LM2931CDR2G Equivalent & Substitute Parts

Part Overview

The LM2931CDR2G is an active linear voltage regulator IC from onsemi, classified as a Power Management (PMIC) component. This positive adjustable regulator delivers 100mA output current in an 8-SOIC surface mount package. The device is currently in active production status with 10,200 units in stock. Alternative part numbers may be required due to packaging availability, supply chain constraints, or specific application requirements such as automotive qualification or alternative manufacturer sourcing.

Substiute Parts

LM2931CDR2G

onsemiIn Stock: 10290LM2931CDR2G Datasheet

Current PartRFQ

NCV2931ACDR2G

onsemiIn Stock: 19684NCV2931ACDR2G Datasheet

Parametric EquivalentRFQ

NCV2931CDR2G

onsemiIn Stock: 2095NCV2931CDR2G Datasheet

Parametric EquivalentRFQ

LM2931CM/NOPB

Texas InstrumentsIn Stock: 3774LM2931CM/NOPB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM2931CDR2G are classified based on electrical parameter equivalence and packaging compatibility. The critical parameters determining substitution eligibility are:

Electrical Equivalence Criteria:

• Output Configuration: Positive
• Output Type: Adjustable
• Voltage - Input (Max): 26V
• Voltage - Output (Min/Fixed): 2.7V minimum
• Voltage - Output (Max): 29.5V maximum
• Current - Output: 100mA
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

Parametric Equivalent Parts maintain identical electrical specifications and differ only in packaging format (Cut Tape vs. Tape & Reel) or manufacturer qualification level (automotive vs. standard grade). These parts are direct functional replacements.

Similar Parts share the same base functionality and package but may have minor variations in secondary parameters such as dropout voltage, quiescent current, or maximum supply current. These require application-level verification before substitution.

Parameter Comparison

Engineering Selection Recommendations

Parametric Equivalent Selection (NCV2931ACDR2G, NCV2931CDR2G):

The NCV2931ACDR2G and NCV2931CDR2G are parametric equivalents of the LM2931CDR2G with identical electrical specifications. Both are manufactured by onsemi and carry AEC-Q100 automotive qualification. Selection between these parts depends on packaging requirements: NCV2931ACDR2G is supplied in Tape & Reel format with higher inventory availability (19,610 units), while NCV2931CDR2G is supplied in Cut Tape format with lower inventory (2,006 units). Both maintain the full operating temperature range of -40°C to 125°C and identical voltage/current ratings.

Similar Part Selection (LM2931CM/NOPB):

The LM2931CM/NOPB from Texas Instruments shares the same base functionality and 8-SOIC package but exhibits parameter variations that require application verification. Key differences include: reduced maximum output voltage (24V vs. 29.5V), higher minimum output voltage (3V vs. 2.7V), improved dropout voltage (0.3V vs. 0.6V), elevated maximum supply current (15mA vs. 6mA), and reduced maximum operating temperature (85°C vs. 125°C). This part is suitable only for applications where the output voltage range 3V to 24V is acceptable and operating temperatures do not exceed 85°C.

All substitute parts maintain ROHS3 compliance and active production status, ensuring long-term availability and supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can NCV2931ACDR2G replace LM2931CDR2G directly?

A: Yes. The NCV2931ACDR2G is a parametric equivalent with identical electrical specifications. The primary difference is packaging format (Tape & Reel vs. Cut Tape & Digi-Reel) and automotive qualification (AEC-Q100). Both parts are pin-compatible and functionally interchangeable in the 8-SOIC package.

Q: What is the difference between NCV2931ACDR2G and NCV2931CDR2G?

A: Both are parametric equivalents with identical electrical specifications and automotive qualification. The difference is packaging: NCV2931ACDR2G is supplied in Tape & Reel format, while NCV2931CDR2G is supplied in Cut Tape format. Selection depends on assembly process requirements and inventory availability.

Q: Can LM2931CM/NOPB be used as a direct replacement?

A: LM2931CM/NOPB is a similar part, not a parametric equivalent. It shares the same package and base functionality but has parameter variations. Substitution requires verification that your application operates within the constraints: output voltage range 3V to 24V (vs. 2.7V to 29.5V), maximum operating temperature 85°C (vs. 125°C), and higher supply current draw (15mA vs. 6mA). Use only if these parameters are compatible with your design.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed parts—LM2931CDR2G, NCV2931ACDR2G, NCV2931CDR2G, and LM2931CM/NOPB—are ROHS3 compliant and suitable for applications requiring RoHS certification.

Q: Which substitute part has the best availability?

A: NCV2931ACDR2G has the highest inventory at 19,610 units in stock, followed by LM2931CDR2G (10,200 units), LM2931CM/NOPB (3,752 units), and NCV2931CDR2G (2,006 units).

Q: Do the substitute parts require different PCB layouts?

A: No. All parts use the identical 8-SOIC (0.154", 3.90mm Width) package and surface mount configuration. PCB layouts and footprints are interchangeable.

Q: What is the significance of AEC-Q100 qualification on NCV2931 parts?

A: AEC-Q100 qualification indicates the parts meet automotive industry reliability and quality standards. This qualification is relevant only if your application requires automotive-grade components. For non-automotive applications, standard-grade parts are acceptable.