LM2931ACTV Equivalent & Substitute Parts

Part Overview

The LM2931ACTV is a linear voltage regulator IC from onsemi designed for positive adjustable output applications. This through-hole TO-220-5 package device delivers 100mA output current with input voltage range up to 26V and adjustable output voltage from 2.7V to 29.5V. The part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and production continuity.

Substiute Parts

LM2931ACTV

onsemiIn Stock: 54837LM2931ACTV Datasheet

Current PartRFQ

LM2931ACTVG

onsemiIn Stock: 1234LM2931ACTVG Datasheet

DirectRFQ

LM2931CT/NOPB

Texas InstrumentsIn Stock: 2192LM2931CT/NOPB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM2931ACTV are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

• Output configuration (Positive Adjustable)
• Package type (TO-220-5)
• Output current rating (100mA)
• Input voltage maximum (26V)
• Adjustable output voltage capability
• Through-hole mounting compatibility

Substitutes are grouped into two categories: direct manufacturer equivalents from onsemi and similar cross-manufacturer alternatives that meet the core electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

LM2931ACTVG (Direct Equivalent): This onsemi part maintains identical electrical specifications to the LM2931ACTV with matching output voltage range (2.7V to 29.5V) and dropout voltage (0.6V @ 100mA). The primary distinction is RoHS3 compliance status. Selection of this part is appropriate when maintaining the original onsemi manufacturer lineage and when RoHS3 compliance is required for new production.

LM2931CT/NOPB (Cross-Manufacturer Alternative): This Texas Instruments part shares the same base product number (LM2931) and maintains TO-220-5 package compatibility with 100mA output current capability. Key differences include a narrower output voltage range (3V to 24V versus 2.7V to 29.5V), improved dropout voltage (0.3V @ 100mA), and active product status. This part is suitable for applications where the output voltage requirement falls within the 3V to 24V range and where active product availability is prioritized. The operating temperature range is limited to -40°C to 85°C compared to the original -40°C to 125°C specification.

Frequently Asked Questions (FAQ)

Q: Can LM2931ACTVG be used as a direct replacement for LM2931ACTV?

A: Yes. The LM2931ACTVG maintains identical electrical specifications including output voltage range, dropout voltage, output current, and operating temperature range. The primary difference is RoHS3 compliance certification.

Q: What are the limitations when using LM2931CT/NOPB as a substitute?

A: The LM2931CT/NOPB has a narrower adjustable output voltage range (3V to 24V) compared to the original part (2.7V to 29.5V). Applications requiring output voltages below 3V or above 24V are not compatible. Additionally, the maximum operating temperature is 85°C versus 125°C for the original part.

Q: Are all substitute parts available in the same package?

A: Yes. All listed substitutes use the TO-220-5 package with formed leads, ensuring mechanical and pin compatibility for through-hole PCB mounting.

Q: Why is the LM2931ACTV classified as obsolete?

A: The LM2931ACTV is an older onsemi product. The LM2931ACTVG represents the updated equivalent with improved compliance certifications. For new designs, the Texas Instruments LM2931CT/NOPB offers active product status with enhanced protection features.

Q: What protection features differ between the main part and substitutes?

A: The LM2931ACTV and LM2931ACTVG provide over current and over temperature protection. The LM2931CT/NOPB adds reverse polarity and short circuit protection in addition to over temperature protection.