MP3115DT-LF-Z Equivalent & Substitute Parts

Part Overview

The MP3115DT-LF-Z is a boost switching regulator IC manufactured by Monolithic Power Systems Inc., designed for positive adjustable output applications. This device operates as a step-up converter with a single adjustable output, capable of delivering 200mA at switching frequencies of 1.3MHz. The part is classified as "Not For New Designs," making identification of suitable alternatives essential for ongoing production and new development initiatives. The device is housed in a SOT-23-6 surface mount package and includes a synchronous rectifier for improved efficiency.

Substiute Parts

MP3115DT-LF-Z

Monolithic Power Systems Inc.In Stock: 1112MP3115DT-LF-Z Datasheet

Current PartRFQ

TLV61220DBVR

Texas InstrumentsIn Stock: 65189TLV61220DBVR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP3115DT-LF-Z is determined by the following critical parameters:

• Topology & Function: Boost switching regulator with step-up conversion capability
• Output Configuration: Positive adjustable output
• Package: SOT-23-6 surface mount (mechanical compatibility)
• Output Current Capability: Minimum 200mA to meet or exceed original specifications
• Synchronous Rectifier: Present in design
• Operating Temperature Range: -40°C to 85°C
• Compliance: ROHS3 compliant, REACH unaffected

The TLV61220DBVR from Texas Instruments qualifies as a substitute based on matching topology, output configuration, package type, and compliance requirements. The substitute part exceeds the original output current specification (220mA vs. 200mA) and provides an expanded input voltage range, making it suitable for applications requiring the MP3115DT-LF-Z.

Parameter Comparison

Engineering Selection Recommendations

The TLV61220DBVR is the qualified substitute for the MP3115DT-LF-Z based on the following criteria:

• Topology Match: Both devices are boost switching regulators with identical step-up function and positive adjustable output configuration
• Package Compatibility: Both use SOT-23-6 surface mount packaging, ensuring mechanical and electrical pin compatibility
• Current Capability: The TLV61220DBVR output current of 220mA exceeds the original 200mA specification, providing margin for application requirements
• Compliance Alignment: Both parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements
• Active Product Status: The TLV61220DBVR maintains active product status, ensuring long-term availability and support compared to the original part's "Not For New Designs" classification
• Temperature Range: Identical operating temperature specifications (-40°C to 85°C) ensure thermal compatibility

Frequently Asked Questions (FAQ)

Q: Can the TLV61220DBVR directly replace the MP3115DT-LF-Z without circuit modifications?

A: The TLV61220DBVR is pin-compatible in the SOT-23-6 package and functionally equivalent as a boost regulator. However, circuit validation is necessary to confirm that the expanded input voltage range (0.7V to 5.5V vs. 0.5V to 2.5V) and output voltage range (1.8V to 5.5V vs. 2.5V to 4V) align with your specific application requirements.

Q: What is the primary reason for substituting the MP3115DT-LF-Z?

A: The MP3115DT-LF-Z is classified as "Not For New Designs," indicating that Monolithic Power Systems Inc. is discontinuing support for this part. The TLV61220DBVR is an active product from Texas Instruments, ensuring continued availability and technical support.

Q: Are there differences in switching frequency between these parts?

A: The MP3115DT-LF-Z operates at 1.3MHz switching frequency. The TLV61220DBVR switching frequency is not specified in the provided data. Application-specific EMI and efficiency considerations should be evaluated based on your circuit design.

Q: Do both parts include synchronous rectification?

A: Yes, both the MP3115DT-LF-Z and TLV61220DBVR include synchronous rectifiers, providing equivalent efficiency characteristics in boost conversion applications.

Q: What is the minimum input voltage difference between these parts?

A: The MP3115DT-LF-Z operates from 0.5V minimum input, while the TLV61220DBVR requires 0.7V minimum input. Applications operating below 0.7V input voltage require the original MP3115DT-LF-Z or alternative solutions.