MIC29202BU TR Linear Voltage Regulator - Equivalent & Substitute Parts

Part Overview

The MIC29202BU TR is a linear voltage regulator IC from Microchip Technology designed for positive adjustable output applications. This Surface Mount device delivers 400mA output current with adjustable voltage regulation from 1.24V to 26V, featuring integrated protection against load dump, over-current, and reverse polarity conditions. The part operates across an industrial temperature range of -40°C to 125°C and includes an enable control feature for power management applications.

The MIC29202BU TR carries an Obsolete product status. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications currently utilizing 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
Voltage Dropout (Max)	0.75V @ 400mA
Current - Output	400mA
Current - Quiescent (Iq)	300 µA
Current - Supply (Max)	12 mA
Control Features	Enable
Protection Features	Load Dump, Over Current, 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
Base Product Number	MIC29202

Substitute Part Grouping Explanation

Substitution eligibility for the MIC29202BU TR is determined by strict equivalence across the following critical parameters:

Output Configuration: Positive
Output Type: Adjustable
Voltage Range: Input (Max) 26V, Output (Min) 1.24V, Output (Max) 26V
Current Capacity: 400mA output, 300 µA quiescent, 12 mA supply (Max)
Dropout Voltage: 0.75V @ 400mA
Control Features: Enable function
Protection Features: Load Dump, Over Current, Reverse Polarity
Operating Temperature: -40°C ~ 125°C
Package: TO-263-5 (D2PAK, 5 Leads + Tab)
Mounting: Surface Mount

The MIC29202WU-TR meets all parametric equivalence criteria and is classified as a direct substitute based on identical electrical specifications and mechanical compatibility.

Parameter Comparison

Parameter	MIC29202BU TR	MIC29202WU-TR	Match
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	✓
Voltage Dropout (Max)	0.75V @ 400mA	0.75V @ 400mA	✓
Current - Output	400mA	400mA	✓
Current - Quiescent (Iq)	300 µA	300 µA	✓
Current - Supply (Max)	12 mA	12 mA	✓
Control Features	Enable	Enable	✓
Protection Features	Load Dump, Over Current, Reverse Polarity	Load Dump, Over Current, 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	✓
Product Status	Obsolete	Active	—
RoHS Status	RoHS non-compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

The MIC29202WU-TR is the direct parametric equivalent for the obsolete MIC29202BU TR. Both parts share identical electrical specifications, output characteristics, protection features, and mechanical packaging. The primary distinction lies in product status and compliance certification.

The MIC29202BU TR is classified as Obsolete, indicating discontinued manufacturing and limited availability. The MIC29202WU-TR maintains Active product status with current manufacturing support and improved supply chain availability.

Regarding regulatory compliance, the MIC29202BU TR carries RoHS non-compliant status, while the MIC29202WU-TR is ROHS3 Compliant. For applications subject to RoHS directives or environmental regulations, the MIC29202WU-TR provides compliance alignment. Both parts maintain REACH Unaffected status and share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Selection between these parts should prioritize the MIC29202WU-TR for new designs and ongoing production due to its Active status, improved availability, and enhanced compliance posture. The MIC29202BU TR remains suitable for legacy system maintenance where existing inventory is available.

Frequently Asked Questions (FAQ)

Q: Are the MIC29202BU TR and MIC29202WU-TR electrically interchangeable?

A: Yes. Both parts deliver identical electrical performance across all specified parameters including output voltage range (1.24V to 26V), output current (400mA), dropout voltage (0.75V @ 400mA), quiescent current (300 µA), and protection features (Load Dump, Over Current, Reverse Polarity).

Q: Can the MIC29202WU-TR be used as a direct replacement in existing designs using the MIC29202BU TR?

A: Yes. The MIC29202WU-TR is mechanically and electrically compatible. Both parts use identical TO-263-5 packaging (D2PAK with 5 Leads + Tab), Surface Mount configuration, and pin assignments. No circuit modifications are required.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging?

A: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® represent different supply formats for the same component. TR packaging provides continuous tape on a reel for automated assembly lines. Cut Tape & Digi-Reel® offers smaller quantity options with flexible reel formats. The electrical and mechanical specifications remain identical.

Q: Why is the MIC29202BU TR marked as Obsolete?

A: Obsolete status indicates that Microchip Technology has discontinued manufacturing of this specific part number variant. The MIC29202WU-TR represents the current active equivalent, ensuring continued availability and manufacturing support.

Q: Does the RoHS compliance difference affect functional performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical performance. Both parts function identically in circuit applications. The ROHS3 Compliant status of the MIC29202WU-TR provides regulatory alignment for applications subject to RoHS directives.

Q: Are there any thermal or reliability differences between these parts?

A: No. Both parts share identical operating temperature range (-40°C ~ 125°C), thermal characteristics, and protection features. Reliability and thermal performance are equivalent.

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