MIC502YN Equivalent & Substitute Parts

Part Overview

The MIC502YN is a Brushless DC (BLDC) motor driver controller manufactured by Microchip Technology, designed for fan control applications. Operating across a 4V to 13.2V supply voltage range, this through-hole 8-DIP component functions as a speed controller with pre-driver low-side output configuration using bipolar technology.

The MIC502YN is classified as obsolete. Locating equivalent or substitute components is necessary to support legacy system maintenance, design updates, or when original inventory becomes unavailable. The TC647BEPA serves as the manufacturer-recommended substitute, though with modified electrical specifications suitable for lower voltage applications.

Substiute Parts

MIC502YN

Microchip TechnologyIn Stock: 931MIC502YN Datasheet

Current PartRFQ

TC647BEPA

Microchip TechnologyIn Stock: 912TC647BEPA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MIC502YN is determined by the following critical parameters:

• Motor Type: Must support Brushless DC (BLDC) motor control
• Function: Must provide speed controller functionality
• Output Configuration: Must feature pre-driver low-side output
• Interface: Must use parallel interface
• Package / Case: Must be 8-DIP (0.300", 7.62mm) form factor
• Mounting Type: Must support through-hole mounting
• Operating Temperature Range: Must maintain -40°C ~ 85°C operational capability
• Compliance: Must maintain ROHS3 compliance and MSL 1 rating

The TC647BEPA meets all structural and functional substitution criteria. The primary difference lies in the supply voltage specification: the TC647BEPA operates within a 3V to 5.5V range, which is narrower than the MIC502YN's 4V to 13.2V range. This voltage differential requires circuit-level evaluation during substitution planning.

Parameter Comparison

Engineering Selection Recommendations

The TC647BEPA is the manufacturer-designated substitute for the MIC502YN. Both components maintain identical compliance certifications (ROHS3, MSL 1) and share the same operating temperature range (-40°C ~ 85°C). The TC647BEPA carries active product status, ensuring ongoing availability and support from Microchip Technology.

The primary consideration during substitution is the supply voltage specification. The MIC502YN accommodates 4V to 13.2V operation, while the TC647BEPA operates within 3V to 5.5V. Applications requiring supply voltages above 5.5V cannot use the TC647BEPA without circuit redesign. Applications operating within the 4V to 5.5V overlap range are suitable for direct substitution, provided pinout compatibility is verified against application schematics.

Frequently Asked Questions (FAQ)

Q: Can the TC647BEPA replace the MIC502YN in all applications?

A: The TC647BEPA is functionally equivalent for BLDC fan controller applications within the 4V to 5.5V supply voltage range. Applications requiring supply voltages above 5.5V require alternative solutions or circuit modification.

Q: Are the pinouts identical between MIC502YN and TC647BEPA?

A: Both components use the 8-DIP (0.300", 7.62mm) package. Pinout compatibility must be verified against the specific application schematic and component datasheets before substitution.

Q: What is the difference in technology between these parts?

A: The MIC502YN uses bipolar technology. The TC647BEPA technology specification is not provided in the available data. Consult Microchip Technology datasheets for detailed technology comparisons.

Q: Why is the MIC502YN obsolete?

A: Product status reflects Microchip Technology's lifecycle management. The TC647BEPA, as an active product, represents the current generation equivalent for this application category.

Q: Are both parts RoHS compliant?

A: Yes. Both the MIC502YN and TC647BEPA are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What supply voltage range should I use for substitution?

A: For direct substitution, operate within the overlapping voltage range of 4V to 5.5V. This ensures both the original specification (MIC502YN minimum 4V) and substitute specification (TC647BEPA maximum 5.5V) are satisfied.