MIC5259-1.5BML TR Equivalent & Substitute Parts

Part Overview

The MIC5259-1.5BML TR is a linear voltage regulator IC from Microchip Technology designed for positive fixed 1.5V output applications with 300mA current capacity in a 6-DFN (2x2) surface mount package. This part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and production continuity. Substitute parts must maintain electrical compatibility across input voltage, output voltage, current capacity, dropout voltage, and thermal performance parameters while accommodating the obsolete status of the original component.

Substiute Parts

MIC5259-1.5BML TR

Microchip TechnologyIn Stock: 907MIC5259-1.5BML TR Datasheet

Current PartRFQ

MIC5259-1.5YML-TR

Microchip TechnologyIn Stock: 873MIC5259-1.5YML-TR Datasheet

DirectRFQ

MIC5247-1.5YML-TR

Microchip TechnologyIn Stock: 5221MIC5247-1.5YML-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MIC5259-1.5BML TR are identified based on strict electrical and mechanical compatibility criteria. The primary substitution logic is based on the following allowed parameters:

Direct Electrical Compatibility (Group 1):

• Output voltage: 1.5V fixed
• Output current: 300mA
• Input voltage maximum: 6V
• Dropout voltage: 0.55V @ 300mA
• Package: 6-DFN (2x2)
• Control features: Enable function
• Protection: Over Current, Over Temperature, UVLO

Functional Compatibility with Current Derating (Group 2):

• Output voltage: 1.5V fixed
• Output current: 150mA (reduced from 300mA)
• Input voltage maximum: 6V
• Package: 6-DFN (2x2)
• Control features: Enable function
• Protection: Over Current, Over Temperature, UVLO

The MIC5259-1.5YML-TR qualifies as a direct substitute with identical electrical specifications and active product status. The MIC5247-1.5YML-TR qualifies as a functional substitute with reduced output current capacity (150mA vs 300mA) and improved dropout voltage performance (0.15V @ 150mA).

Parameter Comparison

Engineering Selection Recommendations

MIC5259-1.5YML-TR (Direct Substitute - Recommended for Direct Replacement)

This part provides identical electrical specifications to the MIC5259-1.5BML TR with the advantage of active product status and ROHS3 compliance. The MIC5259-1.5YML-TR is the preferred substitute when the original 300mA output current requirement must be maintained. Both parts share identical package geometry, pin configuration, and electrical performance characteristics, enabling direct PCB-level substitution without circuit redesign.

MIC5247-1.5YML-TR (Functional Substitute - For Current-Reduced Applications)

This part is suitable for applications where output current requirements do not exceed 150mA. The MIC5247-1.5YML-TR offers superior dropout voltage performance (0.15V @ 150mA compared to 0.55V @ 300mA) and active product status with ROHS3 compliance. Selection of this substitute requires confirmation that the application load current does not exceed 150mA. The identical package and pin configuration enable direct PCB substitution for current-compatible designs.

Both substitute parts maintain compliance with REACH regulations and carry identical moisture sensitivity levels (MSL 1 - Unlimited) as the original component.

Frequently Asked Questions (FAQ)

Q: Can the MIC5259-1.5YML-TR be used as a direct replacement for the MIC5259-1.5BML TR?

A: Yes. The MIC5259-1.5YML-TR provides identical electrical specifications including 1.5V fixed output, 300mA output current, 6V maximum input voltage, and 0.55V dropout voltage at 300mA. Both parts use the 6-DFN (2x2) package with identical pin configuration. The primary difference is product status: MIC5259-1.5YML-TR is active while the original is obsolete.

Q: What is the key limitation of the MIC5247-1.5YML-TR as a substitute?

A: The MIC5247-1.5YML-TR has a maximum output current of 150mA, compared to 300mA for the MIC5259-1.5BML TR. This part is suitable only for applications where the load current does not exceed 150mA. All other electrical parameters, including output voltage (1.5V), input voltage maximum (6V), and package type (6-DFN 2x2), remain compatible.

Q: Are the package dimensions identical across all three parts?

A: Yes. All three parts use the 6-VDFN Exposed Pad, 6-MLF® package with 6-DFN (2x2) supplier device package designation. PCB footprints and mounting requirements are identical, enabling direct substitution at the board level.

Q: What is the difference in RoHS compliance between the main part and substitutes?

A: The MIC5259-1.5BML TR is RoHS non-compliant. Both substitute parts (MIC5259-1.5YML-TR and MIC5247-1.5YML-TR) are ROHS3 compliant. For applications requiring RoHS compliance, either substitute part is acceptable.

Q: Do all three parts have the same thermal operating range?

A: Yes. All three parts operate across the temperature range of -40°C to 125°C with identical quiescent current (150 µA) and protection features (Over Current, Over Temperature, Under Voltage Lockout).

Q: Which substitute should be selected for new designs?

A: For new designs requiring 300mA output current, use MIC5259-1.5YML-TR. For designs where 150mA output current is sufficient, MIC5247-1.5YML-TR offers superior dropout voltage performance. Both parts are active products with ROHS3 compliance, making either suitable for production designs.