LM2931AD-5.0 Equivalent & Substitute Parts

Part Overview

The LM2931AD-5.0 is a linear voltage regulator IC from onsemi, delivering a fixed 5V output at 100mA in an 8-SOIC surface mount package. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The LM2931 series provides positive fixed output regulation with integrated over-current and over-temperature protection, suitable for applications requiring low-dropout linear regulation in compact form factors.

Substiute Parts

LM2931AD-5.0

onsemiIn Stock: 3110LM2931AD-5.0 Datasheet

Current PartRFQ

LM2931AD-5.0G

onsemiIn Stock: 11961LM2931AD-5.0G Datasheet

DirectRFQ

LM2931AM-5.0/NOPB

Texas InstrumentsIn Stock: 338251LM2931AM-5.0/NOPB Datasheet

SimilarRFQ

LM2931AMX-5.0/NOPB

Texas InstrumentsIn Stock: 2849LM2931AMX-5.0/NOPB Datasheet

SimilarRFQ

LM2931M-5.0/NOPB

Texas InstrumentsIn Stock: 8472LM2931M-5.0/NOPB Datasheet

SimilarRFQ

LM2931MX-5.0/NOPB

Texas InstrumentsIn Stock: 10275LM2931MX-5.0/NOPB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2931AD-5.0 is determined by the following critical parameters:

• Output Voltage: 5V fixed output (non-negotiable)
• Output Current Capability: 100mA minimum
• Package Type: 8-SOIC surface mount form factor
• Input Voltage Range: Maximum 26V input tolerance
• Mounting Compatibility: Surface mount technology

Substitute parts are grouped into two categories:

Direct Substitutes (Identical Electrical & Mechanical Specifications):

• LM2931AD-5.0G (onsemi) — Active product status, identical specifications, tube packaging

Similar Substitutes (Compatible Electrical Performance, Different Manufacturers):

• LM2931AM-5.0/NOPB (Texas Instruments)
• LM2931AMX-5.0/NOPB (Texas Instruments)
• LM2931M-5.0/NOPB (Texas Instruments)
• LM2931MX-5.0/NOPB (Texas Instruments)

All substitute parts maintain the 5V output, 100mA current rating, 8-SOIC package, and 26V maximum input voltage specification.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): LM2931AD-5.0G is the primary substitute. It maintains identical electrical specifications and package form factor as the obsolete LM2931AD-5.0, with the advantage of active product status and ROHS3 compliance. This part is recommended for designs requiring no circuit modifications.

For New Designs and Production: Texas Instruments LM2931 variants (LM2931AM-5.0/NOPB, LM2931AMX-5.0/NOPB, LM2931M-5.0/NOPB, LM2931MX-5.0/NOPB) are suitable alternatives with active product status and ROHS3 compliance. These parts offer improved voltage dropout performance (0.3V vs. 0.6V) and enhanced protection features including reverse polarity and short circuit protection. Operating temperature range is -40°C to 85°C, which is narrower than the original part's -40°C to 125°C specification.

Compliance Considerations: All substitute parts are ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements. The original LM2931AD-5.0 is RoHS non-compliant and obsolete, making substitution necessary for new production.

Frequently Asked Questions (FAQ)

Q: Can LM2931AD-5.0G be used as a direct drop-in replacement for LM2931AD-5.0? A: Yes. LM2931AD-5.0G maintains identical electrical specifications (5V output, 100mA current, 0.6V dropout at 100mA, 1mA quiescent current) and the same 8-SOIC package. The primary difference is active product status and ROHS3 compliance.

Q: What are the differences between onsemi and Texas Instruments LM2931 variants? A: Both manufacturers produce functionally compatible parts with the same 5V output and 100mA rating in 8-SOIC packages. Texas Instruments variants offer lower voltage dropout (0.3V vs. 0.6V) and additional protection features (reverse polarity, short circuit). Operating temperature range differs: onsemi extends to 125°C while Texas Instruments variants operate to 85°C.

Q: Are packaging variants (tube vs. cut tape) electrically equivalent? A: Yes. Packaging differences (tube, cut tape, digi-reel) do not affect electrical performance. Selection depends on assembly process requirements and quantity needs.

Q: Which substitute is best for high-temperature applications above 85°C? A: LM2931AD-5.0G maintains the original -40°C to 125°C operating range. Texas Instruments variants are limited to -40°C to 85°C.

Q: Do all substitutes require circuit modifications? A: No. All listed substitutes maintain the same 5V output, 100mA current capability, and 8-SOIC package footprint. No circuit modifications are required for electrical or mechanical compatibility.