCS
Series
Power Management (PMIC) - Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
+BOM RFQ
Part B

LM317S

National Semiconductor

Lifecycle
Active
Stock
2550 PCS
Package
TO-263-3
Series
PMIC - Voltage Regulators - Linear
+BOM RFQ

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Full specification comparison

Use manufacturer datasheets as the final authority.

Specification LM317AT LM317S
Part Status Obsolete Active
Base Product Number LM317 -
Output Configuration Positive -
Output Type Adjustable -
Number of Regulators 1 -
Voltage - Input (Max) 40V -
Voltage - Output (Min / Fixed) 1.25V -
Voltage - Output (Max) 37V -
Current - Output 1.5A -
Current - Quiescent (Iq) 10 mA -
PSRR 80dB ~ 65dB (120Hz) -
Protection Features Over Current, Over Temperature, Short Circuit -
Operating Temperature -40°C ~ 125°C -
Mounting Type Through Hole -
Packaging Tube -
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