MIC5259-1.8BML-TR Equivalent & Substitute Parts

Part Overview

The MIC5259-1.8BML-TR is a linear voltage regulator IC from Microchip Technology designed for positive fixed 1.8V output applications with 300mA current capacity. This device is packaged in a 6-DFN (2x2) surface mount configuration and includes integrated protection features for over-current, over-temperature, and under-voltage lockout conditions. The part is currently discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing design support and procurement.

Substiute Parts

MIC5259-1.8BML-TR

Microchip TechnologyIn Stock: 957MIC5259-1.8BML-TR Datasheet

Current PartRFQ

MIC5259-1.8YML-TR

Microchip TechnologyIn Stock: 786MIC5259-1.8YML-TR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MIC5259-1.8BML-TR is determined by strict equivalence across the following critical parameters:

• Output voltage: 1.8V fixed
• Maximum output current: 300mA
• Maximum input voltage: 6V
• Dropout voltage: 0.55V @ 300mA
• Package type: 6-DFN (2x2) with exposed pad
• Protection features: Over-current, over-temperature, and UVLO
• Control features: Enable function
• Operating temperature range: -40°C ~ 125°C

The MIC5259-1.8YML-TR qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary difference is packaging format (Cut Tape vs. Tape & Reel) and product status (Active vs. Discontinued).

Parameter Comparison

Engineering Selection Recommendations

The MIC5259-1.8YML-TR is a direct functional equivalent to the MIC5259-1.8BML-TR with identical electrical performance and package specifications. Selection between these parts should be based on the following factors:

Product Status: The MIC5259-1.8YML-TR carries Active status, ensuring continued availability and manufacturer support, whereas the original part is discontinued. For new designs or ongoing production, the active substitute is the appropriate choice.

Compliance Certification: The MIC5259-1.8YML-TR is ROHS3 compliant, meeting current environmental regulations. The original part is RoHS non-compliant. Applications subject to RoHS requirements must use the substitute part.

Packaging Format: The MIC5259-1.8BML-TR is supplied in Tape & Reel format, while the MIC5259-1.8YML-TR is supplied in Cut Tape format. Packaging selection depends on procurement volume and assembly line requirements. Both formats contain identical die and electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the MIC5259-1.8YML-TR replace the MIC5259-1.8BML-TR in existing designs?

A: Yes. Both parts are electrically identical with matching output voltage (1.8V), output current (300mA), dropout voltage (0.55V @ 300mA), protection features, and package configuration (6-DFN 2x2). PCB layout and schematic connections require no modification.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) packaging supplies components on tape segments cut to specific lengths, typically for lower volumes or manual assembly. The internal component and electrical performance are identical.

Q: Why is the original part discontinued?

A: Product discontinuation decisions are made by manufacturers based on market demand, product line optimization, and technology transitions. The MIC5259-1.8YML-TR remains in active production with identical specifications, providing continuity for applications requiring this voltage regulator.

Q: Does the RoHS compliance difference affect electrical performance?

A: No. RoHS compliance refers to the absence of restricted substances in manufacturing and packaging materials. Electrical performance, thermal characteristics, and reliability are unaffected. RoHS3 compliance is a regulatory requirement for many applications and markets.

Q: Are there any thermal or reliability differences between these parts?

A: No. Both parts share identical die, thermal characteristics, operating temperature range (-40°C ~ 125°C), and protection features (over-current, over-temperature, UVLO). Reliability and thermal performance are equivalent.

Q: Can I use either part interchangeably in my assembly process?

A: Yes, with consideration for packaging format. If your assembly line is configured for Tape & Reel input, the MIC5259-1.8BML-TR is appropriate. If configured for Cut Tape or manual placement, the MIC5259-1.8YML-TR is suitable. Electrical and mechanical compatibility is identical.