MP3115DT-LF-P Equivalent & Substitute Parts

Part Overview

The MP3115DT-LF-P is a boost switching regulator IC manufactured by Monolithic Power Systems Inc., designed for step-up voltage conversion applications. This device operates as a positive adjustable output regulator with a single output configuration, housed in a SOT-23-6 surface mount package. The part is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product roadmap. Alternative components are necessary for new design implementations and long-term supply chain continuity.

Substiute Parts

MP3115DT-LF-P

Monolithic Power Systems Inc.In Stock: 995MP3115DT-LF-P Datasheet

Current PartRFQ

TLV61220DBVR

Texas InstrumentsIn Stock: 65189TLV61220DBVR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MP3115DT-LF-P is determined by the following critical parameters:

• Topology & Function: Boost switching regulator with step-up conversion capability
• Output Configuration: Positive adjustable output with single output
• Package Compatibility: SOT-23-6 surface mount package for direct PCB replacement
• Electrical Specifications: Input voltage range, output voltage range, output current capacity, and switching frequency
• Synchronous Rectifier: Presence of integrated synchronous rectification for efficiency
• Operating Temperature Range: -40°C to 85°C ambient operation
• Compliance Standards: ROHS3 compliance and moisture sensitivity level

The TLV61220DBVR from Texas Instruments qualifies as a substitute based on matching topology, package, and core electrical parameters within acceptable operating ranges.

Parameter Comparison

Engineering Selection Recommendations

The TLV61220DBVR is suitable as a substitute for the MP3115DT-LF-P based on the following factors:

• Product Status Alignment: The TLV61220DBVR carries Active product status, making it appropriate for new design implementations where the MP3115DT-LF-P is restricted.
• Package Compatibility: Both devices utilize SOT-23-6 surface mount packaging, enabling direct PCB footprint compatibility without layout modifications.
• Compliance Certification: Both parts maintain ROHS3 compliance and identical moisture sensitivity levels, ensuring regulatory and environmental consistency.
• Electrical Performance: The TLV61220DBVR provides expanded input voltage range (0.7V to 5.5V) and output voltage range (1.8V to 5.5V) compared to the MP3115DT-LF-P, offering greater design flexibility. Output current capacity is marginally higher at 220mA versus 200mA.
• Core Functionality: Both devices feature synchronous rectification and identical operating temperature ranges, maintaining thermal performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can the TLV61220DBVR directly replace the MP3115DT-LF-P on existing PCBs?

A: Yes, direct PCB replacement is possible due to identical SOT-23-6 package pinouts and surface mount compatibility. However, circuit design parameters such as feedback resistor networks and output capacitor values may require adjustment to accommodate the different output voltage ranges.

Q: What are the key differences in electrical specifications?

A: The primary differences are input and output voltage ranges. The TLV61220DBVR accepts input voltages up to 5.5V (versus 2.5V maximum for the MP3115DT-LF-P) and supports output voltages from 1.8V to 5.5V (versus 2.5V to 4V for the MP3115DT-LF-P). Output current capacity is comparable at 220mA versus 200mA.

Q: Are there any compliance or certification differences?

A: Both parts maintain ROHS3 compliance, identical moisture sensitivity levels (MSL 1), and equivalent REACH and ECCN classifications. No compliance barriers exist for substitution.

Q: Why is the MP3115DT-LF-P marked as Not For New Designs?

A: This designation indicates the part has been superseded in the manufacturer's product portfolio. New designs should utilize the TLV61220DBVR or equivalent active-status alternatives to ensure long-term supply chain availability and manufacturer support.

Q: Does switching frequency affect substitution compatibility?

A: The MP3115DT-LF-P operates at 1.3MHz switching frequency. The TLV61220DBVR does not specify switching frequency in the provided parameters. Circuit design must account for potential frequency differences in EMI filtering and component selection, though both devices employ boost topology with synchronous rectification.