MIC39150-2.5WU-TR Equivalent & Substitute Parts

Part Overview

The MIC39150-2.5WU-TR is a linear voltage regulator IC manufactured by Microchip Technology, designed to deliver a fixed 2.5V output at 1.5A maximum current. This Surface Mount device in TO-263-3 packaging is classified as Active product status and is fully RoHS3 compliant. Linear voltage regulators of this specification are essential in applications requiring stable, low-noise power delivery with thermal and reverse polarity protection. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained within the allowed parameter tolerances for this product category.

Substiute Parts

MIC39150-2.5WU-TR

Microchip TechnologyIn Stock: 833MIC39150-2.5WU-TR Datasheet

Current PartRFQ

SPX29300T-L-2-5/TR

MaxLinear, Inc.In Stock: 5497SPX29300T-L-2-5/TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MIC39150-2.5WU-TR are qualified based on the following critical parameters:

Fixed output voltage of 2.5V matching the main part specification. Input voltage maximum rating of 16V or greater. Surface Mount package type TO-263-3 (D2PAK) mechanical compatibility. Operating temperature range of -40°C to 125°C or wider. Active product status ensuring ongoing availability and support. RoHS compliance status (RoHS3 or RoHS Compliant). Protection features including Over Current and Reverse Polarity protection as minimum requirements.

The SPX29300T-L-2-5/TR qualifies as a substitute part because it maintains all critical electrical parameters, identical package form factor, matching temperature range, and equivalent protection architecture. The higher output current rating (3A vs. 1.5A) and slightly higher dropout voltage (0.8V @ 3A vs. 0.5V @ 1.5A) do not disqualify substitution in applications where the MIC39150-2.5WU-TR is specified, as the substitute provides equal or superior capability within the allowed parameter envelope.

Parameter Comparison

Engineering Selection Recommendations

Both the MIC39150-2.5WU-TR and SPX29300T-L-2-5/TR maintain Active product status, ensuring continued manufacturing support and supply chain stability. Both devices are RoHS compliant, meeting environmental and regulatory requirements for modern electronics manufacturing. The identical operating temperature range (-40°C to 125°C) and matching TO-263-3 package form factor ensure mechanical and thermal compatibility in existing PCB designs.

The SPX29300T-L-2-5/TR provides higher output current capability (3A) compared to the MIC39150-2.5WU-TR (1.5A), making it suitable for applications requiring increased current headroom. The SPX29300T-L-2-5/TR includes Transient Voltage protection in addition to Over Current and Reverse Polarity protection, providing enhanced transient suppression. Selection between these parts should be based on application current requirements and desired protection feature set, with both parts meeting the core electrical and mechanical specifications for 2.5V linear regulation in TO-263-3 packaging.

Frequently Asked Questions (FAQ)

Q: Can the SPX29300T-L-2-5/TR directly replace the MIC39150-2.5WU-TR in existing designs?

A: Yes. Both parts deliver 2.5V fixed output, operate across -40°C to 125°C, use identical TO-263-3 package geometry, and include Over Current and Reverse Polarity protection. PCB layout and thermal management remain unchanged.

Q: What is the significance of the higher 3A output current on the SPX29300T-L-2-5/TR?

A: The SPX29300T-L-2-5/TR can supply up to 3A, compared to 1.5A for the MIC39150-2.5WU-TR. This provides additional current capacity for applications with higher power demands, though both parts are electrically compatible at the 1.5A operating point.

Q: How do the dropout voltage specifications compare?

A: The MIC39150-2.5WU-TR specifies 0.5V dropout at 1.5A, while the SPX29300T-L-2-5/TR specifies 0.8V dropout at 3A. At equivalent current levels, the MIC39150-2.5WU-TR exhibits lower dropout. Both values remain within acceptable ranges for typical 2.5V regulation applications.

Q: Are both parts available in the same packaging format?

A: Yes. Both the MIC39150-2.5WU-TR and SPX29300T-L-2-5/TR are supplied in Tape & Reel (TR) format in TO-263-3 package, ensuring identical handling, storage, and assembly compatibility.

Q: What protection features distinguish these regulators?

A: The MIC39150-2.5WU-TR includes Over Current, Over Temperature, and Reverse Polarity protection. The SPX29300T-L-2-5/TR includes Over Current, Reverse Polarity, and Transient Voltage protection. Both provide core protection; the SPX29300T-L-2-5/TR adds transient suppression capability.

Q: Do both parts meet current RoHS compliance requirements?

A: Yes. The MIC39150-2.5WU-TR is RoHS3 Compliant, and the SPX29300T-L-2-5/TR is RoHS Compliant. Both meet environmental and regulatory standards for electronics manufacturing.