LM2931ACTVG Equivalent & Substitute Parts

Part Overview

The LM2931ACTVG is a linear voltage regulator IC featuring positive adjustable output with 100mA current capability in a TO-220-5 through-hole package. This device is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The LM2931ACTVG provides adjustable output voltage regulation from 2.7V to 29.5V with integrated over-current and over-temperature protection, suitable for applications requiring low-dropout linear regulation in legacy or retrofit scenarios.

Key Parameters

Parameter	Value
Manufacturer	onsemi
Base Product Number	LM2931
Output Configuration	Positive
Output Type	Adjustable
Number of Regulators	1
Voltage - Input (Max)	26V
Voltage - Output (Min/Fixed)	2.7V
Voltage - Output (Max)	29.5V
Current - Output	100mA
Voltage Dropout (Max)	0.6V @ 100mA
Operating Temperature	-40°C ~ 125°C
Protection Features	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the LM2931ACTVG is determined by electrical parameter equivalence across the LM2931 product family. The critical parameters defining substitutability are:

Output voltage range (2.7V to 29.5V adjustable)
Output current capability (100mA)
Input voltage rating (26V maximum)
Dropout voltage specification (0.6V @ 100mA)
Operating temperature range (-40°C ~ 125°C)
Protection features (over-current and over-temperature)
RoHS3 compliance and REACH unaffected status

The LM2931ACD2TR4G maintains identical electrical specifications while differing in package type and mounting technology. Both devices are manufactured by onsemi under the LM2931 base product number and provide equivalent functional performance for adjustable linear voltage regulation applications.

Parameter Comparison

Parameter	LM2931ACTVG	LM2931ACD2TR4G	Match
Manufacturer	onsemi	onsemi	✓
Base Product Number	LM2931	LM2931	✓
Output Configuration	Positive	Positive	✓
Output Type	Adjustable	Adjustable	✓
Number of Regulators	1	1	✓
Voltage - Input (Max)	26V	26V	✓
Voltage - Output (Min/Fixed)	2.7V	2.7V	✓
Voltage - Output (Max)	29.5V	29.5V	✓
Current - Output	100mA	100mA	✓
Voltage Dropout (Max)	0.6V @ 100mA	0.6V @ 100mA	✓
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	✓
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Mounting Type	Through Hole	Surface Mount	—
Package / Case	TO-220-5 Formed Leads	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	—
Product Status	Obsolete	Active	—

Engineering Selection Recommendations

The LM2931ACD2TR4G is electrically equivalent to the LM2931ACTVG across all specified functional parameters. Selection between these parts is determined by PCB design requirements and manufacturing process compatibility.

The LM2931ACTVG uses through-hole TO-220-5 packaging suitable for legacy designs and applications requiring manual assembly or high thermal dissipation through direct board contact. The LM2931ACD2TR4G employs surface-mount D2PAK-5 packaging, appropriate for modern automated assembly processes and space-constrained layouts.

The LM2931ACD2TR4G holds active product status with current manufacturing availability (1908 pcs in stock), whereas the LM2931ACTVG is obsolete (1137 pcs remaining inventory). Both devices maintain ROHS3 compliance and REACH unaffected certification, ensuring regulatory compliance for new applications.

Frequently Asked Questions (FAQ)

Q: Can the LM2931ACD2TR4G directly replace the LM2931ACTVG in existing designs?

A: Electrical substitution is complete. PCB layout modification is required due to package differences. The LM2931ACTVG uses through-hole TO-220-5 leads; the LM2931ACD2TR4G requires surface-mount D2PAK-5 footprint. Thermal performance and lead configuration differ between packages.

Q: What are the key electrical parameters that must match for substitution?

A: Output voltage range (2.7V–29.5V), output current (100mA), input voltage rating (26V), dropout voltage (0.6V @ 100mA), operating temperature (-40°C ~ 125°C), and protection features (over-current and over-temperature) must remain identical. All parameters match between these two parts.

Q: Are there compliance or certification differences between these parts?

A: Both parts are ROHS3 compliant and REACH unaffected. No compliance differences exist. The LM2931ACD2TR4G is active product status; the LM2931ACTVG is obsolete.

Q: What is the primary reason to select the LM2931ACD2TR4G over the LM2931ACTVG?

A: The LM2931ACD2TR4G is active product with ongoing manufacturing support and current inventory availability. The LM2931ACTVG is obsolete with limited remaining stock. For new designs, the LM2931ACD2TR4G ensures long-term supply continuity.

Q: Do package differences affect thermal performance?

A: Both packages provide thermal paths to ground. The TO-220-5 through-hole package uses direct board contact and lead conduction. The D2PAK-5 surface-mount package includes a thermal tab for enhanced heat dissipation. Thermal performance depends on PCB layout and copper area allocation in each design.

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