MIC2544-1BMM Equivalent & Substitute Parts

Part Overview

The MIC2544-1BMM is a Power Switch/Driver IC from Microchip Technology, designed for USB switching applications with 1:1 N-Channel output configuration. This high-side switch delivers 1.5A maximum output current with integrated current limiting and over-temperature protection. The device operates across a 2.7V to 5.5V load voltage range and features a status flag for system monitoring.

The MIC2544-1BMM is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Substiute Parts

MIC2544-1BMM

Microchip TechnologyIn Stock: 3911MIC2544-1BMM Datasheet

Current PartRFQ

MIC2544-1YMM

Microchip TechnologyIn Stock: 1590MIC2544-1YMM Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MIC2544-1BMM is determined by strict equivalence across the following critical parameters:

• Switch topology: High-side N-Channel configuration with 1:1 input-to-output ratio
• Electrical performance: 1.5A maximum output current, 80mOhm typical on-resistance, 2.7V to 5.5V load voltage range
• Protection features: Current limiting (adjustable) and over-temperature fault protection
• Interface: On/Off control with status flag output
• Package compatibility: 8-MSOP surface mount form factor with identical pinout and mechanical dimensions

The MIC2544-1YMM meets all these criteria and is classified as a direct substitute. The primary difference is packaging format (Tube vs. Bulk) and product status (Active vs. Discontinued).

Parameter Comparison

Engineering Selection Recommendations

The MIC2544-1YMM is the direct functional equivalent of the MIC2544-1BMM. Both devices share identical electrical specifications, protection features, and package form factor. Selection between these parts should be based on the following criteria:

Product Status: The MIC2544-1BMM is discontinued at DiGi Electronics, making the MIC2544-1YMM the recommended choice for new designs and ongoing production requirements. The MIC2544-1YMM maintains active product status with confirmed inventory availability.

Compliance Requirements: The MIC2544-1YMM carries ROHS3 compliance certification, whereas the MIC2544-1BMM is RoHS non-compliant. Applications subject to RoHS regulations must use the MIC2544-1YMM. For legacy systems or applications without RoHS requirements, either part is electrically equivalent.

Packaging Format: The MIC2544-1BMM is supplied in Bulk packaging, while the MIC2544-1YMM is supplied in Tube packaging. Packaging selection depends on production volume and handling requirements but does not affect electrical performance or compatibility.

Frequently Asked Questions (FAQ)

Q: Are the MIC2544-1BMM and MIC2544-1YMM pin-compatible?

A: Yes. Both devices use the 8-MSOP package with identical pinout and mechanical dimensions (0.118", 3.00mm Width). Direct PCB substitution is possible without layout modifications.

Q: What is the difference between Bulk and Tube packaging?

A: Bulk packaging is used for large-volume orders without individual component protection, while Tube packaging provides organized component storage in plastic tubes. Both contain the same die and offer identical electrical performance. Packaging selection is based on production volume and handling requirements.

Q: Can I use the MIC2544-1YMM as a replacement for the discontinued MIC2544-1BMM?

A: Yes. The MIC2544-1YMM is a direct substitute with identical electrical specifications, protection features, and package compatibility. The primary advantage is active product status and ROHS3 compliance.

Q: Are there any differences in electrical performance between these parts?

A: No. Both parts deliver 1.5A maximum output current, 80mOhm typical on-resistance, and operate across the 2.7V to 5.5V load voltage range. Fault protection, interface characteristics, and operating temperature range are identical.

Q: What compliance certifications apply to each part?

A: The MIC2544-1YMM is ROHS3 compliant and REACH unaffected. The MIC2544-1BMM is RoHS non-compliant but REACH unaffected. Both carry EAR99 export classification and HTSUS code 8542.39.0001.