MIC29501-5.0BU TR Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The MIC29501-5.0BU TR is a linear voltage regulator IC from Microchip Technology designed for positive fixed 5V output at 5A current capacity in a TO-263-5 surface mount package. This device is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The regulator integrates over-current, over-temperature, reverse polarity, and transient voltage protection features suitable for industrial and commercial power management applications.

Substiute Parts

MIC29501-5.0BU TR

Microchip TechnologyIn Stock: 1140MIC29501-5.0BU TR Datasheet

Current PartRFQ

MIC29501-5.0WU-TR

Microchip TechnologyIn Stock: 2234MIC29501-5.0WU-TR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MIC29501-5.0BU TR is determined by strict equivalence across the following critical parameters:

• Output voltage specification: 5V fixed
• Output current rating: 5A minimum
• Input voltage tolerance: 26V maximum
• Voltage dropout characteristics: 0.6V @ 5A
• Package compatibility: TO-263-5 surface mount
• Protection feature set: Over-current, over-temperature, reverse polarity, and transient voltage protection
• Operating temperature range: -40°C to 125°C
• Control interface: Enable function

The MIC29501-5.0WU-TR meets all these criteria and is classified as an active product, providing production availability and compliance advantages over the obsolete main part.

Parameter Comparison

Engineering Selection Recommendations

The MIC29501-5.0WU-TR is the direct substitute for the MIC29501-5.0BU TR based on identical electrical and mechanical specifications. The substitute part offers the additional advantage of active product status, ensuring continued availability and supply chain reliability. The MIC29501-5.0WU-TR also provides ROHS3 compliance, meeting modern environmental and regulatory requirements where the original part does not. Both parts share identical protection features, thermal characteristics, and package footprints, enabling direct replacement in existing PCB designs without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the MIC29501-5.0WU-TR be used as a direct replacement for the MIC29501-5.0BU TR?

A: Yes. Both parts are manufactured by Microchip Technology and share identical electrical specifications including 5V output, 5A current capacity, 0.6V dropout voltage, and TO-263-5 package configuration. The substitute part is pin-compatible and functionally equivalent.

Q: What is the difference between the MIC29501-5.0BU TR and MIC29501-5.0WU-TR?

A: The primary differences are product status and regulatory compliance. The MIC29501-5.0BU TR is obsolete, while the MIC29501-5.0WU-TR is active. The substitute part is ROHS3 compliant, whereas the original is RoHS non-compliant. All electrical and thermal parameters remain identical.

Q: Are there any PCB layout considerations when substituting these parts?

A: No. Both parts use the identical TO-263-5 package with the same pin configuration, lead spacing, and thermal tab dimensions. Existing PCB designs require no modification for this substitution.

Q: What protection features are included in both parts?

A: Both the MIC29501-5.0BU TR and MIC29501-5.0WU-TR include over-current protection, over-temperature protection, reverse polarity protection, and transient voltage protection. The enable control feature is present on both devices.

Q: Is the operating temperature range the same for both parts?

A: Yes. Both parts operate across the -40°C to 125°C temperature range with identical thermal performance and voltage dropout characteristics at rated current.

Q: Why should I choose the MIC29501-5.0WU-TR over the MIC29501-5.0BU TR?

A: The MIC29501-5.0WU-TR is the recommended choice due to active product status, ensuring long-term availability and supply continuity. ROHS3 compliance also satisfies modern environmental regulations and customer requirements.