LM317LIBP Equivalent & Substitute Parts

Part Overview

The LM317LIBP is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. It delivers 100mA output current with an adjustable voltage range from 1.2V to 37V, making it suitable for power management applications requiring flexible voltage regulation. The device is classified as obsolete, which necessitates identification of active equivalent parts for new designs and ongoing production requirements.

Substiute Parts

LM317LIBP

Texas InstrumentsIn Stock: 1205LM317LIBP Datasheet

Current PartRFQ

LM317LITP/NOPB

Texas InstrumentsIn Stock: 15225LM317LITP/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM317LIBP is determined by strict equivalence across the following critical parameters:

• Output configuration (Positive)
• Output type (Adjustable)
• Voltage specifications (Input Max: 40V, Output range: 1.2V to 37V)
• Current rating (100mA)
• Operating temperature range (-40°C ~ 125°C)
• Mounting type (Surface Mount)
• Package compatibility (6-DSBGA)
• Protection features (Over Current, Over Temperature, Short Circuit)

The LM317LITP/NOPB meets all these criteria and is the manufacturer-recommended substitute. It maintains identical electrical specifications while offering active product status and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The LM317LITP/NOPB is the direct substitute for the obsolete LM317LIBP. Both devices share identical electrical specifications and functional characteristics. The substitute offers the following advantages:

• Active product status ensures long-term availability and supply chain continuity
• ROHS3 compliance meets current environmental and regulatory requirements
• Tape & Reel packaging supports automated assembly processes
• Quiescent current specification of 5mA is documented, providing clarity for power budget calculations

The LM317LITP/NOPB is suitable for direct replacement in all applications where the LM317LIBP was previously specified.

Frequently Asked Questions (FAQ)

Q: Can the LM317LITP/NOPB be used as a direct replacement for the LM317LIBP?

A: Yes. Both devices are manufactured by Texas Instruments and share identical electrical specifications, output configurations, voltage ranges, current ratings, and protection features. The substitute is the manufacturer-recommended equivalent.

Q: What is the difference in quiescent current between the two parts?

A: The LM317LIBP specifies 2.5mA quiescent current, while the LM317LITP/NOPB specifies 5mA. This difference should be evaluated in applications where standby power consumption is critical.

Q: Are there package differences between these parts?

A: Both use 6-DSBGA packaging for the core device. The LM317LITP/NOPB is available in Tape & Reel packaging format, which is standard for production environments, whereas the LM317LIBP was supplied in bulk packaging.

Q: Does the substitute meet current compliance requirements?

A: Yes. The LM317LITP/NOPB is ROHS3 compliant and REACH unaffected, meeting current environmental regulations. The obsolete LM317LIBP does not carry these certifications.

Q: Are the thermal and operating characteristics identical?

A: Yes. Both devices operate across the same temperature range (-40°C ~ 125°C) and provide identical protection features including over-current, over-temperature, and short-circuit protection.