MIC2941ABU TR Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The MIC2941ABU TR is a linear voltage regulator IC from Microchip Technology designed for positive adjustable output applications. It delivers 1.25A output current with adjustable voltage regulation from 1.24V to 26V, housed in a TO-263-5 surface mount package. The device includes integrated protection features for over-current, over-temperature, and reverse polarity conditions.

The MIC2941ABU TR is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support long-term product support for applications currently using this regulator.

Key Parameters

Parameter	Value
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Output Configuration	Positive
Output Type	Adjustable
Number of Regulators	1
Voltage - Input (Max)	26V
Voltage - Output (Min/Fixed)	1.24V
Voltage - Output (Max)	26V
Current - Output	1.25A
Voltage Dropout (Max)	0.6V @ 1.25A
Current - Quiescent (Iq)	500 µA
Current - Supply (Max)	70 mA
Control Features	Enable
Protection Features	Over Current, Over Temperature, Reverse Polarity
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Supplier Device Package	TO-263-5
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the MIC2941ABU TR is determined by electrical and mechanical parameter alignment within the linear voltage regulator category. The following parameters establish substitution eligibility:

Critical Electrical Parameters:

Output configuration (Positive)
Output type (Adjustable)
Voltage range (Input Max: 26V; Output Min/Fixed: 1.24V; Output Max: 26V)
Current rating (1.25A output)
Voltage dropout specification (0.6V @ 1.25A)
Quiescent current (500 µA)
Protection features (Over Current, Over Temperature, Reverse Polarity)
Operating temperature range (-40°C ~ 125°C)

Critical Mechanical Parameters:

Mounting type (Surface Mount)
Package type (TO-263-5)
Pin configuration (5 Leads + Tab)

The MIC2941AWU-TR meets all critical electrical and mechanical parameters, establishing it as a parametric equivalent. The primary distinction is product status and compliance certification.

Parameter Comparison

Parameter	MIC2941ABU TR	MIC2941AWU-TR
Manufacturer	Microchip Technology	Microchip Technology
Output Configuration	Positive	Positive
Output Type	Adjustable	Adjustable
Voltage - Input (Max)	26V	26V
Voltage - Output (Min/Fixed)	1.24V	1.24V
Voltage - Output (Max)	26V	26V
Current - Output	1.25A	1.25A
Voltage Dropout (Max)	0.6V @ 1.25A	0.6V @ 1.25A
Current - Quiescent (Iq)	500 µA	500 µA
Current - Supply (Max)	70 mA	70 mA
Control Features	Enable	Enable
Protection Features	Over Current, Over Temperature, Reverse Polarity	Over Current, Over Temperature, Reverse Polarity
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Supplier Device Package	TO-263-5	TO-263-5
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The MIC2941AWU-TR is the direct substitute for the MIC2941ABU TR based on complete electrical and mechanical parameter alignment. Selection between these parts should be determined by compliance and availability requirements:

MIC2941ABU TR: Obsolete status with RoHS non-compliant certification. Use only for legacy system maintenance or repair where original part specifications are mandated.

MIC2941AWU-TR: Active product status with ROHS3 compliance certification. Recommended for new designs, production continuity, and applications requiring current regulatory compliance. Higher inventory availability (2230 Pcs vs. 997 Pcs) supports supply chain reliability.

Both parts share identical electrical performance characteristics, protection features, and thermal specifications, ensuring functional interchangeability within the TO-263-5 package footprint.

Frequently Asked Questions (FAQ)

Q: Can MIC2941AWU-TR replace MIC2941ABU TR in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters including voltage range, current rating, dropout voltage, protection features, and package configuration. The MIC2941AWU-TR is the active production equivalent.

Q: What is the difference between these part numbers?

A: The primary differences are product status and compliance certification. MIC2941ABU TR is obsolete and RoHS non-compliant. MIC2941AWU-TR is active production and ROHS3 compliant. Electrical and mechanical specifications are identical.

Q: Are the packages physically compatible?

A: Yes. Both parts use the TO-263-5 package (D2PAK with 5 Leads + Tab). Pin configuration and footprint are identical, allowing direct PCB substitution without layout modifications.

Q: Which part should be selected for new designs?

A: MIC2941AWU-TR is the appropriate selection for new designs due to active product status and ROHS3 compliance certification. It provides supply chain continuity and regulatory compliance assurance.

Q: Is there any performance difference between these regulators?

A: No. Both parts deliver identical electrical performance: 1.25A output current, adjustable voltage from 1.24V to 26V, 0.6V maximum dropout at rated current, 500 µA quiescent current, and comprehensive protection features across the -40°C to 125°C operating range.

Q: What is the moisture sensitivity level for these parts?

A: Both parts have MSL 3 rating with a 168-hour floor life. Standard moisture control procedures during storage and handling apply to both components.

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