MIC3975BMM Equivalent & Substitute Parts

Part Overview

The MIC3975BMM is a linear voltage regulator IC from Microchip Technology designed for positive adjustable output applications. It delivers 750mA output current in an 8-MSOP surface mount package with integrated protection features including over-current, over-temperature, and reverse polarity protection. The device is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and production requirements.

Substiute Parts

MIC3975BMM

Microchip TechnologyIn Stock: 1523MIC3975BMM Datasheet

Current PartRFQ

MIC3975YMM

Microchip TechnologyIn Stock: 3144MIC3975YMM Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The MIC3975BMM can be substituted with the MIC3975YMM based on strict electrical and mechanical parameter equivalence. Both parts share the identical base product number (MIC3975) and maintain complete compatibility across all critical specifications:

Key Parameters Determining Substitution:

• Output configuration (Positive)
• Output type (Adjustable)
• Voltage ratings (Input Max: 16V, Output Min/Fixed: 1.24V, Output Max: 16V)
• Dropout voltage (0.5V @ 750mA)
• Output current (750mA)
• Control features (Enable)
• Protection features (Over Current, Over Temperature, Reverse Polarity)
• Operating temperature range (-40°C ~ 125°C)
• Package specification (8-MSOP)
• Moisture sensitivity level (MSL 1)

The substitution is valid because both parts are manufactured by Microchip Technology and maintain identical electrical performance and physical form factor specifications.

Parameter Comparison

Engineering Selection Recommendations

The MIC3975YMM is the direct substitute for the discontinued MIC3975BMM. Both parts maintain identical electrical specifications and physical packaging, ensuring pin-for-pin compatibility and functional equivalence in circuit applications.

The MIC3975YMM offers the additional advantage of active product status with ROHS3 compliance, making it the preferred selection for new designs and ongoing production where regulatory compliance is required. The MIC3975BMM, while functionally equivalent, carries RoHS non-compliant status and discontinued availability, limiting its use to legacy applications or existing inventory management.

Frequently Asked Questions (FAQ)

Q: Are MIC3975BMM and MIC3975YMM pin-for-pin compatible? A: Yes. Both parts use the 8-MSOP package with identical pinout and electrical specifications, enabling direct substitution without circuit modification.

Q: What is the difference between the MIC3975BMM and MIC3975YMM? A: The primary differences are product status and regulatory compliance. The MIC3975YMM is currently active with ROHS3 compliance, while the MIC3975BMM is discontinued and RoHS non-compliant. All electrical and mechanical parameters remain identical.

Q: Can I use MIC3975YMM in place of MIC3975BMM in existing designs? A: Yes. The MIC3975YMM is a direct functional equivalent with identical voltage ratings, current output, protection features, and operating temperature range. No design changes are required.

Q: What packaging options are available for these parts? A: The MIC3975BMM is supplied in Bulk packaging, while the MIC3975YMM is supplied in Tube packaging. Both use the 8-MSOP physical form factor.

Q: Are there any compliance differences between these parts? A: Yes. The MIC3975YMM is ROHS3 compliant, while the MIC3975BMM is RoHS non-compliant. Both are REACH Unaffected and classified as EAR99 for export control purposes.

Q: What is the output current capability of these regulators? A: Both the MIC3975BMM and MIC3975YMM deliver 750mA maximum output current with a maximum dropout voltage of 0.5V at this current level.