MIC5191BML-TR Equivalent & Substitute Parts

Part Overview

The MIC5191BML-TR is a Linear Regulator Controller IC manufactured by Microchip Technology, designed for positive adjustable output applications. This single-output power management IC operates across an input voltage range of 1V to 5.5V with a supply current of 15mA and supports operating temperatures from -40°C to 125°C. The device is packaged in a 10-MLF® (3x3) surface mount configuration with an exposed pad.

The MIC5191BML-TR is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing design support and procurement. The primary substitute maintains identical electrical specifications and mechanical compatibility while offering improved availability and compliance status.

Substiute Parts

MIC5191BML-TR

Microchip TechnologyIn Stock: 976MIC5191BML-TR Datasheet

Current PartRFQ

MIC5191YML-TR

Microchip TechnologyIn Stock: 1186MIC5191YML-TR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MIC5191BML-TR is based on strict equivalence across the following critical parameters:

• Electrical Specifications: Identical supply current (15mA), input voltage range (1V ~ 5.5V), output configuration (1 positive adjustable output), and operating temperature range (-40°C ~ 125°C)
• Mechanical Compatibility: Same package type (10-MLF® 3x3), mounting method (surface mount), and pin configuration (10-VFDFN exposed pad)
• Manufacturer Consistency: Same manufacturer (Microchip Technology) ensures design continuity and technical support alignment
• Environmental Classification: Identical MSL rating (1 - Unlimited) and REACH status (REACH Unaffected)

The MIC5191YML-TR qualifies as a direct substitute based on these parameters. The primary difference is packaging format (Cut Tape vs. Tape & Reel) and compliance status, which do not affect electrical or mechanical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

The MIC5191YML-TR is a direct electrical and mechanical equivalent to the MIC5191BML-TR. Selection between these parts should be based on the following factors:

Compliance Requirements: The MIC5191YML-TR offers ROHS3 compliance, whereas the MIC5191BML-TR is RoHS non-compliant. For applications subject to RoHS directives or customer compliance mandates, the MIC5191YML-TR is the appropriate selection.

Packaging and Procurement: The MIC5191BML-TR is supplied in Tape & Reel format, while the MIC5191YML-TR is supplied in Cut Tape format. Packaging selection depends on production volume and assembly line requirements. Both formats are compatible with standard surface mount assembly processes.

Availability and Product Status: Both parts are listed as discontinued or obsolete, indicating limited future availability. Procurement decisions should account for current inventory levels and long-term supply chain planning.

Functional Interchangeability: Both parts are functionally identical across all electrical and thermal specifications. PCB layout, schematic design, and thermal management considerations remain unchanged between the two variants.

Frequently Asked Questions (FAQ)

Q: Are the MIC5191BML-TR and MIC5191YML-TR pin-compatible?

A: Yes. Both parts use the 10-MLF® (3x3) package with 10-VFDFN exposed pad configuration. Pin assignments, spacing, and PCB footprint requirements are identical.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel packaging is used for high-volume automated assembly, where components are supplied on continuous tape wound on reels. Cut Tape packaging provides individual tape segments, suitable for lower-volume production or manual assembly. Both formats contain the same component and are compatible with standard pick-and-place equipment.

Q: Can I substitute the MIC5191YML-TR for the MIC5191BML-TR in an existing design?

A: Yes, without design modifications. The electrical specifications, thermal performance, and mechanical dimensions are identical. No schematic or PCB layout changes are required.

Q: What does RoHS3 compliance mean for the MIC5191YML-TR?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting the use of specific hazardous materials in electrical and electronic equipment. This is relevant for applications subject to EU regulations or customer compliance specifications.

Q: Are both parts suitable for the full -40°C to 125°C operating temperature range?

A: Yes. Both the MIC5191BML-TR and MIC5191YML-TR are rated for identical operating temperatures from -40°C to 125°C and maintain specified electrical performance across this range.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and does not require special moisture control during storage or handling. No baking or desiccant storage is necessary prior to assembly.